diff --git a/ast/benches/ast.rs b/ast/benches/ast.rs
index 772aec33ba..5d4cc3f436 100644
--- a/ast/benches/ast.rs
+++ b/ast/benches/ast.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_ast::{errors::ParserError, files::File, LeoAst};
 
 use criterion::{black_box, criterion_group, criterion_main, Criterion};
diff --git a/ast/src/access/access.rs b/ast/src/access/access.rs
index 44741af5c2..ac3e26bb17 100644
--- a/ast/src/access/access.rs
+++ b/ast/src/access/access.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{access::*, ast::Rule};
 
 use pest_ast::FromPest;
diff --git a/ast/src/access/array_access.rs b/ast/src/access/array_access.rs
index 87553d6a71..5e4096b6e5 100644
--- a/ast/src/access/array_access.rs
+++ b/ast/src/access/array_access.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::RangeOrExpression, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/access/assignee_access.rs b/ast/src/access/assignee_access.rs
index a68123783c..ad66ee3539 100644
--- a/ast/src/access/assignee_access.rs
+++ b/ast/src/access/assignee_access.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     access::{ArrayAccess, MemberAccess, TupleAccess},
     ast::Rule,
diff --git a/ast/src/access/call_access.rs b/ast/src/access/call_access.rs
index 4690c94d13..0b26c5c6f3 100644
--- a/ast/src/access/call_access.rs
+++ b/ast/src/access/call_access.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, expressions::TupleExpression, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/access/member_access.rs b/ast/src/access/member_access.rs
index 83cd90d767..721ab473c6 100644
--- a/ast/src/access/member_access.rs
+++ b/ast/src/access/member_access.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::Identifier, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/access/mod.rs b/ast/src/access/mod.rs
index cdb435a4f3..8d3e86d7d2 100644
--- a/ast/src/access/mod.rs
+++ b/ast/src/access/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod access;
 pub use access::*;
 
diff --git a/ast/src/access/static_member_access.rs b/ast/src/access/static_member_access.rs
index 63c1712bf0..560f9143f2 100644
--- a/ast/src/access/static_member_access.rs
+++ b/ast/src/access/static_member_access.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::Identifier, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/access/tuple_access.rs b/ast/src/access/tuple_access.rs
index 428e0c09fc..0e96ac0870 100644
--- a/ast/src/access/tuple_access.rs
+++ b/ast/src/access/tuple_access.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, values::PositiveNumber, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/annotations/annotation_arguments.rs b/ast/src/annotations/annotation_arguments.rs
index b25859a50b..eb56ed4aaf 100644
--- a/ast/src/annotations/annotation_arguments.rs
+++ b/ast/src/annotations/annotation_arguments.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::{span_into_string, Rule},
     SpanDef,
diff --git a/ast/src/annotations/annotation_name.rs b/ast/src/annotations/annotation_name.rs
index e5260cda85..5ceb953ec2 100644
--- a/ast/src/annotations/annotation_name.rs
+++ b/ast/src/annotations/annotation_name.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/annotations/annotation_symbol.rs b/ast/src/annotations/annotation_symbol.rs
index b5e2b10bf5..d11c5965b4 100644
--- a/ast/src/annotations/annotation_symbol.rs
+++ b/ast/src/annotations/annotation_symbol.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/annotations/annotations.rs b/ast/src/annotations/annotations.rs
index 69b01558dd..7abf081658 100644
--- a/ast/src/annotations/annotations.rs
+++ b/ast/src/annotations/annotations.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     annotations::{AnnotationArguments, AnnotationName, AnnotationSymbol},
     ast::Rule,
diff --git a/ast/src/annotations/mod.rs b/ast/src/annotations/mod.rs
index 787b15ef19..0303b71e48 100644
--- a/ast/src/annotations/mod.rs
+++ b/ast/src/annotations/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod annotations;
 pub use annotations::*;
 
diff --git a/ast/src/ast.rs b/ast/src/ast.rs
index fd92b850cc..7906332c4d 100644
--- a/ast/src/ast.rs
+++ b/ast/src/ast.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Abstract syntax tree (ast) representation from leo.pest.
 use crate::{
     common::Identifier,
diff --git a/ast/src/circuits/circuit.rs b/ast/src/circuits/circuit.rs
index 011cc7066b..26bc545e00 100644
--- a/ast/src/circuits/circuit.rs
+++ b/ast/src/circuits/circuit.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, circuits::CircuitMember, common::Identifier, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/circuits/circuit_field.rs b/ast/src/circuits/circuit_field.rs
index 270d7b7308..d141ae718f 100644
--- a/ast/src/circuits/circuit_field.rs
+++ b/ast/src/circuits/circuit_field.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::Identifier, expressions::Expression, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/circuits/circuit_field_definition.rs b/ast/src/circuits/circuit_field_definition.rs
index 331ff3599a..a919786a4f 100644
--- a/ast/src/circuits/circuit_field_definition.rs
+++ b/ast/src/circuits/circuit_field_definition.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::Identifier, types::Type, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/circuits/circuit_function.rs b/ast/src/circuits/circuit_function.rs
index 5a10a8c818..3fdeac1d02 100644
--- a/ast/src/circuits/circuit_function.rs
+++ b/ast/src/circuits/circuit_function.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::Static, functions::Function, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/circuits/circuit_member.rs b/ast/src/circuits/circuit_member.rs
index 294d619659..37c33f9689 100644
--- a/ast/src/circuits/circuit_member.rs
+++ b/ast/src/circuits/circuit_member.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     circuits::{CircuitFieldDefinition, CircuitFunction},
diff --git a/ast/src/circuits/mod.rs b/ast/src/circuits/mod.rs
index 662062be94..dcb5aae1e8 100644
--- a/ast/src/circuits/mod.rs
+++ b/ast/src/circuits/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod circuit;
 pub use circuit::*;
 
diff --git a/ast/src/common/assignee.rs b/ast/src/common/assignee.rs
index e72b527193..4019f9d6cd 100644
--- a/ast/src/common/assignee.rs
+++ b/ast/src/common/assignee.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{access::AssigneeAccess, ast::Rule, common::Identifier, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/common/declare.rs b/ast/src/common/declare.rs
index e4c06c2097..dabc1bbfdb 100644
--- a/ast/src/common/declare.rs
+++ b/ast/src/common/declare.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/common/eoi.rs b/ast/src/common/eoi.rs
index e167d29937..610ba45329 100644
--- a/ast/src/common/eoi.rs
+++ b/ast/src/common/eoi.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/common/identifier.rs b/ast/src/common/identifier.rs
index c6adf81e56..e349a3b259 100644
--- a/ast/src/common/identifier.rs
+++ b/ast/src/common/identifier.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::{span_into_string, Rule},
     SpanDef,
diff --git a/ast/src/common/line_end.rs b/ast/src/common/line_end.rs
index fec2a1432e..82b862a71f 100644
--- a/ast/src/common/line_end.rs
+++ b/ast/src/common/line_end.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/common/mod.rs b/ast/src/common/mod.rs
index f0fa036f0e..071133d57c 100644
--- a/ast/src/common/mod.rs
+++ b/ast/src/common/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod assignee;
 pub use assignee::*;
 
diff --git a/ast/src/common/mutable.rs b/ast/src/common/mutable.rs
index 3d8b9ebbf5..e627286ce5 100644
--- a/ast/src/common/mutable.rs
+++ b/ast/src/common/mutable.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/common/range.rs b/ast/src/common/range.rs
index 8aabb966ce..602f163964 100644
--- a/ast/src/common/range.rs
+++ b/ast/src/common/range.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, expressions::Expression, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/common/range_or_expression.rs b/ast/src/common/range_or_expression.rs
index e0faf4adb5..a20934a4ae 100644
--- a/ast/src/common/range_or_expression.rs
+++ b/ast/src/common/range_or_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::Range, expressions::Expression};
 
 use pest_ast::FromPest;
diff --git a/ast/src/common/spread.rs b/ast/src/common/spread.rs
index e73b0010da..f801063345 100644
--- a/ast/src/common/spread.rs
+++ b/ast/src/common/spread.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, expressions::Expression, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/common/spread_or_expression.rs b/ast/src/common/spread_or_expression.rs
index 2065b6fd53..3dfcedb7d3 100644
--- a/ast/src/common/spread_or_expression.rs
+++ b/ast/src/common/spread_or_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::Spread, expressions::Expression};
 
 use pest_ast::FromPest;
diff --git a/ast/src/common/static_.rs b/ast/src/common/static_.rs
index 070a18664b..1f035515ce 100644
--- a/ast/src/common/static_.rs
+++ b/ast/src/common/static_.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/common/variable_name.rs b/ast/src/common/variable_name.rs
index a525b195ae..76197bb0ed 100644
--- a/ast/src/common/variable_name.rs
+++ b/ast/src/common/variable_name.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     common::{Identifier, Mutable},
diff --git a/ast/src/common/variables.rs b/ast/src/common/variables.rs
index 8e23ac2a48..2e8f3ea084 100644
--- a/ast/src/common/variables.rs
+++ b/ast/src/common/variables.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::VariableName, types::Type, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/definitions/annotated_definition.rs b/ast/src/definitions/annotated_definition.rs
index 8c3b15f6d8..20177facb9 100644
--- a/ast/src/definitions/annotated_definition.rs
+++ b/ast/src/definitions/annotated_definition.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{annotations::Annotation, ast::Rule, definitions::Definition, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/definitions/definition.rs b/ast/src/definitions/definition.rs
index c2858f4535..ee913f76d1 100644
--- a/ast/src/definitions/definition.rs
+++ b/ast/src/definitions/definition.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     circuits::Circuit,
diff --git a/ast/src/definitions/mod.rs b/ast/src/definitions/mod.rs
index 83cde009a3..923f7c5da6 100644
--- a/ast/src/definitions/mod.rs
+++ b/ast/src/definitions/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod annotated_definition;
 pub use annotated_definition::*;
 
diff --git a/ast/src/errors/mod.rs b/ast/src/errors/mod.rs
index 9d9164fa35..c60030f31f 100644
--- a/ast/src/errors/mod.rs
+++ b/ast/src/errors/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod parser;
 pub use parser::*;
 
diff --git a/ast/src/errors/parser.rs b/ast/src/errors/parser.rs
index df679dc62b..641b86b84f 100644
--- a/ast/src/errors/parser.rs
+++ b/ast/src/errors/parser.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, errors::SyntaxError};
 
 use pest::error::Error;
diff --git a/ast/src/errors/syntax.rs b/ast/src/errors/syntax.rs
index 2bce3412d0..9c5a19a30b 100644
--- a/ast/src/errors/syntax.rs
+++ b/ast/src/errors/syntax.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest::error::Error;
diff --git a/ast/src/expressions/array_initializer_expression.rs b/ast/src/expressions/array_initializer_expression.rs
index 53308977a3..dd701a720b 100644
--- a/ast/src/expressions/array_initializer_expression.rs
+++ b/ast/src/expressions/array_initializer_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::SpreadOrExpression, values::PositiveNumber, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/expressions/array_inline_expression.rs b/ast/src/expressions/array_inline_expression.rs
index c43a1b0a5c..e7580c1f6d 100644
--- a/ast/src/expressions/array_inline_expression.rs
+++ b/ast/src/expressions/array_inline_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::SpreadOrExpression, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/expressions/binary_expression.rs b/ast/src/expressions/binary_expression.rs
index f04efb6c60..32861632b3 100644
--- a/ast/src/expressions/binary_expression.rs
+++ b/ast/src/expressions/binary_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{expressions::Expression, operations::BinaryOperation, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/expressions/circuit_inline_expression.rs b/ast/src/expressions/circuit_inline_expression.rs
index 7e0fb83de5..d829f66fd1 100644
--- a/ast/src/expressions/circuit_inline_expression.rs
+++ b/ast/src/expressions/circuit_inline_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, circuits::CircuitField, common::Identifier, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/expressions/expression.rs b/ast/src/expressions/expression.rs
index 307ac9de4d..47cb5d92e0 100644
--- a/ast/src/expressions/expression.rs
+++ b/ast/src/expressions/expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{common::Identifier, expressions::*, operations::BinaryOperation, values::Value};
 
 use pest::Span;
diff --git a/ast/src/expressions/mod.rs b/ast/src/expressions/mod.rs
index d39f8b9d83..f4f5fd0e39 100644
--- a/ast/src/expressions/mod.rs
+++ b/ast/src/expressions/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod array_initializer_expression;
 pub use array_initializer_expression::*;
 
diff --git a/ast/src/expressions/postfix_expression.rs b/ast/src/expressions/postfix_expression.rs
index d578fa0350..7dd7e2b034 100644
--- a/ast/src/expressions/postfix_expression.rs
+++ b/ast/src/expressions/postfix_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{access::Access, ast::Rule, common::Identifier, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/expressions/ternary_expression.rs b/ast/src/expressions/ternary_expression.rs
index 63ff4e62eb..395aaae7be 100644
--- a/ast/src/expressions/ternary_expression.rs
+++ b/ast/src/expressions/ternary_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, expressions::Expression, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/expressions/tuple_expression.rs b/ast/src/expressions/tuple_expression.rs
index c528f35b9b..eca27a69a6 100644
--- a/ast/src/expressions/tuple_expression.rs
+++ b/ast/src/expressions/tuple_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, expressions::Expression, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/expressions/unary_expression.rs b/ast/src/expressions/unary_expression.rs
index bc661d4067..2bda397059 100644
--- a/ast/src/expressions/unary_expression.rs
+++ b/ast/src/expressions/unary_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, expressions::Expression, operations::UnaryOperation, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/files/file.rs b/ast/src/files/file.rs
index 58dc4d3c51..ca4cd79652 100644
--- a/ast/src/files/file.rs
+++ b/ast/src/files/file.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::EOI, definitions::Definition, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/files/mod.rs b/ast/src/files/mod.rs
index de03a628a4..d61114399a 100644
--- a/ast/src/files/mod.rs
+++ b/ast/src/files/mod.rs
@@ -1,2 +1,18 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod file;
 pub use file::*;
diff --git a/ast/src/functions/function.rs b/ast/src/functions/function.rs
index cdaa9872d6..4129422ed0 100644
--- a/ast/src/functions/function.rs
+++ b/ast/src/functions/function.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::Identifier, functions::input::Input, statements::Statement, types::Type, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/functions/input/function_input.rs b/ast/src/functions/input/function_input.rs
index 127bd13502..05a8da3435 100644
--- a/ast/src/functions/input/function_input.rs
+++ b/ast/src/functions/input/function_input.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     common::{Identifier, Mutable},
diff --git a/ast/src/functions/input/input.rs b/ast/src/functions/input/input.rs
index 679f94239c..d3cddee215 100644
--- a/ast/src/functions/input/input.rs
+++ b/ast/src/functions/input/input.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     functions::{FunctionInput, InputKeyword},
diff --git a/ast/src/functions/input/input_keyword.rs b/ast/src/functions/input/input_keyword.rs
index 2e9bc8902d..e70e43f20d 100644
--- a/ast/src/functions/input/input_keyword.rs
+++ b/ast/src/functions/input/input_keyword.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::{span_into_string, Rule},
     SpanDef,
diff --git a/ast/src/functions/input/mod.rs b/ast/src/functions/input/mod.rs
index ab87f809fa..8e0a1776a4 100644
--- a/ast/src/functions/input/mod.rs
+++ b/ast/src/functions/input/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod function_input;
 pub use function_input::*;
 
diff --git a/ast/src/functions/mod.rs b/ast/src/functions/mod.rs
index 376bb34270..bb15f47eb9 100644
--- a/ast/src/functions/mod.rs
+++ b/ast/src/functions/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod function;
 pub use function::*;
 
diff --git a/ast/src/functions/test_function.rs b/ast/src/functions/test_function.rs
index d3f89f9df8..54222deafd 100644
--- a/ast/src/functions/test_function.rs
+++ b/ast/src/functions/test_function.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, functions::Function, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/imports/import.rs b/ast/src/imports/import.rs
index 74a8255e5e..5a8ff43b8a 100644
--- a/ast/src/imports/import.rs
+++ b/ast/src/imports/import.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::LineEnd, imports::Package, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/imports/import_symbol.rs b/ast/src/imports/import_symbol.rs
index 61f0acbc1a..619a9212aa 100644
--- a/ast/src/imports/import_symbol.rs
+++ b/ast/src/imports/import_symbol.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::Identifier, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/imports/mod.rs b/ast/src/imports/mod.rs
index 696656fb9f..4a1343664a 100644
--- a/ast/src/imports/mod.rs
+++ b/ast/src/imports/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod import;
 pub use import::*;
 
diff --git a/ast/src/imports/package.rs b/ast/src/imports/package.rs
index f8b34c4362..75a3935913 100644
--- a/ast/src/imports/package.rs
+++ b/ast/src/imports/package.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     imports::{PackageAccess, PackageName},
diff --git a/ast/src/imports/package_access.rs b/ast/src/imports/package_access.rs
index 612aa23683..0e04906152 100644
--- a/ast/src/imports/package_access.rs
+++ b/ast/src/imports/package_access.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     imports::{ImportSymbol, Package, Star},
diff --git a/ast/src/imports/package_name.rs b/ast/src/imports/package_name.rs
index 610dfb5bce..a4102ab2b2 100644
--- a/ast/src/imports/package_name.rs
+++ b/ast/src/imports/package_name.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::{span_into_string, Rule},
     SpanDef,
diff --git a/ast/src/imports/star.rs b/ast/src/imports/star.rs
index 962aabf7eb..bb50b3e864 100644
--- a/ast/src/imports/star.rs
+++ b/ast/src/imports/star.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/lib.rs b/ast/src/lib.rs
index 8b11d62b33..22312b1747 100644
--- a/ast/src/lib.rs
+++ b/ast/src/lib.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 extern crate lazy_static;
 #[macro_use]
diff --git a/ast/src/macros/assert_eq.rs b/ast/src/macros/assert_eq.rs
index 680710d1af..b54097bf50 100644
--- a/ast/src/macros/assert_eq.rs
+++ b/ast/src/macros/assert_eq.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::LineEnd, expressions::Expression, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/macros/debug.rs b/ast/src/macros/debug.rs
index 2bfcf0e2aa..733e5c93b2 100644
--- a/ast/src/macros/debug.rs
+++ b/ast/src/macros/debug.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/macros/error.rs b/ast/src/macros/error.rs
index b43205cba3..24b2be60ad 100644
--- a/ast/src/macros/error.rs
+++ b/ast/src/macros/error.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/macros/formatted_container.rs b/ast/src/macros/formatted_container.rs
index dc6565db52..e6234dc723 100644
--- a/ast/src/macros/formatted_container.rs
+++ b/ast/src/macros/formatted_container.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/macros/formatted_macro.rs b/ast/src/macros/formatted_macro.rs
index 928aa49d4c..39d169e185 100644
--- a/ast/src/macros/formatted_macro.rs
+++ b/ast/src/macros/formatted_macro.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     common::LineEnd,
diff --git a/ast/src/macros/formatted_parameter.rs b/ast/src/macros/formatted_parameter.rs
index dcdb3ba055..c8b8c3cbe4 100644
--- a/ast/src/macros/formatted_parameter.rs
+++ b/ast/src/macros/formatted_parameter.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, expressions::Expression, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/macros/formatted_string.rs b/ast/src/macros/formatted_string.rs
index cfa5fddbcc..2a0f32147c 100644
--- a/ast/src/macros/formatted_string.rs
+++ b/ast/src/macros/formatted_string.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::{span_into_string, Rule},
     macros::{FormattedContainer, FormattedParameter},
diff --git a/ast/src/macros/macro_name.rs b/ast/src/macros/macro_name.rs
index 320f42b134..3f76e89738 100644
--- a/ast/src/macros/macro_name.rs
+++ b/ast/src/macros/macro_name.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     macros::{Debug, Error, Print},
diff --git a/ast/src/macros/macro_symbol.rs b/ast/src/macros/macro_symbol.rs
index 517bf711a2..2cfecc2cd0 100644
--- a/ast/src/macros/macro_symbol.rs
+++ b/ast/src/macros/macro_symbol.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/macros/mod.rs b/ast/src/macros/mod.rs
index 8d85c1cd75..44d0353ea6 100644
--- a/ast/src/macros/mod.rs
+++ b/ast/src/macros/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod assert_eq;
 pub use assert_eq::*;
 
diff --git a/ast/src/macros/print.rs b/ast/src/macros/print.rs
index f98b3da6e8..2d67239041 100644
--- a/ast/src/macros/print.rs
+++ b/ast/src/macros/print.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/main.rs b/ast/src/main.rs
index 8a672ef403..df420eac74 100644
--- a/ast/src/main.rs
+++ b/ast/src/main.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_ast::{LeoAst, ParserError};
 use std::{env, fs, path::Path};
 
diff --git a/ast/src/operations/assign_operation.rs b/ast/src/operations/assign_operation.rs
index da23acc91d..33c5a06ee7 100644
--- a/ast/src/operations/assign_operation.rs
+++ b/ast/src/operations/assign_operation.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/operations/binary_operation.rs b/ast/src/operations/binary_operation.rs
index 448e627dfe..31d56ffba7 100644
--- a/ast/src/operations/binary_operation.rs
+++ b/ast/src/operations/binary_operation.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/operations/mod.rs b/ast/src/operations/mod.rs
index 72c659cc03..b58e3bd651 100644
--- a/ast/src/operations/mod.rs
+++ b/ast/src/operations/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod assign_operation;
 pub use assign_operation::*;
 
diff --git a/ast/src/operations/unary_operation.rs b/ast/src/operations/unary_operation.rs
index fa8c37baa9..2603795ecb 100644
--- a/ast/src/operations/unary_operation.rs
+++ b/ast/src/operations/unary_operation.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/span.rs b/ast/src/span.rs
index 28c35f9247..daa999d4cf 100644
--- a/ast/src/span.rs
+++ b/ast/src/span.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use pest::Span;
 use serde::Serialize;
 
diff --git a/ast/src/statements/assign_statement.rs b/ast/src/statements/assign_statement.rs
index 1196d77c89..2a7eb29b8c 100644
--- a/ast/src/statements/assign_statement.rs
+++ b/ast/src/statements/assign_statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     common::{Assignee, LineEnd},
diff --git a/ast/src/statements/conditional_nested_or_end_statement.rs b/ast/src/statements/conditional_nested_or_end_statement.rs
index 41121f3ff9..120fc2ba7e 100644
--- a/ast/src/statements/conditional_nested_or_end_statement.rs
+++ b/ast/src/statements/conditional_nested_or_end_statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     statements::{ConditionalStatement, Statement},
diff --git a/ast/src/statements/conditional_statement.rs b/ast/src/statements/conditional_statement.rs
index b6d4c9a157..e11cab8a1c 100644
--- a/ast/src/statements/conditional_statement.rs
+++ b/ast/src/statements/conditional_statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     expressions::Expression,
diff --git a/ast/src/statements/definition_statement.rs b/ast/src/statements/definition_statement.rs
index 5f07484a30..6c78a6ffe3 100644
--- a/ast/src/statements/definition_statement.rs
+++ b/ast/src/statements/definition_statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     common::{Declare, LineEnd, Variables},
diff --git a/ast/src/statements/expression_statement.rs b/ast/src/statements/expression_statement.rs
index 2ec81401bc..e03639bb52 100644
--- a/ast/src/statements/expression_statement.rs
+++ b/ast/src/statements/expression_statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::LineEnd, expressions::Expression, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/statements/for_statement.rs b/ast/src/statements/for_statement.rs
index 49985791c5..a31ed51f0f 100644
--- a/ast/src/statements/for_statement.rs
+++ b/ast/src/statements/for_statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::Identifier, expressions::Expression, statements::Statement, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/statements/macro_statement.rs b/ast/src/statements/macro_statement.rs
index d75a87efd6..7a8328edaa 100644
--- a/ast/src/statements/macro_statement.rs
+++ b/ast/src/statements/macro_statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     macros::{AssertEq, FormattedMacro},
diff --git a/ast/src/statements/mod.rs b/ast/src/statements/mod.rs
index 50202579e5..008104c670 100644
--- a/ast/src/statements/mod.rs
+++ b/ast/src/statements/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod macro_statement;
 pub use macro_statement::*;
 
diff --git a/ast/src/statements/return_statement.rs b/ast/src/statements/return_statement.rs
index aaf8ecee63..71c3800f52 100644
--- a/ast/src/statements/return_statement.rs
+++ b/ast/src/statements/return_statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, expressions::Expression, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/statements/statement.rs b/ast/src/statements/statement.rs
index d12226e5a9..32c2c5ade8 100644
--- a/ast/src/statements/statement.rs
+++ b/ast/src/statements/statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, statements::*};
 
 use pest_ast::FromPest;
diff --git a/ast/src/types/address_type.rs b/ast/src/types/address_type.rs
index 9760d7763c..7918496c79 100644
--- a/ast/src/types/address_type.rs
+++ b/ast/src/types/address_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/types/array_type.rs b/ast/src/types/array_type.rs
index 2795020e7c..fd1176ccfd 100644
--- a/ast/src/types/array_type.rs
+++ b/ast/src/types/array_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::DataType, values::PositiveNumber, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/types/boolean_type.rs b/ast/src/types/boolean_type.rs
index 2639cf2b48..2ebc567f6f 100644
--- a/ast/src/types/boolean_type.rs
+++ b/ast/src/types/boolean_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/types/circuit_type.rs b/ast/src/types/circuit_type.rs
index 3326b7d39a..c60bee604d 100644
--- a/ast/src/types/circuit_type.rs
+++ b/ast/src/types/circuit_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::Identifier, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/types/data_type.rs b/ast/src/types/data_type.rs
index 65e90e5307..e42f40c14c 100644
--- a/ast/src/types/data_type.rs
+++ b/ast/src/types/data_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     types::{AddressType, BooleanType, FieldType, GroupType, IntegerType},
diff --git a/ast/src/types/field_type.rs b/ast/src/types/field_type.rs
index 5afc41ff4c..2c8aa13061 100644
--- a/ast/src/types/field_type.rs
+++ b/ast/src/types/field_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/types/group_type.rs b/ast/src/types/group_type.rs
index c8f8397b69..9529a91058 100644
--- a/ast/src/types/group_type.rs
+++ b/ast/src/types/group_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/types/integer_type.rs b/ast/src/types/integer_type.rs
index ae915e6c94..e75785ea4e 100644
--- a/ast/src/types/integer_type.rs
+++ b/ast/src/types/integer_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     types::{SignedIntegerType, UnsignedIntegerType},
diff --git a/ast/src/types/mod.rs b/ast/src/types/mod.rs
index 3a463e4c87..3011db3449 100644
--- a/ast/src/types/mod.rs
+++ b/ast/src/types/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod address_type;
 pub use address_type::*;
 
diff --git a/ast/src/types/self_type.rs b/ast/src/types/self_type.rs
index 53fc667c6a..beca5d7413 100644
--- a/ast/src/types/self_type.rs
+++ b/ast/src/types/self_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/types/signed_integer_type.rs b/ast/src/types/signed_integer_type.rs
index 16c516c0bb..91cde4e4b1 100644
--- a/ast/src/types/signed_integer_type.rs
+++ b/ast/src/types/signed_integer_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/types/tuple_type.rs b/ast/src/types/tuple_type.rs
index d08a7ea6c1..9547ee3fff 100644
--- a/ast/src/types/tuple_type.rs
+++ b/ast/src/types/tuple_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::Type, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/types/type_.rs b/ast/src/types/type_.rs
index f401633315..02158a3499 100644
--- a/ast/src/types/type_.rs
+++ b/ast/src/types/type_.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::*};
 
 use pest_ast::FromPest;
diff --git a/ast/src/types/unsigned_integer_type.rs b/ast/src/types/unsigned_integer_type.rs
index 5f2fce1108..764d5030b2 100644
--- a/ast/src/types/unsigned_integer_type.rs
+++ b/ast/src/types/unsigned_integer_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/ast/src/values/address.rs b/ast/src/values/address.rs
index 34549f46f4..5ea7a60fd9 100644
--- a/ast/src/values/address.rs
+++ b/ast/src/values/address.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::{span_into_string, Rule},
     SpanDef,
diff --git a/ast/src/values/address_value.rs b/ast/src/values/address_value.rs
index 7e0dd10329..94c46f9ea3 100644
--- a/ast/src/values/address_value.rs
+++ b/ast/src/values/address_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::AddressType, values::address::Address, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/values/boolean_value.rs b/ast/src/values/boolean_value.rs
index 0e65e6ebd2..ef06a9da98 100644
--- a/ast/src/values/boolean_value.rs
+++ b/ast/src/values/boolean_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::{span_into_string, Rule},
     SpanDef,
diff --git a/ast/src/values/field_value.rs b/ast/src/values/field_value.rs
index b67d455ddf..d4106cb7f1 100644
--- a/ast/src/values/field_value.rs
+++ b/ast/src/values/field_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::FieldType, values::NumberValue, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/values/group_coordinate.rs b/ast/src/values/group_coordinate.rs
index 01b7fbda55..66ff4bd94e 100644
--- a/ast/src/values/group_coordinate.rs
+++ b/ast/src/values/group_coordinate.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, values::NumberValue, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/values/group_value.rs b/ast/src/values/group_value.rs
index ee9310de90..c35558fe7a 100644
--- a/ast/src/values/group_value.rs
+++ b/ast/src/values/group_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::GroupType, values::GroupCoordinate, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/values/integer_value.rs b/ast/src/values/integer_value.rs
index f71c4ec4b2..6605c83724 100644
--- a/ast/src/values/integer_value.rs
+++ b/ast/src/values/integer_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     values::{SignedIntegerValue, UnsignedIntegerValue},
diff --git a/ast/src/values/mod.rs b/ast/src/values/mod.rs
index e1ca123f27..d1e2114977 100644
--- a/ast/src/values/mod.rs
+++ b/ast/src/values/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod address;
 pub use address_value::*;
 
diff --git a/ast/src/values/negative_number.rs b/ast/src/values/negative_number.rs
index 7f1951d221..7287967380 100644
--- a/ast/src/values/negative_number.rs
+++ b/ast/src/values/negative_number.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::{span_into_string, Rule},
     span::SpanDef,
diff --git a/ast/src/values/number_value.rs b/ast/src/values/number_value.rs
index 9517e28919..02c5171b68 100644
--- a/ast/src/values/number_value.rs
+++ b/ast/src/values/number_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     values::{NegativeNumber, PositiveNumber},
diff --git a/ast/src/values/positive_number.rs b/ast/src/values/positive_number.rs
index 0111159eb5..1971237fe6 100644
--- a/ast/src/values/positive_number.rs
+++ b/ast/src/values/positive_number.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::{span_into_string, Rule},
     span::SpanDef,
diff --git a/ast/src/values/signed_integer_value.rs b/ast/src/values/signed_integer_value.rs
index 85b5e13cdb..eadc7824ec 100644
--- a/ast/src/values/signed_integer_value.rs
+++ b/ast/src/values/signed_integer_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::SignedIntegerType, values::NumberValue, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/values/unsigned_integer_value.rs b/ast/src/values/unsigned_integer_value.rs
index 4e117c09fe..4da4fdb2da 100644
--- a/ast/src/values/unsigned_integer_value.rs
+++ b/ast/src/values/unsigned_integer_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::UnsignedIntegerType, values::PositiveNumber, SpanDef};
 
 use pest::Span;
diff --git a/ast/src/values/value.rs b/ast/src/values/value.rs
index 18e2c42b5c..11cbd0fd2a 100644
--- a/ast/src/values/value.rs
+++ b/ast/src/values/value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     values::{AddressValue, BooleanValue, FieldValue, GroupValue, IntegerValue, NumberValue},
diff --git a/ast/tests/mod.rs b/ast/tests/mod.rs
index 1118e0b570..6698b5585a 100644
--- a/ast/tests/mod.rs
+++ b/ast/tests/mod.rs
@@ -1 +1,17 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 mod serialization;
diff --git a/ast/tests/serialization/json.rs b/ast/tests/serialization/json.rs
index f4844121e4..1fec73e112 100644
--- a/ast/tests/serialization/json.rs
+++ b/ast/tests/serialization/json.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_ast::LeoAst;
 
 use std::path::PathBuf;
diff --git a/ast/tests/serialization/mod.rs b/ast/tests/serialization/mod.rs
index cff0e9089e..19cc88a3bf 100644
--- a/ast/tests/serialization/mod.rs
+++ b/ast/tests/serialization/mod.rs
@@ -1 +1,17 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 mod json;
diff --git a/compiler/src/compiler.rs b/compiler/src/compiler.rs
index 01e68e8aff..454103676a 100644
--- a/compiler/src/compiler.rs
+++ b/compiler/src/compiler.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Compiles a Leo program from a file path.
 
 use crate::{
diff --git a/compiler/src/constraints/constraints.rs b/compiler/src/constraints/constraints.rs
index 5880bdadc7..d40933a51c 100644
--- a/compiler/src/constraints/constraints.rs
+++ b/compiler/src/constraints/constraints.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Generates R1CS constraints for a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/constraints/mod.rs b/compiler/src/constraints/mod.rs
index e9fdd65238..2146eae5e9 100644
--- a/compiler/src/constraints/mod.rs
+++ b/compiler/src/constraints/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Module containing methods to enforce constraints in an Leo program
 
 pub mod constraints;
diff --git a/compiler/src/definition/definition.rs b/compiler/src/definition/definition.rs
index 8c6cdd5330..0b76ec2b3e 100644
--- a/compiler/src/definition/definition.rs
+++ b/compiler/src/definition/definition.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Stores all defined names in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/definition/definitions.rs b/compiler/src/definition/definitions.rs
index 9925340ec4..6ff9778977 100644
--- a/compiler/src/definition/definitions.rs
+++ b/compiler/src/definition/definitions.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Stores all defined names in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/definition/mod.rs b/compiler/src/definition/mod.rs
index b2ddecaa3a..c62d778a71 100644
--- a/compiler/src/definition/mod.rs
+++ b/compiler/src/definition/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod definition;
 pub use self::definition::*;
 
diff --git a/compiler/src/errors/compiler.rs b/compiler/src/errors/compiler.rs
index fbb66b9f2f..e51991d6ad 100644
--- a/compiler/src/errors/compiler.rs
+++ b/compiler/src/errors/compiler.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::errors::{FunctionError, ImportError, OutputBytesError, OutputFileError};
 use leo_ast::ParserError;
 use leo_input::InputParserError;
diff --git a/compiler/src/errors/expression.rs b/compiler/src/errors/expression.rs
index b1c5a18641..d388318bd5 100644
--- a/compiler/src/errors/expression.rs
+++ b/compiler/src/errors/expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::errors::{AddressError, BooleanError, FieldError, FunctionError, GroupError, IntegerError, ValueError};
 use leo_typed::{Error as FormattedError, Identifier, Span};
 
diff --git a/compiler/src/errors/function.rs b/compiler/src/errors/function.rs
index a4d26a87cc..f002e4ddd0 100644
--- a/compiler/src/errors/function.rs
+++ b/compiler/src/errors/function.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::errors::{
     AddressError,
     BooleanError,
diff --git a/compiler/src/errors/import.rs b/compiler/src/errors/import.rs
index 0a96438afe..374273114e 100644
--- a/compiler/src/errors/import.rs
+++ b/compiler/src/errors/import.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_ast::ParserError;
 use leo_typed::{Error as FormattedError, Identifier, ImportSymbol, Span};
 
diff --git a/compiler/src/errors/macro_.rs b/compiler/src/errors/macro_.rs
index 83c25fe76e..398a412bc1 100644
--- a/compiler/src/errors/macro_.rs
+++ b/compiler/src/errors/macro_.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::errors::ExpressionError;
 use leo_typed::{Error as FormattedError, Span};
 
diff --git a/compiler/src/errors/mod.rs b/compiler/src/errors/mod.rs
index 96ec87bdf4..480edb31ab 100644
--- a/compiler/src/errors/mod.rs
+++ b/compiler/src/errors/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod compiler;
 pub use self::compiler::*;
 
diff --git a/compiler/src/errors/output_bytes.rs b/compiler/src/errors/output_bytes.rs
index f50621a88f..37400bb236 100644
--- a/compiler/src/errors/output_bytes.rs
+++ b/compiler/src/errors/output_bytes.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_typed::{Error as FormattedError, Span};
 
 use std::path::PathBuf;
diff --git a/compiler/src/errors/output_file.rs b/compiler/src/errors/output_file.rs
index 547e931819..8c4a51dd4d 100644
--- a/compiler/src/errors/output_file.rs
+++ b/compiler/src/errors/output_file.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::{io, path::PathBuf};
 
 #[derive(Debug, Error)]
diff --git a/compiler/src/errors/statement.rs b/compiler/src/errors/statement.rs
index b6e4c3d81e..af7d63d514 100644
--- a/compiler/src/errors/statement.rs
+++ b/compiler/src/errors/statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::errors::{AddressError, BooleanError, ExpressionError, IntegerError, MacroError, ValueError};
 use leo_typed::{Error as FormattedError, Span, Type};
 
diff --git a/compiler/src/errors/value/address.rs b/compiler/src/errors/value/address.rs
index 9f9c131f17..d2239814ca 100644
--- a/compiler/src/errors/value/address.rs
+++ b/compiler/src/errors/value/address.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_typed::{Error as FormattedError, Span};
 
 use snarkos_errors::{gadgets::SynthesisError, objects::account::AccountError};
diff --git a/compiler/src/errors/value/boolean.rs b/compiler/src/errors/value/boolean.rs
index 9b96b586b4..639cfb0743 100644
--- a/compiler/src/errors/value/boolean.rs
+++ b/compiler/src/errors/value/boolean.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_typed::{Error as FormattedError, Span};
 
 use snarkos_errors::gadgets::SynthesisError;
diff --git a/compiler/src/errors/value/field.rs b/compiler/src/errors/value/field.rs
index 84c0a49979..662da36302 100644
--- a/compiler/src/errors/value/field.rs
+++ b/compiler/src/errors/value/field.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_typed::{Error as FormattedError, Span};
 
 use snarkos_errors::gadgets::SynthesisError;
diff --git a/compiler/src/errors/value/group.rs b/compiler/src/errors/value/group.rs
index 59175aabc9..c7b84b5f56 100644
--- a/compiler/src/errors/value/group.rs
+++ b/compiler/src/errors/value/group.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_typed::{Error as FormattedError, Span};
 
 use snarkos_errors::gadgets::SynthesisError;
diff --git a/compiler/src/errors/value/integer.rs b/compiler/src/errors/value/integer.rs
index 9d7f906961..f1ccba5aeb 100644
--- a/compiler/src/errors/value/integer.rs
+++ b/compiler/src/errors/value/integer.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_gadgets::errors::SignedIntegerError;
 use leo_typed::{error::Error as FormattedError, Span};
 
diff --git a/compiler/src/errors/value/mod.rs b/compiler/src/errors/value/mod.rs
index 52b6c802d1..5871cd0494 100644
--- a/compiler/src/errors/value/mod.rs
+++ b/compiler/src/errors/value/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod address;
 pub use self::address::*;
 
diff --git a/compiler/src/errors/value/value.rs b/compiler/src/errors/value/value.rs
index 5c824f40ec..6893c53359 100644
--- a/compiler/src/errors/value/value.rs
+++ b/compiler/src/errors/value/value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::errors::{AddressError, BooleanError, FieldError, GroupError, IntegerError};
 use leo_typed::{Error as FormattedError, Span};
 
diff --git a/compiler/src/expression/arithmetic/add.rs b/compiler/src/expression/arithmetic/add.rs
index e7117101fe..662a235f11 100644
--- a/compiler/src/expression/arithmetic/add.rs
+++ b/compiler/src/expression/arithmetic/add.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces an arithmetic `+` operator in a resolved Leo program.
 
 use crate::{errors::ExpressionError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/arithmetic/div.rs b/compiler/src/expression/arithmetic/div.rs
index 0545f8b229..274b1ff674 100644
--- a/compiler/src/expression/arithmetic/div.rs
+++ b/compiler/src/expression/arithmetic/div.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces an arithmetic `/` operator in a resolved Leo program.
 
 use crate::{errors::ExpressionError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/arithmetic/mod.rs b/compiler/src/expression/arithmetic/mod.rs
index fa81b51c1a..f2805a29f2 100644
--- a/compiler/src/expression/arithmetic/mod.rs
+++ b/compiler/src/expression/arithmetic/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce arithmetic expressions in a compiled Leo program.
 
 pub mod add;
diff --git a/compiler/src/expression/arithmetic/mul.rs b/compiler/src/expression/arithmetic/mul.rs
index f9b58aa5c0..d1f962ccfa 100644
--- a/compiler/src/expression/arithmetic/mul.rs
+++ b/compiler/src/expression/arithmetic/mul.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces an arithmetic `*` operator in a resolved Leo program.
 
 use crate::{errors::ExpressionError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/arithmetic/negate.rs b/compiler/src/expression/arithmetic/negate.rs
index 65809e6bad..1fea24d87a 100644
--- a/compiler/src/expression/arithmetic/negate.rs
+++ b/compiler/src/expression/arithmetic/negate.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a unary negate `-` operator in a resolved Leo program.
 
 use crate::{errors::ExpressionError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/arithmetic/pow.rs b/compiler/src/expression/arithmetic/pow.rs
index 737fa15ffa..b5f7771f05 100644
--- a/compiler/src/expression/arithmetic/pow.rs
+++ b/compiler/src/expression/arithmetic/pow.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces an arithmetic `**` operator in a resolved Leo program.
 
 use crate::{errors::ExpressionError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/arithmetic/sub.rs b/compiler/src/expression/arithmetic/sub.rs
index efd87a6b9e..7f68772a83 100644
--- a/compiler/src/expression/arithmetic/sub.rs
+++ b/compiler/src/expression/arithmetic/sub.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces an arithmetic `-` operator in a resolved Leo program.
 
 use crate::{errors::ExpressionError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/array/access.rs b/compiler/src/expression/array/access.rs
index e0ff5edf92..bf2287f165 100644
--- a/compiler/src/expression/array/access.rs
+++ b/compiler/src/expression/array/access.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces array access in a compiled Leo program.
 
 use crate::{errors::ExpressionError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/array/array.rs b/compiler/src/expression/array/array.rs
index c8044a45e2..07ad995806 100644
--- a/compiler/src/expression/array/array.rs
+++ b/compiler/src/expression/array/array.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces an array expression in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/expression/array/index.rs b/compiler/src/expression/array/index.rs
index 2c4f1074a6..4f7a638cbe 100644
--- a/compiler/src/expression/array/index.rs
+++ b/compiler/src/expression/array/index.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces an array index expression in a compiled Leo program.
 
 use crate::{errors::ExpressionError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/array/mod.rs b/compiler/src/expression/array/mod.rs
index 155fb848a8..810c212678 100644
--- a/compiler/src/expression/array/mod.rs
+++ b/compiler/src/expression/array/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce array expressions in a compiled Leo program.
 
 pub mod array;
diff --git a/compiler/src/expression/binary/binary.rs b/compiler/src/expression/binary/binary.rs
index 06d6c8c124..b3109a3d94 100644
--- a/compiler/src/expression/binary/binary.rs
+++ b/compiler/src/expression/binary/binary.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a binary expression in a compiled Leo program.
 
 use crate::{errors::ExpressionError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/binary/mod.rs b/compiler/src/expression/binary/mod.rs
index 6c773d3071..1227a562c9 100644
--- a/compiler/src/expression/binary/mod.rs
+++ b/compiler/src/expression/binary/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce binary expressions in a compiled Leo program.
 
 pub mod binary;
diff --git a/compiler/src/expression/binary/operand.rs b/compiler/src/expression/binary/operand.rs
index f868a7e570..bc0f815ac7 100644
--- a/compiler/src/expression/binary/operand.rs
+++ b/compiler/src/expression/binary/operand.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces one operand in a binary expression in a compiled Leo program.
 
 use crate::{errors::ExpressionError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/circuit/access.rs b/compiler/src/expression/circuit/access.rs
index 26802753cc..716ff73dba 100644
--- a/compiler/src/expression/circuit/access.rs
+++ b/compiler/src/expression/circuit/access.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a circuit access expression in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/expression/circuit/circuit.rs b/compiler/src/expression/circuit/circuit.rs
index 59000c80ab..c45292ec4b 100644
--- a/compiler/src/expression/circuit/circuit.rs
+++ b/compiler/src/expression/circuit/circuit.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a circuit expression in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/expression/circuit/mod.rs b/compiler/src/expression/circuit/mod.rs
index ad707d8465..0f44eabce1 100644
--- a/compiler/src/expression/circuit/mod.rs
+++ b/compiler/src/expression/circuit/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce circuit expressions in a compiled Leo program.
 
 pub mod access;
diff --git a/compiler/src/expression/circuit/static_access.rs b/compiler/src/expression/circuit/static_access.rs
index 6485713417..403de0b100 100644
--- a/compiler/src/expression/circuit/static_access.rs
+++ b/compiler/src/expression/circuit/static_access.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a circuit static access expression in a compiled Leo program.
 
 use crate::{errors::ExpressionError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/conditional/conditional.rs b/compiler/src/expression/conditional/conditional.rs
index 53bddff416..28dde01676 100644
--- a/compiler/src/expression/conditional/conditional.rs
+++ b/compiler/src/expression/conditional/conditional.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a conditional expression in a compiled Leo program.
 
 use crate::{errors::ExpressionError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/conditional/mod.rs b/compiler/src/expression/conditional/mod.rs
index 34e4db8050..08c326f92d 100644
--- a/compiler/src/expression/conditional/mod.rs
+++ b/compiler/src/expression/conditional/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce conditional expressions in a compiled Leo program.
 
 pub mod conditional;
diff --git a/compiler/src/expression/expression.rs b/compiler/src/expression/expression.rs
index e8b2ebaef2..900b69f689 100644
--- a/compiler/src/expression/expression.rs
+++ b/compiler/src/expression/expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforce constraints on an expression in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/expression/function/function.rs b/compiler/src/expression/function/function.rs
index 4c7a6bb736..a3cb52f92f 100644
--- a/compiler/src/expression/function/function.rs
+++ b/compiler/src/expression/function/function.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforce a function call expression in a compiled Leo program.
 
 use crate::{errors::ExpressionError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/function/mod.rs b/compiler/src/expression/function/mod.rs
index c456ec23e3..8fa8badb89 100644
--- a/compiler/src/expression/function/mod.rs
+++ b/compiler/src/expression/function/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce function call expressions in a compiled Leo program.
 
 pub mod function;
diff --git a/compiler/src/expression/identifier/identifier.rs b/compiler/src/expression/identifier/identifier.rs
index 9fa99aad1e..c85a74cba8 100644
--- a/compiler/src/expression/identifier/identifier.rs
+++ b/compiler/src/expression/identifier/identifier.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces an identifier expression in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/expression/identifier/mod.rs b/compiler/src/expression/identifier/mod.rs
index 2845a35609..e7782a19b7 100644
--- a/compiler/src/expression/identifier/mod.rs
+++ b/compiler/src/expression/identifier/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce identifier expressions in a compiled Leo program.
 
 pub mod identifier;
diff --git a/compiler/src/expression/logical/and.rs b/compiler/src/expression/logical/and.rs
index ee80c1ba1b..0f3a03004c 100644
--- a/compiler/src/expression/logical/and.rs
+++ b/compiler/src/expression/logical/and.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a logical `&&` operator in a resolved Leo program.
 
 use crate::{errors::BooleanError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/logical/mod.rs b/compiler/src/expression/logical/mod.rs
index 004b9358c9..6edcf02686 100644
--- a/compiler/src/expression/logical/mod.rs
+++ b/compiler/src/expression/logical/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce logical expressions in a compiled Leo program.
 
 pub mod and;
diff --git a/compiler/src/expression/logical/not.rs b/compiler/src/expression/logical/not.rs
index 9e1d63b230..7f23b4651d 100644
--- a/compiler/src/expression/logical/not.rs
+++ b/compiler/src/expression/logical/not.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a logical `!` operator in a resolved Leo program.
 
 use crate::{errors::BooleanError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/logical/or.rs b/compiler/src/expression/logical/or.rs
index 454ba1be25..0492530ef4 100644
--- a/compiler/src/expression/logical/or.rs
+++ b/compiler/src/expression/logical/or.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a logical `||` operator in a resolved Leo program.
 
 use crate::{errors::BooleanError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/mod.rs b/compiler/src/expression/mod.rs
index fda9ebcbad..45fcde4b00 100644
--- a/compiler/src/expression/mod.rs
+++ b/compiler/src/expression/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce expressions in a compiled Leo program.
 
 pub mod arithmetic;
diff --git a/compiler/src/expression/relational/eq.rs b/compiler/src/expression/relational/eq.rs
index 6f62542001..b980985390 100644
--- a/compiler/src/expression/relational/eq.rs
+++ b/compiler/src/expression/relational/eq.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a relational `==` operator in a resolved Leo program.
 
 use crate::{errors::ExpressionError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/relational/ge.rs b/compiler/src/expression/relational/ge.rs
index a91cc8d3bc..0589b82e7f 100644
--- a/compiler/src/expression/relational/ge.rs
+++ b/compiler/src/expression/relational/ge.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a relational `>=` operator in a resolved Leo program.
 
 use crate::{errors::ExpressionError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/relational/gt.rs b/compiler/src/expression/relational/gt.rs
index 4fc26cbe20..5b26b1acc1 100644
--- a/compiler/src/expression/relational/gt.rs
+++ b/compiler/src/expression/relational/gt.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a relational `>` operator in a resolved Leo program.
 
 use crate::{errors::ExpressionError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/relational/le.rs b/compiler/src/expression/relational/le.rs
index 06f8d47294..a07051d9ed 100644
--- a/compiler/src/expression/relational/le.rs
+++ b/compiler/src/expression/relational/le.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a relational `<=` operator in a resolved Leo program.
 
 use crate::{errors::ExpressionError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/relational/lt.rs b/compiler/src/expression/relational/lt.rs
index 4c49c36bd1..611d9f3661 100644
--- a/compiler/src/expression/relational/lt.rs
+++ b/compiler/src/expression/relational/lt.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a relational `<` operator in a resolved Leo program.
 
 use crate::{errors::ExpressionError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/relational/mod.rs b/compiler/src/expression/relational/mod.rs
index 2bb58dc9c7..892404cc36 100644
--- a/compiler/src/expression/relational/mod.rs
+++ b/compiler/src/expression/relational/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on relational expressions in a compiled Leo program.
 
 pub mod eq;
diff --git a/compiler/src/expression/tuple/access.rs b/compiler/src/expression/tuple/access.rs
index 00e5ffb1ed..5eab26013b 100644
--- a/compiler/src/expression/tuple/access.rs
+++ b/compiler/src/expression/tuple/access.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces array access in a compiled Leo program.
 
 use crate::{errors::ExpressionError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/expression/tuple/mod.rs b/compiler/src/expression/tuple/mod.rs
index ca474dfcc7..db73733462 100644
--- a/compiler/src/expression/tuple/mod.rs
+++ b/compiler/src/expression/tuple/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce tuple expressions in a compiled Leo program.
 
 pub mod access;
diff --git a/compiler/src/expression/tuple/tuple.rs b/compiler/src/expression/tuple/tuple.rs
index 2622a82ff7..caed61a360 100644
--- a/compiler/src/expression/tuple/tuple.rs
+++ b/compiler/src/expression/tuple/tuple.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces an tuple expression in a compiled Leo program.
 
 use crate::{errors::ExpressionError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/function/function.rs b/compiler/src/function/function.rs
index d266e1fa8a..154bb0f844 100644
--- a/compiler/src/function/function.rs
+++ b/compiler/src/function/function.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces constraints on a function in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/function/input/array.rs b/compiler/src/function/input/array.rs
index cb6e39602b..9b988a2d14 100644
--- a/compiler/src/function/input/array.rs
+++ b/compiler/src/function/input/array.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Allocates an array as a main function input parameter in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/function/input/function_input.rs b/compiler/src/function/input/function_input.rs
index 8038b136df..2c377c4398 100644
--- a/compiler/src/function/input/function_input.rs
+++ b/compiler/src/function/input/function_input.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a function input parameter in a compiled Leo program.
 
 use crate::{errors::FunctionError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/function/input/input_keyword.rs b/compiler/src/function/input/input_keyword.rs
index 85e9e1a71b..3dac6509f9 100644
--- a/compiler/src/function/input/input_keyword.rs
+++ b/compiler/src/function/input/input_keyword.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{errors::FunctionError, ConstrainedCircuitMember, ConstrainedProgram, ConstrainedValue, GroupType};
 use leo_typed::{Identifier, Input};
 
diff --git a/compiler/src/function/input/input_section.rs b/compiler/src/function/input/input_section.rs
index 2abbf7cd4c..ab0d849ce0 100644
--- a/compiler/src/function/input/input_section.rs
+++ b/compiler/src/function/input/input_section.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{errors::FunctionError, ConstrainedCircuitMember, ConstrainedProgram, ConstrainedValue, GroupType};
 
 use leo_typed::{Identifier, InputValue, Parameter};
diff --git a/compiler/src/function/input/main_function_input.rs b/compiler/src/function/input/main_function_input.rs
index 1d27ee33a6..12b848b9a8 100644
--- a/compiler/src/function/input/main_function_input.rs
+++ b/compiler/src/function/input/main_function_input.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Allocates a main function input parameter in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/function/input/mod.rs b/compiler/src/function/input/mod.rs
index 34d417ce4f..562a9165b0 100644
--- a/compiler/src/function/input/mod.rs
+++ b/compiler/src/function/input/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce function input variables in a compiled Leo program.
 
 pub mod array;
diff --git a/compiler/src/function/input/tuple.rs b/compiler/src/function/input/tuple.rs
index 55a0eba022..2712f2e1db 100644
--- a/compiler/src/function/input/tuple.rs
+++ b/compiler/src/function/input/tuple.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Allocates an array as a main function input parameter in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/function/main_function.rs b/compiler/src/function/main_function.rs
index d8f4f9bbae..2a99ba39c2 100644
--- a/compiler/src/function/main_function.rs
+++ b/compiler/src/function/main_function.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces constraints on the main function of a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/function/mod.rs b/compiler/src/function/mod.rs
index 97b2d3ad45..0f15a38d04 100644
--- a/compiler/src/function/mod.rs
+++ b/compiler/src/function/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on functions in a compiled Leo program.
 
 pub mod input;
diff --git a/compiler/src/function/result/mod.rs b/compiler/src/function/result/mod.rs
index fe0fd1e0f1..1b9e990453 100644
--- a/compiler/src/function/result/mod.rs
+++ b/compiler/src/function/result/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on a function result in a compiled Leo program.
 
 pub mod result;
diff --git a/compiler/src/function/result/result.rs b/compiler/src/function/result/result.rs
index 49fc830cfa..81fc947f04 100644
--- a/compiler/src/function/result/result.rs
+++ b/compiler/src/function/result/result.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces that one return value is produced in a compiled Leo program.
 
 use crate::{errors::StatementError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/import/mod.rs b/compiler/src/import/mod.rs
index 5fbf9c88f3..1e72ba4545 100644
--- a/compiler/src/import/mod.rs
+++ b/compiler/src/import/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Imports are split up into two parts: parsing and storing
 
 /// The import parser creates a hashmap of import program names -> import program structs
diff --git a/compiler/src/import/parser/import_parser.rs b/compiler/src/import/parser/import_parser.rs
index 9a9234f2bb..2707208d52 100644
--- a/compiler/src/import/parser/import_parser.rs
+++ b/compiler/src/import/parser/import_parser.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::errors::ImportError;
 use leo_typed::Program;
 
diff --git a/compiler/src/import/parser/mod.rs b/compiler/src/import/parser/mod.rs
index e7d196ee0b..a3d7851112 100644
--- a/compiler/src/import/parser/mod.rs
+++ b/compiler/src/import/parser/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 /// The import parser creates a hashmap of import program names -> import program structs
 pub mod parse_symbol;
 pub use self::parse_symbol::*;
diff --git a/compiler/src/import/parser/parse_package.rs b/compiler/src/import/parser/parse_package.rs
index 0a149b1adb..9ea0926820 100644
--- a/compiler/src/import/parser/parse_package.rs
+++ b/compiler/src/import/parser/parse_package.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{errors::ImportError, ImportParser};
 use leo_typed::{Package, PackageAccess};
 
diff --git a/compiler/src/import/parser/parse_symbol.rs b/compiler/src/import/parser/parse_symbol.rs
index fc6884415e..e0b7f4e156 100644
--- a/compiler/src/import/parser/parse_symbol.rs
+++ b/compiler/src/import/parser/parse_symbol.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{errors::ImportError, ImportParser};
 use leo_ast::LeoAst;
 use leo_typed::{ImportSymbol, Program, Span};
diff --git a/compiler/src/import/store/import.rs b/compiler/src/import/store/import.rs
index 9833330b5e..b2adb22402 100644
--- a/compiler/src/import/store/import.rs
+++ b/compiler/src/import/store/import.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{errors::ImportError, imported_symbols::ImportedSymbols, ConstrainedProgram, GroupType, ImportParser};
 use leo_typed::Import;
 
diff --git a/compiler/src/import/store/imported_symbols.rs b/compiler/src/import/store/imported_symbols.rs
index 71e915a35b..80545e01f4 100644
--- a/compiler/src/import/store/imported_symbols.rs
+++ b/compiler/src/import/store/imported_symbols.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_typed::{Import, ImportSymbol, Package, PackageAccess};
 
 /// Stores the the package file name and imported symbol from an import statement
diff --git a/compiler/src/import/store/mod.rs b/compiler/src/import/store/mod.rs
index a3c71ed566..cc9702a572 100644
--- a/compiler/src/import/store/mod.rs
+++ b/compiler/src/import/store/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 /// The import store brings an imported symbol into the main program from an import program struct
 pub mod import;
 pub use self::import::*;
diff --git a/compiler/src/import/store/symbol.rs b/compiler/src/import/store/symbol.rs
index dd20022607..f640f05e0c 100644
--- a/compiler/src/import/store/symbol.rs
+++ b/compiler/src/import/store/symbol.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{errors::ImportError, new_scope, ConstrainedProgram, ConstrainedValue, GroupType};
 use leo_typed::{ImportSymbol, Program};
 
diff --git a/compiler/src/lib.rs b/compiler/src/lib.rs
index 1b0cd3a006..e5086691bd 100644
--- a/compiler/src/lib.rs
+++ b/compiler/src/lib.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Module containing structs and types that make up a Leo program.
 
 #[macro_use]
diff --git a/compiler/src/macro_/format.rs b/compiler/src/macro_/format.rs
index 6065bdedf5..47f6fc7ceb 100644
--- a/compiler/src/macro_/format.rs
+++ b/compiler/src/macro_/format.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Evaluates a formatted string in a compiled Leo program.
 
 use crate::{errors::MacroError, program::ConstrainedProgram, GroupType};
diff --git a/compiler/src/macro_/macro_.rs b/compiler/src/macro_/macro_.rs
index 84e406b802..a6cd053472 100644
--- a/compiler/src/macro_/macro_.rs
+++ b/compiler/src/macro_/macro_.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Evaluates a macro in a compiled Leo program.
 
 use crate::{errors::MacroError, program::ConstrainedProgram, GroupType};
diff --git a/compiler/src/macro_/mod.rs b/compiler/src/macro_/mod.rs
index 5b3801059c..30d4f65e55 100644
--- a/compiler/src/macro_/mod.rs
+++ b/compiler/src/macro_/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod format;
 pub use self::format::*;
 
diff --git a/compiler/src/output/mod.rs b/compiler/src/output/mod.rs
index f112f0a02b..83b6844bc7 100644
--- a/compiler/src/output/mod.rs
+++ b/compiler/src/output/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod output_file;
 pub use self::output_file::*;
 
diff --git a/compiler/src/output/output_bytes.rs b/compiler/src/output/output_bytes.rs
index 7422ad4928..04a5723442 100644
--- a/compiler/src/output/output_bytes.rs
+++ b/compiler/src/output/output_bytes.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{errors::OutputBytesError, ConstrainedValue, GroupType, REGISTERS_VARIABLE_NAME};
 use leo_typed::{Parameter, Registers, Span};
 
diff --git a/compiler/src/output/output_file.rs b/compiler/src/output/output_file.rs
index b495422919..b3eb0deaba 100644
--- a/compiler/src/output/output_file.rs
+++ b/compiler/src/output/output_file.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The `program.out` file.
 
 use crate::errors::OutputFileError;
diff --git a/compiler/src/program/mod.rs b/compiler/src/program/mod.rs
index 795b72faa9..86fb38e5ab 100644
--- a/compiler/src/program/mod.rs
+++ b/compiler/src/program/mod.rs
@@ -1,2 +1,18 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod program;
 pub use self::program::*;
diff --git a/compiler/src/program/program.rs b/compiler/src/program/program.rs
index 9aa4d85657..cc9ca62f7b 100644
--- a/compiler/src/program/program.rs
+++ b/compiler/src/program/program.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! An in memory store to keep track of defined names when constraining a Leo program.
 
 use crate::{value::ConstrainedValue, GroupType};
diff --git a/compiler/src/statement/assert/assert_eq.rs b/compiler/src/statement/assert/assert_eq.rs
index b7633e2289..29e012ce0c 100644
--- a/compiler/src/statement/assert/assert_eq.rs
+++ b/compiler/src/statement/assert/assert_eq.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces an assert equals statement in a compiled Leo program.
 
 use crate::{errors::StatementError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/statement/assert/mod.rs b/compiler/src/statement/assert/mod.rs
index 7315daf7d8..f87f673daf 100644
--- a/compiler/src/statement/assert/mod.rs
+++ b/compiler/src/statement/assert/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on assert statements in a Leo program.
 
 pub mod assert_eq;
diff --git a/compiler/src/statement/assign/array.rs b/compiler/src/statement/assign/array.rs
index 43f980e0fd..0e5e3f0542 100644
--- a/compiler/src/statement/assign/array.rs
+++ b/compiler/src/statement/assign/array.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces an array assignment statement in a compiled Leo program.
 
 use crate::{errors::StatementError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/statement/assign/assign.rs b/compiler/src/statement/assign/assign.rs
index b0783476a2..29a2d78dd1 100644
--- a/compiler/src/statement/assign/assign.rs
+++ b/compiler/src/statement/assign/assign.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces an assign statement in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/statement/assign/assignee.rs b/compiler/src/statement/assign/assignee.rs
index b6ecaa8cc0..99716431ea 100644
--- a/compiler/src/statement/assign/assignee.rs
+++ b/compiler/src/statement/assign/assignee.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Resolves assignees in a compiled Leo program.
 
 use crate::{errors::StatementError, new_scope, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/statement/assign/circuit_field.rs b/compiler/src/statement/assign/circuit_field.rs
index 21468f3591..fb11e39dd9 100644
--- a/compiler/src/statement/assign/circuit_field.rs
+++ b/compiler/src/statement/assign/circuit_field.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a circuit field assignment statement in a compiled Leo program.
 
 use crate::{errors::StatementError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/statement/assign/mod.rs b/compiler/src/statement/assign/mod.rs
index be36c98174..5fbffe869c 100644
--- a/compiler/src/statement/assign/mod.rs
+++ b/compiler/src/statement/assign/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on assign statements in a compiled Leo program.
 
 pub mod array;
diff --git a/compiler/src/statement/assign/tuple.rs b/compiler/src/statement/assign/tuple.rs
index 0038120107..a7ce8a9184 100644
--- a/compiler/src/statement/assign/tuple.rs
+++ b/compiler/src/statement/assign/tuple.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a tuple assignment statement in a compiled Leo program.
 
 use crate::{errors::StatementError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/statement/branch/branch.rs b/compiler/src/statement/branch/branch.rs
index d7f769dc1a..c1e0c0488b 100644
--- a/compiler/src/statement/branch/branch.rs
+++ b/compiler/src/statement/branch/branch.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a branch of a conditional or iteration statement in a compiled Leo program.
 
 use crate::{errors::StatementError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/statement/branch/mod.rs b/compiler/src/statement/branch/mod.rs
index bc95861e5b..3ebf5cbc69 100644
--- a/compiler/src/statement/branch/mod.rs
+++ b/compiler/src/statement/branch/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on a branch of a conditional or iteration statement
 //! in a compiled Leo program.
 
diff --git a/compiler/src/statement/conditional/conditional.rs b/compiler/src/statement/conditional/conditional.rs
index 7d4ba4b537..4a0129fe48 100644
--- a/compiler/src/statement/conditional/conditional.rs
+++ b/compiler/src/statement/conditional/conditional.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on statements in a compiled Leo program.
 
 use crate::{errors::StatementError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/statement/conditional/mod.rs b/compiler/src/statement/conditional/mod.rs
index 44682bd523..b70034d9a3 100644
--- a/compiler/src/statement/conditional/mod.rs
+++ b/compiler/src/statement/conditional/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on conditional statements in a compiled Leo program.
 
 pub mod conditional;
diff --git a/compiler/src/statement/definition/definition.rs b/compiler/src/statement/definition/definition.rs
index 792bddee89..737ec4da4c 100644
--- a/compiler/src/statement/definition/definition.rs
+++ b/compiler/src/statement/definition/definition.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a definition statement in a compiled Leo program.
 
 use crate::{errors::StatementError, program::ConstrainedProgram, ConstrainedValue, GroupType};
diff --git a/compiler/src/statement/definition/mod.rs b/compiler/src/statement/definition/mod.rs
index 1a0945081a..a2ec2c8689 100644
--- a/compiler/src/statement/definition/mod.rs
+++ b/compiler/src/statement/definition/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on definition statements in a compiled Leo program.
 
 pub mod definition;
diff --git a/compiler/src/statement/iteration/iteration.rs b/compiler/src/statement/iteration/iteration.rs
index 5f2baf38ed..fde92b2dcc 100644
--- a/compiler/src/statement/iteration/iteration.rs
+++ b/compiler/src/statement/iteration/iteration.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces an iteration statement in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/src/statement/iteration/mod.rs b/compiler/src/statement/iteration/mod.rs
index 345fa41500..fe09bd951e 100644
--- a/compiler/src/statement/iteration/mod.rs
+++ b/compiler/src/statement/iteration/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on iteration statements in a compiled Leo program.
 
 pub mod iteration;
diff --git a/compiler/src/statement/mod.rs b/compiler/src/statement/mod.rs
index 48e762a01a..958519cb92 100644
--- a/compiler/src/statement/mod.rs
+++ b/compiler/src/statement/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on statements in a Leo program.
 
 pub mod assert;
diff --git a/compiler/src/statement/return_/mod.rs b/compiler/src/statement/return_/mod.rs
index 9cea4a7781..9e6e183dbd 100644
--- a/compiler/src/statement/return_/mod.rs
+++ b/compiler/src/statement/return_/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on return statements in a compiled Leo program.
 
 pub mod return_;
diff --git a/compiler/src/statement/return_/return_.rs b/compiler/src/statement/return_/return_.rs
index bf1342a5df..53c2817279 100644
--- a/compiler/src/statement/return_/return_.rs
+++ b/compiler/src/statement/return_/return_.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a return statement in a compiled Leo program.
 
 use crate::{errors::StatementError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/statement/statement.rs b/compiler/src/statement/statement.rs
index 31c9ec3711..1d5ac3d237 100644
--- a/compiler/src/statement/statement.rs
+++ b/compiler/src/statement/statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces a statement in a compiled Leo program.
 
 use crate::{errors::StatementError, program::ConstrainedProgram, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/value/address/address.rs b/compiler/src/value/address/address.rs
index da143bcaba..980687d6b7 100644
--- a/compiler/src/value/address/address.rs
+++ b/compiler/src/value/address/address.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{errors::AddressError, ConstrainedValue, GroupType};
 use leo_typed::{InputValue, Span};
 
diff --git a/compiler/src/value/address/mod.rs b/compiler/src/value/address/mod.rs
index 855451c5a2..14e6d2758d 100644
--- a/compiler/src/value/address/mod.rs
+++ b/compiler/src/value/address/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! An address value in a compiled Leo program.
 
 pub mod address;
diff --git a/compiler/src/value/boolean/input.rs b/compiler/src/value/boolean/input.rs
index 50e41cc244..6a42697b23 100644
--- a/compiler/src/value/boolean/input.rs
+++ b/compiler/src/value/boolean/input.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on input boolean values in a resolved Leo program.
 
 use crate::{errors::BooleanError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/value/boolean/mod.rs b/compiler/src/value/boolean/mod.rs
index e4178978f4..3ef6438651 100644
--- a/compiler/src/value/boolean/mod.rs
+++ b/compiler/src/value/boolean/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! A boolean value in a compiled Leo program.
 
 pub mod input;
diff --git a/compiler/src/value/field/field_type.rs b/compiler/src/value/field/field_type.rs
index 67afc09ebc..063ff14510 100644
--- a/compiler/src/value/field/field_type.rs
+++ b/compiler/src/value/field/field_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! A data type that represents a field value
 
 use crate::errors::FieldError;
diff --git a/compiler/src/value/field/input.rs b/compiler/src/value/field/input.rs
index b01044ef0f..a4f8ba9a87 100644
--- a/compiler/src/value/field/input.rs
+++ b/compiler/src/value/field/input.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on input field values in a compiled Leo program.
 
 use crate::{errors::FieldError, value::ConstrainedValue, FieldType, GroupType};
diff --git a/compiler/src/value/field/mod.rs b/compiler/src/value/field/mod.rs
index 3be1984e7e..f17f118f57 100644
--- a/compiler/src/value/field/mod.rs
+++ b/compiler/src/value/field/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! A field value in a compiled Leo program.
 
 pub mod input;
diff --git a/compiler/src/value/group/group_type.rs b/compiler/src/value/group/group_type.rs
index fc7534e2ed..2cde923985 100644
--- a/compiler/src/value/group/group_type.rs
+++ b/compiler/src/value/group/group_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! A data type that represents members in the group formed by the set of affine points on a curve.
 
 use crate::errors::GroupError;
diff --git a/compiler/src/value/group/input.rs b/compiler/src/value/group/input.rs
index a5df8f4112..d85b64e302 100644
--- a/compiler/src/value/group/input.rs
+++ b/compiler/src/value/group/input.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on input group values in a Leo program.
 
 use crate::{errors::GroupError, ConstrainedValue, GroupType};
diff --git a/compiler/src/value/group/mod.rs b/compiler/src/value/group/mod.rs
index 3cd18128a7..5697fe1217 100644
--- a/compiler/src/value/group/mod.rs
+++ b/compiler/src/value/group/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! A group value in a compiled Leo program.
 
 pub mod input;
diff --git a/compiler/src/value/group/targets/edwards_bls12.rs b/compiler/src/value/group/targets/edwards_bls12.rs
index a6e20a4769..537a71dfa3 100644
--- a/compiler/src/value/group/targets/edwards_bls12.rs
+++ b/compiler/src/value/group/targets/edwards_bls12.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{errors::GroupError, GroupType};
 use leo_typed::{GroupCoordinate, GroupValue, Span};
 
diff --git a/compiler/src/value/group/targets/mod.rs b/compiler/src/value/group/targets/mod.rs
index 5b6bc78def..5bf08cbc54 100644
--- a/compiler/src/value/group/targets/mod.rs
+++ b/compiler/src/value/group/targets/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! implemented group targets
 
 pub mod edwards_bls12;
diff --git a/compiler/src/value/implicit/implicit.rs b/compiler/src/value/implicit/implicit.rs
index 823591dfb6..8256471832 100644
--- a/compiler/src/value/implicit/implicit.rs
+++ b/compiler/src/value/implicit/implicit.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Enforces constraints on an implicit number in a compiled Leo program.
 
 use crate::{errors::ValueError, value::ConstrainedValue, GroupType};
diff --git a/compiler/src/value/implicit/mod.rs b/compiler/src/value/implicit/mod.rs
index 59fbd36610..136af271f6 100644
--- a/compiler/src/value/implicit/mod.rs
+++ b/compiler/src/value/implicit/mod.rs
@@ -1,2 +1,18 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod implicit;
 pub use self::implicit::*;
diff --git a/compiler/src/value/integer/integer.rs b/compiler/src/value/integer/integer.rs
index 465f2353c1..85e84d6ba2 100644
--- a/compiler/src/value/integer/integer.rs
+++ b/compiler/src/value/integer/integer.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Conversion of integer declarations to constraints in Leo.
 use crate::{errors::IntegerError, IntegerTrait};
 use leo_gadgets::{
diff --git a/compiler/src/value/integer/macros.rs b/compiler/src/value/integer/macros.rs
index 71d8d54681..c63e6f9d5c 100644
--- a/compiler/src/value/integer/macros.rs
+++ b/compiler/src/value/integer/macros.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_gadgets::signed_integer::*;
 
 use snarkos_models::gadgets::utilities::{
diff --git a/compiler/src/value/integer/mod.rs b/compiler/src/value/integer/mod.rs
index e513df2e0c..068cfceef3 100644
--- a/compiler/src/value/integer/mod.rs
+++ b/compiler/src/value/integer/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 pub mod macros;
 pub use self::macros::*;
diff --git a/compiler/src/value/mod.rs b/compiler/src/value/mod.rs
index 654fa0211d..2836c9c3dd 100644
--- a/compiler/src/value/mod.rs
+++ b/compiler/src/value/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Methods to enforce constraints on values in a Leo program.
 
 pub mod address;
diff --git a/compiler/src/value/value.rs b/compiler/src/value/value.rs
index 2fc3c0053a..a37636f31e 100644
--- a/compiler/src/value/value.rs
+++ b/compiler/src/value/value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The in memory stored value for a defined name in a compiled Leo program.
 
 use crate::{
diff --git a/compiler/tests/address/mod.rs b/compiler/tests/address/mod.rs
index 6c3996c30e..b40ba3e046 100644
--- a/compiler/tests/address/mod.rs
+++ b/compiler/tests/address/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{assert_satisfied, expect_compiler_error, generate_main_input, parse_program};
 use leo_typed::InputValue;
 
diff --git a/compiler/tests/array/mod.rs b/compiler/tests/array/mod.rs
index 63090e2bb7..70a68126a2 100644
--- a/compiler/tests/array/mod.rs
+++ b/compiler/tests/array/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_compiler_error,
diff --git a/compiler/tests/boolean/mod.rs b/compiler/tests/boolean/mod.rs
index b0a173e14c..72a33f9178 100644
--- a/compiler/tests/boolean/mod.rs
+++ b/compiler/tests/boolean/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_compiler_error,
diff --git a/compiler/tests/circuits/mod.rs b/compiler/tests/circuits/mod.rs
index 606e127ba6..deb615c99b 100644
--- a/compiler/tests/circuits/mod.rs
+++ b/compiler/tests/circuits/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{assert_satisfied, expect_compiler_error, parse_program, EdwardsTestCompiler};
 use leo_compiler::errors::{CompilerError, ExpressionError, FunctionError, StatementError};
 
diff --git a/compiler/tests/definition/mod.rs b/compiler/tests/definition/mod.rs
index 431bf7ea59..7b38d695fc 100644
--- a/compiler/tests/definition/mod.rs
+++ b/compiler/tests/definition/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{assert_satisfied, import::set_local_dir, parse_program};
 
 #[test]
diff --git a/compiler/tests/field/mod.rs b/compiler/tests/field/mod.rs
index 3249d3d783..ec2a921ad7 100644
--- a/compiler/tests/field/mod.rs
+++ b/compiler/tests/field/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{assert_satisfied, expect_synthesis_error, generate_main_input, parse_program};
 use leo_typed::InputValue;
 
diff --git a/compiler/tests/function/mod.rs b/compiler/tests/function/mod.rs
index 1fe9b24e4b..3fbc7da6d4 100644
--- a/compiler/tests/function/mod.rs
+++ b/compiler/tests/function/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_compiler_error,
diff --git a/compiler/tests/group/mod.rs b/compiler/tests/group/mod.rs
index 676059271f..a728f1fdf6 100644
--- a/compiler/tests/group/mod.rs
+++ b/compiler/tests/group/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_compiler_error,
diff --git a/compiler/tests/import/mod.rs b/compiler/tests/import/mod.rs
index 765b1ff65f..d4bd578c0b 100644
--- a/compiler/tests/import/mod.rs
+++ b/compiler/tests/import/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{assert_satisfied, parse_program};
 
 use std::env::{current_dir, set_current_dir};
diff --git a/compiler/tests/input_files/mod.rs b/compiler/tests/input_files/mod.rs
index 64f5dd9f32..ddfd9aa108 100644
--- a/compiler/tests/input_files/mod.rs
+++ b/compiler/tests/input_files/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 mod program_input;
 mod program_input_and_program_state;
 mod program_state;
diff --git a/compiler/tests/input_files/program_input/mod.rs b/compiler/tests/input_files/program_input/mod.rs
index 0cf67e3404..830e3b8651 100644
--- a/compiler/tests/input_files/program_input/mod.rs
+++ b/compiler/tests/input_files/program_input/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{assert_satisfied, expect_compiler_error, parse_program_with_input, EdwardsTestCompiler};
 use leo_compiler::errors::CompilerError;
 
diff --git a/compiler/tests/input_files/program_input_and_program_state/mod.rs b/compiler/tests/input_files/program_input_and_program_state/mod.rs
index ab5aa648cd..c80bd98b7b 100644
--- a/compiler/tests/input_files/program_input_and_program_state/mod.rs
+++ b/compiler/tests/input_files/program_input_and_program_state/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{assert_satisfied, parse_input_and_state, parse_program_with_input_and_state};
 
 #[test]
diff --git a/compiler/tests/input_files/program_state/mod.rs b/compiler/tests/input_files/program_state/mod.rs
index e7754af652..d3e46194b1 100644
--- a/compiler/tests/input_files/program_state/mod.rs
+++ b/compiler/tests/input_files/program_state/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{assert_satisfied, parse_program_with_state, parse_state};
 
 #[test]
diff --git a/compiler/tests/integers/i128/mod.rs b/compiler/tests/integers/i128/mod.rs
index 0c3574755d..dd6b5af4c5 100644
--- a/compiler/tests/integers/i128/mod.rs
+++ b/compiler/tests/integers/i128/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_synthesis_error,
diff --git a/compiler/tests/integers/i16/mod.rs b/compiler/tests/integers/i16/mod.rs
index 7f419c37c6..f05876e57a 100644
--- a/compiler/tests/integers/i16/mod.rs
+++ b/compiler/tests/integers/i16/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_synthesis_error,
diff --git a/compiler/tests/integers/i32/mod.rs b/compiler/tests/integers/i32/mod.rs
index 96c0e4abf9..b760b76864 100644
--- a/compiler/tests/integers/i32/mod.rs
+++ b/compiler/tests/integers/i32/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_synthesis_error,
diff --git a/compiler/tests/integers/i64/mod.rs b/compiler/tests/integers/i64/mod.rs
index 8f18f85c09..9c903d4253 100644
--- a/compiler/tests/integers/i64/mod.rs
+++ b/compiler/tests/integers/i64/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_synthesis_error,
diff --git a/compiler/tests/integers/i8/mod.rs b/compiler/tests/integers/i8/mod.rs
index 37dd327545..c365b36691 100644
--- a/compiler/tests/integers/i8/mod.rs
+++ b/compiler/tests/integers/i8/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_synthesis_error,
diff --git a/compiler/tests/integers/int_macro.rs b/compiler/tests/integers/int_macro.rs
index 6ad1dd3b56..6b9891c3ae 100644
--- a/compiler/tests/integers/int_macro.rs
+++ b/compiler/tests/integers/int_macro.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 macro_rules! test_int {
     ($name: ident, $type_: ty, $integer_type: expr, $gadget: ty) => {
         pub struct $name {}
diff --git a/compiler/tests/integers/integer_tester.rs b/compiler/tests/integers/integer_tester.rs
index 8539798ef2..5ecba3ed3a 100644
--- a/compiler/tests/integers/integer_tester.rs
+++ b/compiler/tests/integers/integer_tester.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{expect_compiler_error, EdwardsTestCompiler};
 use leo_compiler::errors::{CompilerError, ExpressionError, FunctionError, IntegerError, StatementError, ValueError};
 
diff --git a/compiler/tests/integers/mod.rs b/compiler/tests/integers/mod.rs
index 5b76da6e08..f01ba93534 100644
--- a/compiler/tests/integers/mod.rs
+++ b/compiler/tests/integers/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 pub mod int_macro;
 
diff --git a/compiler/tests/integers/u128/mod.rs b/compiler/tests/integers/u128/mod.rs
index a0e79a6026..e14d002488 100644
--- a/compiler/tests/integers/u128/mod.rs
+++ b/compiler/tests/integers/u128/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_synthesis_error,
diff --git a/compiler/tests/integers/u16/mod.rs b/compiler/tests/integers/u16/mod.rs
index f321e5771a..b08a71c608 100644
--- a/compiler/tests/integers/u16/mod.rs
+++ b/compiler/tests/integers/u16/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_synthesis_error,
diff --git a/compiler/tests/integers/u32/mod.rs b/compiler/tests/integers/u32/mod.rs
index a7db6b97c2..e40a27852a 100644
--- a/compiler/tests/integers/u32/mod.rs
+++ b/compiler/tests/integers/u32/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_synthesis_error,
diff --git a/compiler/tests/integers/u64/mod.rs b/compiler/tests/integers/u64/mod.rs
index e58dd64693..faacb6588e 100644
--- a/compiler/tests/integers/u64/mod.rs
+++ b/compiler/tests/integers/u64/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_synthesis_error,
diff --git a/compiler/tests/integers/u8/mod.rs b/compiler/tests/integers/u8/mod.rs
index c13a63e29e..78161dd2fd 100644
--- a/compiler/tests/integers/u8/mod.rs
+++ b/compiler/tests/integers/u8/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_synthesis_error,
diff --git a/compiler/tests/integers/uint_macro.rs b/compiler/tests/integers/uint_macro.rs
index 3600372173..e744ed838a 100644
--- a/compiler/tests/integers/uint_macro.rs
+++ b/compiler/tests/integers/uint_macro.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 macro_rules! test_uint {
     ($name: ident, $type_: ty, $integer_type: expr, $gadget: ty) => {
         pub struct $name {}
diff --git a/compiler/tests/macros/mod.rs b/compiler/tests/macros/mod.rs
index 661f8db295..97e0e0b62a 100644
--- a/compiler/tests/macros/mod.rs
+++ b/compiler/tests/macros/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{assert_satisfied, expect_compiler_error, generate_main_input, parse_program};
 use leo_typed::InputValue;
 
diff --git a/compiler/tests/mod.rs b/compiler/tests/mod.rs
index b58767e5d0..0c6f737f6a 100644
--- a/compiler/tests/mod.rs
+++ b/compiler/tests/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod address;
 pub mod array;
 pub mod boolean;
diff --git a/compiler/tests/mutability/mod.rs b/compiler/tests/mutability/mod.rs
index 460f8a0565..3c00bab145 100644
--- a/compiler/tests/mutability/mod.rs
+++ b/compiler/tests/mutability/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{assert_satisfied, expect_compiler_error, generate_main_input, parse_program};
 use leo_typed::InputValue;
 
diff --git a/compiler/tests/statements/conditional/mod.rs b/compiler/tests/statements/conditional/mod.rs
index f071239761..4ef2b7fd14 100644
--- a/compiler/tests/statements/conditional/mod.rs
+++ b/compiler/tests/statements/conditional/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     assert_satisfied,
     expect_synthesis_error,
diff --git a/compiler/tests/statements/mod.rs b/compiler/tests/statements/mod.rs
index b4c98b9f3a..3829009e1c 100644
--- a/compiler/tests/statements/mod.rs
+++ b/compiler/tests/statements/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{assert_satisfied, expect_compiler_error, expect_synthesis_error, generate_main_input, parse_program};
 use leo_typed::InputValue;
 
diff --git a/compiler/tests/syntax/mod.rs b/compiler/tests/syntax/mod.rs
index 66f479796d..da0f980d90 100644
--- a/compiler/tests/syntax/mod.rs
+++ b/compiler/tests/syntax/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{expect_compiler_error, parse_input, parse_program};
 use leo_ast::ParserError;
 use leo_compiler::errors::{CompilerError, ExpressionError, FunctionError, StatementError};
diff --git a/compiler/tests/tuples/mod.rs b/compiler/tests/tuples/mod.rs
index f1556ba94c..9c52764c5f 100644
--- a/compiler/tests/tuples/mod.rs
+++ b/compiler/tests/tuples/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{assert_satisfied, parse_program};
 
 #[test]
diff --git a/gadgets/src/arithmetic/add.rs b/gadgets/src/arithmetic/add.rs
index 522da0819b..28adc4d650 100644
--- a/gadgets/src/arithmetic/add.rs
+++ b/gadgets/src/arithmetic/add.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use snarkos_errors::gadgets::SynthesisError;
 use snarkos_models::{
     curves::{Field, PrimeField},
diff --git a/gadgets/src/arithmetic/div.rs b/gadgets/src/arithmetic/div.rs
index 097ae5962e..505701c71e 100644
--- a/gadgets/src/arithmetic/div.rs
+++ b/gadgets/src/arithmetic/div.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use snarkos_models::{curves::Field, gadgets::r1cs::ConstraintSystem};
 
 /// Returns division of `self` / `other` in the constraint system.
diff --git a/gadgets/src/arithmetic/mod.rs b/gadgets/src/arithmetic/mod.rs
index 20cae8f65a..084aeb03a5 100644
--- a/gadgets/src/arithmetic/mod.rs
+++ b/gadgets/src/arithmetic/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod add;
 pub use self::add::*;
 
diff --git a/gadgets/src/arithmetic/mul.rs b/gadgets/src/arithmetic/mul.rs
index 207fa8b212..80c53d7392 100644
--- a/gadgets/src/arithmetic/mul.rs
+++ b/gadgets/src/arithmetic/mul.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use snarkos_models::{curves::Field, gadgets::r1cs::ConstraintSystem};
 
 /// Returns multiplication of `self` * `other` in the constraint system.
diff --git a/gadgets/src/arithmetic/neg.rs b/gadgets/src/arithmetic/neg.rs
index 9eabb4d83f..4ac569ce96 100644
--- a/gadgets/src/arithmetic/neg.rs
+++ b/gadgets/src/arithmetic/neg.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::bits::RippleCarryAdder;
 
 use snarkos_errors::gadgets::SynthesisError;
diff --git a/gadgets/src/arithmetic/pow.rs b/gadgets/src/arithmetic/pow.rs
index 9cb07f95b1..58d56a451c 100644
--- a/gadgets/src/arithmetic/pow.rs
+++ b/gadgets/src/arithmetic/pow.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use snarkos_models::{curves::Field, gadgets::r1cs::ConstraintSystem};
 
 /// Returns exponentiation of `self` ** `other` in the constraint system.
diff --git a/gadgets/src/arithmetic/sub.rs b/gadgets/src/arithmetic/sub.rs
index 370b375908..3709e0df4f 100644
--- a/gadgets/src/arithmetic/sub.rs
+++ b/gadgets/src/arithmetic/sub.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use snarkos_models::{curves::Field, gadgets::r1cs::ConstraintSystem};
 
 /// Returns subtraction of `self` - `other` in the constraint system.
diff --git a/gadgets/src/bits/adder.rs b/gadgets/src/bits/adder.rs
index 5461c9cb7e..91a2524f2e 100644
--- a/gadgets/src/bits/adder.rs
+++ b/gadgets/src/bits/adder.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use snarkos_errors::gadgets::SynthesisError;
 use snarkos_models::{
     curves::Field,
diff --git a/gadgets/src/bits/comparator.rs b/gadgets/src/bits/comparator.rs
index 1af89900a0..df48fe10ce 100644
--- a/gadgets/src/bits/comparator.rs
+++ b/gadgets/src/bits/comparator.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use snarkos_errors::gadgets::SynthesisError;
 use snarkos_models::{
     curves::{Field, PrimeField},
diff --git a/gadgets/src/bits/mod.rs b/gadgets/src/bits/mod.rs
index 6e55c89964..cec0d61008 100644
--- a/gadgets/src/bits/mod.rs
+++ b/gadgets/src/bits/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 pub mod adder;
 pub use self::adder::*;
diff --git a/gadgets/src/bits/rca.rs b/gadgets/src/bits/rca.rs
index 72c24d03a2..785b0962c2 100644
--- a/gadgets/src/bits/rca.rs
+++ b/gadgets/src/bits/rca.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{bits::FullAdder, signed_integer::*};
 
 use snarkos_errors::gadgets::SynthesisError;
diff --git a/gadgets/src/bits/sign_extend.rs b/gadgets/src/bits/sign_extend.rs
index 63a8777904..7c44047bce 100644
--- a/gadgets/src/bits/sign_extend.rs
+++ b/gadgets/src/bits/sign_extend.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use snarkos_models::gadgets::utilities::boolean::Boolean;
 
 /// Sign extends an array of bits to the desired length.
diff --git a/gadgets/src/errors/mod.rs b/gadgets/src/errors/mod.rs
index 3a4d43aad7..0b8e578304 100644
--- a/gadgets/src/errors/mod.rs
+++ b/gadgets/src/errors/mod.rs
@@ -1,2 +1,18 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod signed_integer;
 pub use self::signed_integer::*;
diff --git a/gadgets/src/errors/signed_integer.rs b/gadgets/src/errors/signed_integer.rs
index 759661435c..0fef69fba7 100644
--- a/gadgets/src/errors/signed_integer.rs
+++ b/gadgets/src/errors/signed_integer.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use snarkos_errors::gadgets::SynthesisError;
 
 #[derive(Debug, Error)]
diff --git a/gadgets/src/lib.rs b/gadgets/src/lib.rs
index 6d7eacfe77..87bfd4dfad 100644
--- a/gadgets/src/lib.rs
+++ b/gadgets/src/lib.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 extern crate thiserror;
 
diff --git a/gadgets/src/signed_integer/arithmetic/add.rs b/gadgets/src/signed_integer/arithmetic/add.rs
index 2d3c83a6f7..4f25997ffd 100644
--- a/gadgets/src/signed_integer/arithmetic/add.rs
+++ b/gadgets/src/signed_integer/arithmetic/add.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     arithmetic::Add,
     bits::RippleCarryAdder,
diff --git a/gadgets/src/signed_integer/arithmetic/div.rs b/gadgets/src/signed_integer/arithmetic/div.rs
index d834c5ac11..80cbddeba6 100644
--- a/gadgets/src/signed_integer/arithmetic/div.rs
+++ b/gadgets/src/signed_integer/arithmetic/div.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     arithmetic::{Add, Div, Neg, Sub},
     bits::ComparatorGadget,
diff --git a/gadgets/src/signed_integer/arithmetic/mod.rs b/gadgets/src/signed_integer/arithmetic/mod.rs
index 8ddd2e086e..6ce2d7f4ef 100644
--- a/gadgets/src/signed_integer/arithmetic/mod.rs
+++ b/gadgets/src/signed_integer/arithmetic/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 pub mod add;
 pub use self::add::*;
diff --git a/gadgets/src/signed_integer/arithmetic/mul.rs b/gadgets/src/signed_integer/arithmetic/mul.rs
index 1a18bab4af..a5abcbf6cc 100644
--- a/gadgets/src/signed_integer/arithmetic/mul.rs
+++ b/gadgets/src/signed_integer/arithmetic/mul.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     arithmetic::Mul,
     bits::{RippleCarryAdder, SignExtend},
diff --git a/gadgets/src/signed_integer/arithmetic/neg.rs b/gadgets/src/signed_integer/arithmetic/neg.rs
index a5124d251f..c81daa7baa 100644
--- a/gadgets/src/signed_integer/arithmetic/neg.rs
+++ b/gadgets/src/signed_integer/arithmetic/neg.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{arithmetic::Neg, errors::SignedIntegerError, signed_integer::*};
 
 use snarkos_models::{curves::PrimeField, gadgets::r1cs::ConstraintSystem};
diff --git a/gadgets/src/signed_integer/arithmetic/pow.rs b/gadgets/src/signed_integer/arithmetic/pow.rs
index aa5b69af90..25e4aa8d48 100644
--- a/gadgets/src/signed_integer/arithmetic/pow.rs
+++ b/gadgets/src/signed_integer/arithmetic/pow.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     arithmetic::{Mul, Pow},
     errors::SignedIntegerError,
diff --git a/gadgets/src/signed_integer/arithmetic/sub.rs b/gadgets/src/signed_integer/arithmetic/sub.rs
index cbc7af9aed..cc1bf41139 100644
--- a/gadgets/src/signed_integer/arithmetic/sub.rs
+++ b/gadgets/src/signed_integer/arithmetic/sub.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     arithmetic::{Add, Neg, Sub},
     errors::SignedIntegerError,
diff --git a/gadgets/src/signed_integer/int_impl.rs b/gadgets/src/signed_integer/int_impl.rs
index 97173b6987..074723cfee 100644
--- a/gadgets/src/signed_integer/int_impl.rs
+++ b/gadgets/src/signed_integer/int_impl.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use snarkos_models::gadgets::utilities::boolean::Boolean;
 
 use std::fmt::Debug;
diff --git a/gadgets/src/signed_integer/mod.rs b/gadgets/src/signed_integer/mod.rs
index 99a2192182..8fb0bd56b9 100644
--- a/gadgets/src/signed_integer/mod.rs
+++ b/gadgets/src/signed_integer/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 
 pub mod arithmetic;
diff --git a/gadgets/src/signed_integer/relational/cmp.rs b/gadgets/src/signed_integer/relational/cmp.rs
index 57fae96f0e..1d02ec166d 100644
--- a/gadgets/src/signed_integer/relational/cmp.rs
+++ b/gadgets/src/signed_integer/relational/cmp.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     bits::{ComparatorGadget, EvaluateLtGadget},
     Int128,
diff --git a/gadgets/src/signed_integer/relational/eq.rs b/gadgets/src/signed_integer/relational/eq.rs
index b1047a7114..0deb39d145 100644
--- a/gadgets/src/signed_integer/relational/eq.rs
+++ b/gadgets/src/signed_integer/relational/eq.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Int, Int128, Int16, Int32, Int64, Int8};
 
 use snarkos_errors::gadgets::SynthesisError;
diff --git a/gadgets/src/signed_integer/relational/mod.rs b/gadgets/src/signed_integer/relational/mod.rs
index 977eaccd49..b88c46fc2f 100644
--- a/gadgets/src/signed_integer/relational/mod.rs
+++ b/gadgets/src/signed_integer/relational/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 pub mod eq;
 pub use self::eq::*;
diff --git a/gadgets/src/signed_integer/utilities/alloc.rs b/gadgets/src/signed_integer/utilities/alloc.rs
index 6958fd58b0..442abd7b6e 100644
--- a/gadgets/src/signed_integer/utilities/alloc.rs
+++ b/gadgets/src/signed_integer/utilities/alloc.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Int, Int128, Int16, Int32, Int64, Int8};
 
 use core::borrow::Borrow;
diff --git a/gadgets/src/signed_integer/utilities/eq.rs b/gadgets/src/signed_integer/utilities/eq.rs
index 594c495788..9a854819c5 100644
--- a/gadgets/src/signed_integer/utilities/eq.rs
+++ b/gadgets/src/signed_integer/utilities/eq.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::signed_integer::*;
 
 use snarkos_errors::gadgets::SynthesisError;
diff --git a/gadgets/src/signed_integer/utilities/mod.rs b/gadgets/src/signed_integer/utilities/mod.rs
index 8bc79c27f7..4bdf1730db 100644
--- a/gadgets/src/signed_integer/utilities/mod.rs
+++ b/gadgets/src/signed_integer/utilities/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 pub mod alloc;
 pub use self::alloc::*;
diff --git a/gadgets/src/signed_integer/utilities/select.rs b/gadgets/src/signed_integer/utilities/select.rs
index de93156fbb..81d36531fb 100644
--- a/gadgets/src/signed_integer/utilities/select.rs
+++ b/gadgets/src/signed_integer/utilities/select.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::signed_integer::*;
 
 use snarkos_errors::gadgets::SynthesisError;
diff --git a/gadgets/tests/mod.rs b/gadgets/tests/mod.rs
index 3a4d43aad7..0b8e578304 100644
--- a/gadgets/tests/mod.rs
+++ b/gadgets/tests/mod.rs
@@ -1,2 +1,18 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod signed_integer;
 pub use self::signed_integer::*;
diff --git a/gadgets/tests/signed_integer/i128.rs b/gadgets/tests/signed_integer/i128.rs
index ce1a7bd74e..4ab475567f 100644
--- a/gadgets/tests/signed_integer/i128.rs
+++ b/gadgets/tests/signed_integer/i128.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_gadgets::{arithmetic::*, Int128};
 
 use snarkos_models::{
diff --git a/gadgets/tests/signed_integer/i16.rs b/gadgets/tests/signed_integer/i16.rs
index ea4c917d7d..f628c2aae8 100644
--- a/gadgets/tests/signed_integer/i16.rs
+++ b/gadgets/tests/signed_integer/i16.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_gadgets::{arithmetic::*, Int16};
 
 use snarkos_models::{
diff --git a/gadgets/tests/signed_integer/i32.rs b/gadgets/tests/signed_integer/i32.rs
index 2bd9d93702..ec5570009e 100644
--- a/gadgets/tests/signed_integer/i32.rs
+++ b/gadgets/tests/signed_integer/i32.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_gadgets::{arithmetic::*, Int32};
 
 use snarkos_models::{
diff --git a/gadgets/tests/signed_integer/i64.rs b/gadgets/tests/signed_integer/i64.rs
index 7a6a0d9811..8ce9141a01 100644
--- a/gadgets/tests/signed_integer/i64.rs
+++ b/gadgets/tests/signed_integer/i64.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_gadgets::{arithmetic::*, Int64};
 
 use snarkos_models::{
diff --git a/gadgets/tests/signed_integer/i8.rs b/gadgets/tests/signed_integer/i8.rs
index 4158d146d3..1d8af1b154 100644
--- a/gadgets/tests/signed_integer/i8.rs
+++ b/gadgets/tests/signed_integer/i8.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_gadgets::{arithmetic::*, Int8};
 
 use snarkos_models::{
diff --git a/gadgets/tests/signed_integer/mod.rs b/gadgets/tests/signed_integer/mod.rs
index 7b46643728..67bf1c0b4b 100644
--- a/gadgets/tests/signed_integer/mod.rs
+++ b/gadgets/tests/signed_integer/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod i128;
 pub mod i16;
 pub mod i32;
diff --git a/input/src/ast.rs b/input/src/ast.rs
index 56d279cf6d..26be6946f9 100644
--- a/input/src/ast.rs
+++ b/input/src/ast.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! Abstract syntax tree (ast) representation from leo-input.pest.
 use pest::{error::Error, iterators::Pairs, Parser, Span};
 
diff --git a/input/src/common/eoi.rs b/input/src/common/eoi.rs
index 1293320f1a..615d0fd49f 100644
--- a/input/src/common/eoi.rs
+++ b/input/src/common/eoi.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/input/src/common/identifier.rs b/input/src/common/identifier.rs
index 35c74e30be..226e7fd9c7 100644
--- a/input/src/common/identifier.rs
+++ b/input/src/common/identifier.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::{span_into_string, Rule};
 
 use pest::Span;
diff --git a/input/src/common/line_end.rs b/input/src/common/line_end.rs
index ee34060bd6..45c4f29e99 100644
--- a/input/src/common/line_end.rs
+++ b/input/src/common/line_end.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/input/src/common/mod.rs b/input/src/common/mod.rs
index b284ece1f8..feca4d8fe4 100644
--- a/input/src/common/mod.rs
+++ b/input/src/common/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod eoi;
 pub use eoi::*;
 
diff --git a/input/src/definitions/definition.rs b/input/src/definitions/definition.rs
index 7f33591ba9..72a1bfb7d2 100644
--- a/input/src/definitions/definition.rs
+++ b/input/src/definitions/definition.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::LineEnd, expressions::Expression, parameters::Parameter};
 
 use pest::Span;
diff --git a/input/src/definitions/mod.rs b/input/src/definitions/mod.rs
index c4cce58786..8e4bb3d9ce 100644
--- a/input/src/definitions/mod.rs
+++ b/input/src/definitions/mod.rs
@@ -1,2 +1,18 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod definition;
 pub use definition::*;
diff --git a/input/src/errors/mod.rs b/input/src/errors/mod.rs
index 9d9164fa35..c60030f31f 100644
--- a/input/src/errors/mod.rs
+++ b/input/src/errors/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod parser;
 pub use parser::*;
 
diff --git a/input/src/errors/parser.rs b/input/src/errors/parser.rs
index d5ae505ae8..654bb8cee9 100644
--- a/input/src/errors/parser.rs
+++ b/input/src/errors/parser.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     errors::SyntaxError as InputSyntaxError,
diff --git a/input/src/errors/syntax.rs b/input/src/errors/syntax.rs
index 4bca70f5f6..ffcb97723c 100644
--- a/input/src/errors/syntax.rs
+++ b/input/src/errors/syntax.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest::error::Error;
diff --git a/input/src/expressions/array_initializer_expression.rs b/input/src/expressions/array_initializer_expression.rs
index 392afd1b49..b8ba714780 100644
--- a/input/src/expressions/array_initializer_expression.rs
+++ b/input/src/expressions/array_initializer_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, expressions::Expression, values::PositiveNumber};
 
 use pest::Span;
diff --git a/input/src/expressions/array_inline_expression.rs b/input/src/expressions/array_inline_expression.rs
index bb25e12721..daec4d1694 100644
--- a/input/src/expressions/array_inline_expression.rs
+++ b/input/src/expressions/array_inline_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, expressions::Expression};
 
 use pest::Span;
diff --git a/input/src/expressions/expression.rs b/input/src/expressions/expression.rs
index 798c70fec9..e533ffc93c 100644
--- a/input/src/expressions/expression.rs
+++ b/input/src/expressions/expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, expressions::*, values::Value};
 
 use pest::Span;
diff --git a/input/src/expressions/mod.rs b/input/src/expressions/mod.rs
index aa2a7723fe..1caedd92a3 100644
--- a/input/src/expressions/mod.rs
+++ b/input/src/expressions/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod array_initializer_expression;
 pub use array_initializer_expression::*;
 
diff --git a/input/src/expressions/tuple_expression.rs b/input/src/expressions/tuple_expression.rs
index 04ae9f0d82..7de1345d69 100644
--- a/input/src/expressions/tuple_expression.rs
+++ b/input/src/expressions/tuple_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, expressions::Expression};
 
 use pest::Span;
diff --git a/input/src/files/file.rs b/input/src/files/file.rs
index 8d2fdfa3bc..7032da4aa9 100644
--- a/input/src/files/file.rs
+++ b/input/src/files/file.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::EOI, files::TableOrSection};
 
 use pest::Span;
diff --git a/input/src/files/mod.rs b/input/src/files/mod.rs
index 1638d8b176..5c80e428e0 100644
--- a/input/src/files/mod.rs
+++ b/input/src/files/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod file;
 pub use file::*;
 
diff --git a/input/src/files/table_or_section.rs b/input/src/files/table_or_section.rs
index 071fa3e790..1c24b8fedf 100644
--- a/input/src/files/table_or_section.rs
+++ b/input/src/files/table_or_section.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, sections::Section, tables::Table};
 
 use pest_ast::FromPest;
diff --git a/input/src/lib.rs b/input/src/lib.rs
index 1deab65147..827f97c239 100644
--- a/input/src/lib.rs
+++ b/input/src/lib.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 extern crate pest_derive;
 #[macro_use]
diff --git a/input/src/parameters/mod.rs b/input/src/parameters/mod.rs
index cf55dbc6dd..c1ae3fad35 100644
--- a/input/src/parameters/mod.rs
+++ b/input/src/parameters/mod.rs
@@ -1,2 +1,18 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod parameter;
 pub use parameter::*;
diff --git a/input/src/parameters/parameter.rs b/input/src/parameters/parameter.rs
index 5b7be8046c..b04fe2e57c 100644
--- a/input/src/parameters/parameter.rs
+++ b/input/src/parameters/parameter.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, common::Identifier, types::Type};
 
 use pest::Span;
diff --git a/input/src/sections/header.rs b/input/src/sections/header.rs
index d5aa339251..c374691f2d 100644
--- a/input/src/sections/header.rs
+++ b/input/src/sections/header.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     common::Identifier,
diff --git a/input/src/sections/main_.rs b/input/src/sections/main_.rs
index 9f52418153..af2400b2d8 100644
--- a/input/src/sections/main_.rs
+++ b/input/src/sections/main_.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest::Span;
diff --git a/input/src/sections/mod.rs b/input/src/sections/mod.rs
index 8fd04e6ba3..f9dbbc8913 100644
--- a/input/src/sections/mod.rs
+++ b/input/src/sections/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod header;
 pub use header::*;
 
diff --git a/input/src/sections/record.rs b/input/src/sections/record.rs
index 2f67290130..e742061136 100644
--- a/input/src/sections/record.rs
+++ b/input/src/sections/record.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest::Span;
diff --git a/input/src/sections/registers.rs b/input/src/sections/registers.rs
index 8e11fde122..15a923b387 100644
--- a/input/src/sections/registers.rs
+++ b/input/src/sections/registers.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest::Span;
diff --git a/input/src/sections/section.rs b/input/src/sections/section.rs
index 0e43dd9778..d91089cca4 100644
--- a/input/src/sections/section.rs
+++ b/input/src/sections/section.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, definitions::Definition, sections::Header};
 
 use pest::Span;
diff --git a/input/src/sections/state.rs b/input/src/sections/state.rs
index 8063e4f8a9..c3dc5313c8 100644
--- a/input/src/sections/state.rs
+++ b/input/src/sections/state.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest::Span;
diff --git a/input/src/sections/state_leaf.rs b/input/src/sections/state_leaf.rs
index 932203f24c..4ad6c2aa3e 100644
--- a/input/src/sections/state_leaf.rs
+++ b/input/src/sections/state_leaf.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest::Span;
diff --git a/input/src/tables/mod.rs b/input/src/tables/mod.rs
index 089015621f..d2b77b3f3c 100644
--- a/input/src/tables/mod.rs
+++ b/input/src/tables/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod private;
 pub use private::*;
 
diff --git a/input/src/tables/private.rs b/input/src/tables/private.rs
index 1c1c86d44b..34593f5ce5 100644
--- a/input/src/tables/private.rs
+++ b/input/src/tables/private.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest::Span;
diff --git a/input/src/tables/public.rs b/input/src/tables/public.rs
index a16e567914..dc675e7ec7 100644
--- a/input/src/tables/public.rs
+++ b/input/src/tables/public.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest::Span;
diff --git a/input/src/tables/table.rs b/input/src/tables/table.rs
index e115c237ea..1aa3863aa7 100644
--- a/input/src/tables/table.rs
+++ b/input/src/tables/table.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, sections::Section, tables::Visibility};
 
 use pest::Span;
diff --git a/input/src/tables/visibility.rs b/input/src/tables/visibility.rs
index af2c93e2e4..dd8e7ef928 100644
--- a/input/src/tables/visibility.rs
+++ b/input/src/tables/visibility.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     tables::{Private, Public},
diff --git a/input/src/types/address_type.rs b/input/src/types/address_type.rs
index badbf38c10..d45fe1fe3e 100644
--- a/input/src/types/address_type.rs
+++ b/input/src/types/address_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/input/src/types/array_type.rs b/input/src/types/array_type.rs
index bf621ebd02..872656c3fc 100644
--- a/input/src/types/array_type.rs
+++ b/input/src/types/array_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::DataType, values::PositiveNumber};
 
 use pest::Span;
diff --git a/input/src/types/boolean_type.rs b/input/src/types/boolean_type.rs
index ce338e0447..0799f41acc 100644
--- a/input/src/types/boolean_type.rs
+++ b/input/src/types/boolean_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/input/src/types/data_type.rs b/input/src/types/data_type.rs
index d2694934e8..cfb96d5b6b 100644
--- a/input/src/types/data_type.rs
+++ b/input/src/types/data_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     types::{BooleanType, FieldType, GroupType, IntegerType},
diff --git a/input/src/types/field_type.rs b/input/src/types/field_type.rs
index 17fc1082ff..52bb665e79 100644
--- a/input/src/types/field_type.rs
+++ b/input/src/types/field_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/input/src/types/group_type.rs b/input/src/types/group_type.rs
index 6ffe8956fb..e73432a4b6 100644
--- a/input/src/types/group_type.rs
+++ b/input/src/types/group_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/input/src/types/integer_type.rs b/input/src/types/integer_type.rs
index 75ffdd2a62..876b1405ec 100644
--- a/input/src/types/integer_type.rs
+++ b/input/src/types/integer_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     types::{SignedIntegerType, UnsignedIntegerType},
diff --git a/input/src/types/mod.rs b/input/src/types/mod.rs
index 6a247be42b..4f6332590e 100644
--- a/input/src/types/mod.rs
+++ b/input/src/types/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod address_type;
 pub use address_type::*;
 
diff --git a/input/src/types/signed_integer_type.rs b/input/src/types/signed_integer_type.rs
index 03d6f36038..9273586fd7 100644
--- a/input/src/types/signed_integer_type.rs
+++ b/input/src/types/signed_integer_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/input/src/types/tuple_type.rs b/input/src/types/tuple_type.rs
index 6daad6cb1e..feca7e830a 100644
--- a/input/src/types/tuple_type.rs
+++ b/input/src/types/tuple_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::Type};
 
 use pest::Span;
diff --git a/input/src/types/type_.rs b/input/src/types/type_.rs
index d7ea2779e0..691d178f03 100644
--- a/input/src/types/type_.rs
+++ b/input/src/types/type_.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::*};
 
 use pest_ast::FromPest;
diff --git a/input/src/types/unsigned_integer_type.rs b/input/src/types/unsigned_integer_type.rs
index b50e1ff88e..1860b4a85b 100644
--- a/input/src/types/unsigned_integer_type.rs
+++ b/input/src/types/unsigned_integer_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::Rule;
 
 use pest_ast::FromPest;
diff --git a/input/src/values/address.rs b/input/src/values/address.rs
index 9e981b31b0..78b56ea02f 100644
--- a/input/src/values/address.rs
+++ b/input/src/values/address.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::{span_into_string, Rule};
 
 use pest::Span;
diff --git a/input/src/values/address_typed.rs b/input/src/values/address_typed.rs
index cbfb4b5100..ed987e10d9 100644
--- a/input/src/values/address_typed.rs
+++ b/input/src/values/address_typed.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::AddressType, values::address::Address};
 
 use pest::Span;
diff --git a/input/src/values/address_value.rs b/input/src/values/address_value.rs
index 05a3645945..694173d97f 100644
--- a/input/src/values/address_value.rs
+++ b/input/src/values/address_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     values::{Address, AddressTyped},
diff --git a/input/src/values/boolean_value.rs b/input/src/values/boolean_value.rs
index 4ca294b8c7..8a0b3d1a7d 100644
--- a/input/src/values/boolean_value.rs
+++ b/input/src/values/boolean_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::{span_into_string, Rule};
 
 use pest::Span;
diff --git a/input/src/values/field_value.rs b/input/src/values/field_value.rs
index a8f6b39337..6e0ecd6f48 100644
--- a/input/src/values/field_value.rs
+++ b/input/src/values/field_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::FieldType, values::NumberValue};
 
 use pest::Span;
diff --git a/input/src/values/group_coordinate.rs b/input/src/values/group_coordinate.rs
index 1592ad9fd8..b021547e11 100644
--- a/input/src/values/group_coordinate.rs
+++ b/input/src/values/group_coordinate.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, values::NumberValue};
 
 use pest::Span;
diff --git a/input/src/values/group_value.rs b/input/src/values/group_value.rs
index c37de3ffd5..945545147d 100644
--- a/input/src/values/group_value.rs
+++ b/input/src/values/group_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::GroupType, values::GroupCoordinate};
 
 use pest::Span;
diff --git a/input/src/values/integer_value.rs b/input/src/values/integer_value.rs
index 08ff98e8b3..3a81dad4fd 100644
--- a/input/src/values/integer_value.rs
+++ b/input/src/values/integer_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     values::{SignedIntegerValue, UnsignedIntegerValue},
diff --git a/input/src/values/mod.rs b/input/src/values/mod.rs
index f8ded05f4e..74bc4e00d5 100644
--- a/input/src/values/mod.rs
+++ b/input/src/values/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod address;
 pub use address::*;
 
diff --git a/input/src/values/negative_number.rs b/input/src/values/negative_number.rs
index 98d51c40a6..9d87d258f8 100644
--- a/input/src/values/negative_number.rs
+++ b/input/src/values/negative_number.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::{span_into_string, Rule};
 
 use pest::Span;
diff --git a/input/src/values/number_value.rs b/input/src/values/number_value.rs
index 89438c0471..b498bc5606 100644
--- a/input/src/values/number_value.rs
+++ b/input/src/values/number_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     values::{NegativeNumber, PositiveNumber},
diff --git a/input/src/values/positive_number.rs b/input/src/values/positive_number.rs
index e104eccc83..7477049cce 100644
--- a/input/src/values/positive_number.rs
+++ b/input/src/values/positive_number.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::ast::{span_into_string, Rule};
 
 use pest::Span;
diff --git a/input/src/values/signed_integer_value.rs b/input/src/values/signed_integer_value.rs
index ffa5c3bc7d..298b6d1c6b 100644
--- a/input/src/values/signed_integer_value.rs
+++ b/input/src/values/signed_integer_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::SignedIntegerType, values::NumberValue};
 
 use pest::Span;
diff --git a/input/src/values/unsigned_integer_value.rs b/input/src/values/unsigned_integer_value.rs
index 170ca087e6..50ff67ca9f 100644
--- a/input/src/values/unsigned_integer_value.rs
+++ b/input/src/values/unsigned_integer_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ast::Rule, types::UnsignedIntegerType, values::PositiveNumber};
 
 use pest::Span;
diff --git a/input/src/values/value.rs b/input/src/values/value.rs
index 482867305d..a46886ac12 100644
--- a/input/src/values/value.rs
+++ b/input/src/values/value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     ast::Rule,
     values::{BooleanValue, FieldValue, GroupValue, IntegerValue, NumberValue},
diff --git a/leo/cli.rs b/leo/cli.rs
index 0966689948..42f9b4683b 100644
--- a/leo/cli.rs
+++ b/leo/cli.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{cli_types::*, errors::CLIError, logger};
 
 use clap::{App, AppSettings, Arg, ArgMatches, SubCommand};
diff --git a/leo/cli_types.rs b/leo/cli_types.rs
index f5a22a6d2e..da7521e8d8 100644
--- a/leo/cli_types.rs
+++ b/leo/cli_types.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use clap::AppSettings;
 
 pub type NameType = &'static str;
diff --git a/leo/commands/add.rs b/leo/commands/add.rs
index 4d0aef6302..d6adc0a461 100644
--- a/leo/commands/add.rs
+++ b/leo/commands/add.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //
 // Usage:
 //
diff --git a/leo/commands/build.rs b/leo/commands/build.rs
index a0ff73bd38..e557563b52 100644
--- a/leo/commands/build.rs
+++ b/leo/commands/build.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     cli::*,
     cli_types::*,
diff --git a/leo/commands/clean.rs b/leo/commands/clean.rs
index 990db1ad3a..4722993965 100644
--- a/leo/commands/clean.rs
+++ b/leo/commands/clean.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{cli::*, cli_types::*, errors::CLIError};
 use leo_package::{
     outputs::{ChecksumFile, ProofFile, ProvingKeyFile, VerificationKeyFile},
diff --git a/leo/commands/deploy.rs b/leo/commands/deploy.rs
index 9c051bf609..1522590ec2 100644
--- a/leo/commands/deploy.rs
+++ b/leo/commands/deploy.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     cli::*,
     cli_types::*,
diff --git a/leo/commands/init.rs b/leo/commands/init.rs
index a4970ee5a5..92086bba40 100644
--- a/leo/commands/init.rs
+++ b/leo/commands/init.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     cli::*,
     cli_types::*,
diff --git a/leo/commands/lint.rs b/leo/commands/lint.rs
index 971281be45..f055bdd0cb 100644
--- a/leo/commands/lint.rs
+++ b/leo/commands/lint.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     cli::*,
     cli_types::*,
diff --git a/leo/commands/login.rs b/leo/commands/login.rs
index 113b3a6d31..396334b27a 100644
--- a/leo/commands/login.rs
+++ b/leo/commands/login.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //
 // Usage:
 //
diff --git a/leo/commands/mod.rs b/leo/commands/mod.rs
index c34c6b1735..b5c14e8b99 100644
--- a/leo/commands/mod.rs
+++ b/leo/commands/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod add;
 pub use self::add::*;
 
diff --git a/leo/commands/new.rs b/leo/commands/new.rs
index ffaa725b15..6880e85eb3 100644
--- a/leo/commands/new.rs
+++ b/leo/commands/new.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     cli::*,
     cli_types::*,
diff --git a/leo/commands/prove.rs b/leo/commands/prove.rs
index 2ffd75beec..eebb39347e 100644
--- a/leo/commands/prove.rs
+++ b/leo/commands/prove.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{cli::*, cli_types::*, commands::SetupCommand, errors::CLIError};
 use leo_package::{outputs::ProofFile, root::Manifest};
 
diff --git a/leo/commands/publish.rs b/leo/commands/publish.rs
index 56a313d3b2..6b92d8df9d 100644
--- a/leo/commands/publish.rs
+++ b/leo/commands/publish.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     cli::*,
     cli_types::*,
diff --git a/leo/commands/remove.rs b/leo/commands/remove.rs
index 9ae66b64f1..7abdbbbaa3 100644
--- a/leo/commands/remove.rs
+++ b/leo/commands/remove.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     cli::*,
     cli_types::*,
diff --git a/leo/commands/run.rs b/leo/commands/run.rs
index c0fbb5977a..a3931d77b2 100644
--- a/leo/commands/run.rs
+++ b/leo/commands/run.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{cli::*, cli_types::*, commands::ProveCommand, errors::CLIError};
 use leo_compiler::{compiler::Compiler, group::targets::edwards_bls12::EdwardsGroupType};
 
diff --git a/leo/commands/setup.rs b/leo/commands/setup.rs
index 0de60a0d7a..634374f7b2 100644
--- a/leo/commands/setup.rs
+++ b/leo/commands/setup.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     cli::*,
     cli_types::*,
diff --git a/leo/commands/test.rs b/leo/commands/test.rs
index ec998675b2..1b8e9a5168 100644
--- a/leo/commands/test.rs
+++ b/leo/commands/test.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     cli::*,
     cli_types::*,
diff --git a/leo/commands/watch.rs b/leo/commands/watch.rs
index dfb079bf87..f4c07e298d 100644
--- a/leo/commands/watch.rs
+++ b/leo/commands/watch.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{cli::CLI, cli_types::*, commands::BuildCommand, errors::CLIError};
 use clap::ArgMatches;
 use notify::{watcher, DebouncedEvent, RecursiveMode, Watcher};
diff --git a/leo/credentials.rs b/leo/credentials.rs
index 3c0c8bfcfd..dd50041d1e 100644
--- a/leo/credentials.rs
+++ b/leo/credentials.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use dirs::home_dir;
 use lazy_static::lazy_static;
 use std::{
diff --git a/leo/errors/cli.rs b/leo/errors/cli.rs
index 99256fa69a..8cc8783ebd 100644
--- a/leo/errors/cli.rs
+++ b/leo/errors/cli.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::errors::*;
 use leo_package::errors::*;
 
diff --git a/leo/errors/commands/add.rs b/leo/errors/commands/add.rs
index 15957ca1ff..64d0309436 100644
--- a/leo/errors/commands/add.rs
+++ b/leo/errors/commands/add.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::ffi::OsString;
 
 #[derive(Debug, Error)]
diff --git a/leo/errors/commands/build.rs b/leo/errors/commands/build.rs
index 55958bd49d..0c7fbb39e0 100644
--- a/leo/errors/commands/build.rs
+++ b/leo/errors/commands/build.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_package::errors::ManifestError;
 
 use std::ffi::OsString;
diff --git a/leo/errors/commands/init.rs b/leo/errors/commands/init.rs
index dca7e3f569..95552cb02e 100644
--- a/leo/errors/commands/init.rs
+++ b/leo/errors/commands/init.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_package::errors::ManifestError;
 
 use std::{ffi::OsString, io};
diff --git a/leo/errors/commands/login.rs b/leo/errors/commands/login.rs
index 7db339c843..4cc57315af 100644
--- a/leo/errors/commands/login.rs
+++ b/leo/errors/commands/login.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::ffi::OsString;
 
 #[derive(Debug, Error)]
diff --git a/leo/errors/commands/mod.rs b/leo/errors/commands/mod.rs
index 146575a0b1..dba067d1bc 100644
--- a/leo/errors/commands/mod.rs
+++ b/leo/errors/commands/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod add;
 pub use self::add::*;
 
diff --git a/leo/errors/commands/new.rs b/leo/errors/commands/new.rs
index f97b21a198..fd816f75db 100644
--- a/leo/errors/commands/new.rs
+++ b/leo/errors/commands/new.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_package::errors::ManifestError;
 
 use std::{ffi::OsString, io};
diff --git a/leo/errors/commands/publish.rs b/leo/errors/commands/publish.rs
index 6ac376ce40..cd67e7fc0e 100644
--- a/leo/errors/commands/publish.rs
+++ b/leo/errors/commands/publish.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::ffi::OsString;
 
 #[derive(Debug, Error)]
diff --git a/leo/errors/commands/run.rs b/leo/errors/commands/run.rs
index 345857a0bd..385f29c34d 100644
--- a/leo/errors/commands/run.rs
+++ b/leo/errors/commands/run.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_package::errors::ManifestError;
 
 use std::ffi::OsString;
diff --git a/leo/errors/commands/test.rs b/leo/errors/commands/test.rs
index 64761d43e3..cd293013ed 100644
--- a/leo/errors/commands/test.rs
+++ b/leo/errors/commands/test.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_package::errors::ManifestError;
 
 use std::ffi::OsString;
diff --git a/leo/errors/mod.rs b/leo/errors/mod.rs
index 6bc9bfbad5..bc7859ca5d 100644
--- a/leo/errors/mod.rs
+++ b/leo/errors/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod cli;
 pub use self::cli::*;
 
diff --git a/leo/lib.rs b/leo/lib.rs
index b1568efb37..801cd357a5 100644
--- a/leo/lib.rs
+++ b/leo/lib.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 extern crate thiserror;
 
diff --git a/leo/logger.rs b/leo/logger.rs
index 98c48c34d7..421cb35c33 100644
--- a/leo/logger.rs
+++ b/leo/logger.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use colored::Colorize;
 use std::io::Write;
 
diff --git a/leo/main.rs b/leo/main.rs
index 7cbab7f433..27a08d90da 100644
--- a/leo/main.rs
+++ b/leo/main.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo::{cli::*, commands::*, errors::CLIError};
 
 use clap::{App, AppSettings, Arg};
diff --git a/leo/synthesizer/circuit_synthesizer.rs b/leo/synthesizer/circuit_synthesizer.rs
index 6ab1e18cbe..0bdd6e7897 100644
--- a/leo/synthesizer/circuit_synthesizer.rs
+++ b/leo/synthesizer/circuit_synthesizer.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use snarkos_errors::gadgets::SynthesisError;
 use snarkos_models::{
     curves::{Field, PairingEngine},
diff --git a/leo/synthesizer/mod.rs b/leo/synthesizer/mod.rs
index c4174cc275..a86b333e7f 100644
--- a/leo/synthesizer/mod.rs
+++ b/leo/synthesizer/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod circuit_synthesizer;
 pub use self::circuit_synthesizer::*;
 
diff --git a/leo/synthesizer/serialized_circuit.rs b/leo/synthesizer/serialized_circuit.rs
index 55c9bd9c13..ae1293d191 100644
--- a/leo/synthesizer/serialized_circuit.rs
+++ b/leo/synthesizer/serialized_circuit.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::synthesizer::{CircuitSynthesizer, SerializedField, SerializedIndex};
 
 use snarkos_curves::bls12_377::Bls12_377;
diff --git a/leo/synthesizer/serialized_field.rs b/leo/synthesizer/serialized_field.rs
index 9ed3a91e27..80c25d8471 100644
--- a/leo/synthesizer/serialized_field.rs
+++ b/leo/synthesizer/serialized_field.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use snarkos_errors::curves::FieldError;
 use snarkos_models::curves::{Field, Fp256, Fp256Parameters};
 
diff --git a/leo/synthesizer/serialized_index.rs b/leo/synthesizer/serialized_index.rs
index c77586ce6c..88138c3e5b 100644
--- a/leo/synthesizer/serialized_index.rs
+++ b/leo/synthesizer/serialized_index.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use snarkos_models::gadgets::r1cs::Index;
 
 use serde::{Deserialize, Serialize};
diff --git a/linter/src/main.rs b/linter/src/main.rs
index e7a11a969c..b40b180fce 100644
--- a/linter/src/main.rs
+++ b/linter/src/main.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 fn main() {
     println!("Hello, world!");
 }
diff --git a/package/src/errors/imports/directory.rs b/package/src/errors/imports/directory.rs
index 7dd2114fc0..8d1f8ded19 100644
--- a/package/src/errors/imports/directory.rs
+++ b/package/src/errors/imports/directory.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::{ffi::OsString, fs::FileType, io};
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/imports/mod.rs b/package/src/errors/imports/mod.rs
index c578ea2ef7..e2aec2333d 100644
--- a/package/src/errors/imports/mod.rs
+++ b/package/src/errors/imports/mod.rs
@@ -1,2 +1,18 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod directory;
 pub use directory::*;
diff --git a/package/src/errors/inputs/directory.rs b/package/src/errors/inputs/directory.rs
index b18f1f1292..b54c091243 100644
--- a/package/src/errors/inputs/directory.rs
+++ b/package/src/errors/inputs/directory.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{InputFileError, StateFileError};
 
 use std::{ffi::OsString, fs::FileType, io};
diff --git a/package/src/errors/inputs/input.rs b/package/src/errors/inputs/input.rs
index 82f51e4592..93ff2e44d1 100644
--- a/package/src/errors/inputs/input.rs
+++ b/package/src/errors/inputs/input.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::{io, path::PathBuf};
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/inputs/mod.rs b/package/src/errors/inputs/mod.rs
index 504289bc48..93d930fa71 100644
--- a/package/src/errors/inputs/mod.rs
+++ b/package/src/errors/inputs/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod directory;
 pub use directory::*;
 
diff --git a/package/src/errors/inputs/state.rs b/package/src/errors/inputs/state.rs
index a0cd41d28a..ea372555a9 100644
--- a/package/src/errors/inputs/state.rs
+++ b/package/src/errors/inputs/state.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::{io, path::PathBuf};
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/mod.rs b/package/src/errors/mod.rs
index 51521e4ed4..84b6620f73 100644
--- a/package/src/errors/mod.rs
+++ b/package/src/errors/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod imports;
 pub use imports::*;
 
diff --git a/package/src/errors/outputs/checksum.rs b/package/src/errors/outputs/checksum.rs
index 65fe78c9e6..d3bd8c5dfc 100644
--- a/package/src/errors/outputs/checksum.rs
+++ b/package/src/errors/outputs/checksum.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::{io, path::PathBuf};
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/outputs/circuit.rs b/package/src/errors/outputs/circuit.rs
index 75287299f0..19fd1553e3 100644
--- a/package/src/errors/outputs/circuit.rs
+++ b/package/src/errors/outputs/circuit.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::{io, path::PathBuf};
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/outputs/directory.rs b/package/src/errors/outputs/directory.rs
index 7742fff615..8fecb31e15 100644
--- a/package/src/errors/outputs/directory.rs
+++ b/package/src/errors/outputs/directory.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::{ffi::OsString, fs::FileType, io};
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/outputs/mod.rs b/package/src/errors/outputs/mod.rs
index 022e413f2a..6a6d806842 100644
--- a/package/src/errors/outputs/mod.rs
+++ b/package/src/errors/outputs/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod circuit;
 pub use circuit::*;
 
diff --git a/package/src/errors/outputs/proof.rs b/package/src/errors/outputs/proof.rs
index e0e8b1b022..7dad60fdcc 100644
--- a/package/src/errors/outputs/proof.rs
+++ b/package/src/errors/outputs/proof.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::{io, path::PathBuf};
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/outputs/proving_key.rs b/package/src/errors/outputs/proving_key.rs
index ef9481551a..d8643bc683 100644
--- a/package/src/errors/outputs/proving_key.rs
+++ b/package/src/errors/outputs/proving_key.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::{io, path::PathBuf};
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/outputs/verification_key.rs b/package/src/errors/outputs/verification_key.rs
index ffa3d34a61..7a824496c7 100644
--- a/package/src/errors/outputs/verification_key.rs
+++ b/package/src/errors/outputs/verification_key.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::{io, path::PathBuf};
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/root/gitignore.rs b/package/src/errors/root/gitignore.rs
index 4b1da2af73..449ce0f7ce 100644
--- a/package/src/errors/root/gitignore.rs
+++ b/package/src/errors/root/gitignore.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::io;
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/root/manifest.rs b/package/src/errors/root/manifest.rs
index 6ffe9d4a8d..10c0a5fd8f 100644
--- a/package/src/errors/root/manifest.rs
+++ b/package/src/errors/root/manifest.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::io;
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/root/mod.rs b/package/src/errors/root/mod.rs
index dfe9123776..6ed3f4bc07 100644
--- a/package/src/errors/root/mod.rs
+++ b/package/src/errors/root/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod gitignore;
 pub use self::gitignore::*;
 
diff --git a/package/src/errors/root/readme.rs b/package/src/errors/root/readme.rs
index 70d133638f..c2fc7c4e37 100644
--- a/package/src/errors/root/readme.rs
+++ b/package/src/errors/root/readme.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::io;
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/root/zip.rs b/package/src/errors/root/zip.rs
index 1cf20e984b..c3c8c5c7c2 100644
--- a/package/src/errors/root/zip.rs
+++ b/package/src/errors/root/zip.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::{io, path::PathBuf};
 use walkdir::Error as WalkDirError;
 use zip::result::ZipError;
diff --git a/package/src/errors/source/directory.rs b/package/src/errors/source/directory.rs
index 984969e1cc..2913162223 100644
--- a/package/src/errors/source/directory.rs
+++ b/package/src/errors/source/directory.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::{ffi::OsString, fs::FileType, io};
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/source/lib.rs b/package/src/errors/source/lib.rs
index a95bc98075..2560ae4d8e 100644
--- a/package/src/errors/source/lib.rs
+++ b/package/src/errors/source/lib.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::io;
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/source/main.rs b/package/src/errors/source/main.rs
index b11527bf95..816a2b01a8 100644
--- a/package/src/errors/source/main.rs
+++ b/package/src/errors/source/main.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::io;
 
 #[derive(Debug, Error)]
diff --git a/package/src/errors/source/mod.rs b/package/src/errors/source/mod.rs
index e1c58a866b..35f5b284ac 100644
--- a/package/src/errors/source/mod.rs
+++ b/package/src/errors/source/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod directory;
 pub use directory::*;
 
diff --git a/package/src/imports/directory.rs b/package/src/imports/directory.rs
index 17bc311e06..d9f5be5868 100644
--- a/package/src/imports/directory.rs
+++ b/package/src/imports/directory.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::errors::ImportsDirectoryError;
 
 use std::{fs, path::PathBuf};
diff --git a/package/src/imports/mod.rs b/package/src/imports/mod.rs
index c578ea2ef7..e2aec2333d 100644
--- a/package/src/imports/mod.rs
+++ b/package/src/imports/mod.rs
@@ -1,2 +1,18 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod directory;
 pub use directory::*;
diff --git a/package/src/inputs/directory.rs b/package/src/inputs/directory.rs
index 4dc70b9e28..dd588a51a5 100644
--- a/package/src/inputs/directory.rs
+++ b/package/src/inputs/directory.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::errors::InputsDirectoryError;
 
 use std::{fs, fs::ReadDir, path::PathBuf};
diff --git a/package/src/inputs/input.rs b/package/src/inputs/input.rs
index ebd4d993e7..06415b0e51 100644
--- a/package/src/inputs/input.rs
+++ b/package/src/inputs/input.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The `program.in` file.
 
 use crate::{errors::InputFileError, inputs::INPUTS_DIRECTORY_NAME};
diff --git a/package/src/inputs/mod.rs b/package/src/inputs/mod.rs
index befb73256e..963f0e1e22 100644
--- a/package/src/inputs/mod.rs
+++ b/package/src/inputs/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod directory;
 pub use directory::*;
 
diff --git a/package/src/inputs/pairs.rs b/package/src/inputs/pairs.rs
index b41947cc46..6c05ddcccb 100644
--- a/package/src/inputs/pairs.rs
+++ b/package/src/inputs/pairs.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     inputs::{InputFile, InputsDirectory, StateFile, INPUT_FILE_EXTENSION, STATE_FILE_EXTENSION},
     InputsDirectoryError,
diff --git a/package/src/inputs/state.rs b/package/src/inputs/state.rs
index 29e55e993c..ea2fa40f8f 100644
--- a/package/src/inputs/state.rs
+++ b/package/src/inputs/state.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The `program.state` file.
 
 use crate::{errors::StateFileError, inputs::INPUTS_DIRECTORY_NAME};
diff --git a/package/src/lib.rs b/package/src/lib.rs
index 6b6920ce7a..01b7a4d290 100644
--- a/package/src/lib.rs
+++ b/package/src/lib.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 extern crate thiserror;
 
diff --git a/package/src/outputs/checksum.rs b/package/src/outputs/checksum.rs
index e55982f4ac..021078162d 100644
--- a/package/src/outputs/checksum.rs
+++ b/package/src/outputs/checksum.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The build checksum file.
 
 use crate::{errors::ChecksumFileError, outputs::OUTPUTS_DIRECTORY_NAME};
diff --git a/package/src/outputs/circuit.rs b/package/src/outputs/circuit.rs
index 00d4312877..b32aee442f 100644
--- a/package/src/outputs/circuit.rs
+++ b/package/src/outputs/circuit.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The serialized circuit output file.
 
 use crate::{errors::CircuitFileError, outputs::OUTPUTS_DIRECTORY_NAME};
diff --git a/package/src/outputs/directory.rs b/package/src/outputs/directory.rs
index 575132bd0e..f54c12bf70 100644
--- a/package/src/outputs/directory.rs
+++ b/package/src/outputs/directory.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::errors::OutputsDirectoryError;
 
 use std::{fs, path::PathBuf};
diff --git a/package/src/outputs/mod.rs b/package/src/outputs/mod.rs
index 30bd5d58d1..7dccb07d83 100644
--- a/package/src/outputs/mod.rs
+++ b/package/src/outputs/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod circuit;
 pub use self::circuit::*;
 
diff --git a/package/src/outputs/proof.rs b/package/src/outputs/proof.rs
index 0095ef1c67..4d0a41482f 100644
--- a/package/src/outputs/proof.rs
+++ b/package/src/outputs/proof.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The proof file.
 
 use crate::{errors::ProofFileError, outputs::OUTPUTS_DIRECTORY_NAME};
diff --git a/package/src/outputs/proving_key.rs b/package/src/outputs/proving_key.rs
index 2914479785..03fd71f157 100644
--- a/package/src/outputs/proving_key.rs
+++ b/package/src/outputs/proving_key.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The proving key file.
 
 use crate::{errors::ProvingKeyFileError, outputs::OUTPUTS_DIRECTORY_NAME};
diff --git a/package/src/outputs/verification_key.rs b/package/src/outputs/verification_key.rs
index 52fc83f9a9..83c9913b56 100644
--- a/package/src/outputs/verification_key.rs
+++ b/package/src/outputs/verification_key.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The verification key file.
 
 use crate::{errors::VerificationKeyFileError, outputs::OUTPUTS_DIRECTORY_NAME};
diff --git a/package/src/root/gitignore.rs b/package/src/root/gitignore.rs
index ae9be67cfd..9ecb3f7adc 100644
--- a/package/src/root/gitignore.rs
+++ b/package/src/root/gitignore.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The `.gitignore` file.
 
 use crate::errors::GitignoreError;
diff --git a/package/src/root/manifest.rs b/package/src/root/manifest.rs
index c4caf4e171..57295a7bb7 100644
--- a/package/src/root/manifest.rs
+++ b/package/src/root/manifest.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::errors::ManifestError;
 
 use serde::Deserialize;
diff --git a/package/src/root/mod.rs b/package/src/root/mod.rs
index dfe9123776..6ed3f4bc07 100644
--- a/package/src/root/mod.rs
+++ b/package/src/root/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod gitignore;
 pub use self::gitignore::*;
 
diff --git a/package/src/root/readme.rs b/package/src/root/readme.rs
index aea6ec8917..f59adfaafd 100644
--- a/package/src/root/readme.rs
+++ b/package/src/root/readme.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The `README.md` file.
 
 use crate::errors::READMEError;
diff --git a/package/src/root/zip.rs b/package/src/root/zip.rs
index 30acdf3d4e..2cda680d26 100644
--- a/package/src/root/zip.rs
+++ b/package/src/root/zip.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The program package zip file.
 
 use crate::{
diff --git a/package/src/source/directory.rs b/package/src/source/directory.rs
index 197adff93d..2c79018270 100644
--- a/package/src/source/directory.rs
+++ b/package/src/source/directory.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::errors::SourceDirectoryError;
 
 use std::{fs, path::PathBuf};
diff --git a/package/src/source/lib.rs b/package/src/source/lib.rs
index 1a43c2c0b9..426822a4f9 100644
--- a/package/src/source/lib.rs
+++ b/package/src/source/lib.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The `lib.leo` file.
 
 use crate::{errors::LibFileError, source::directory::SOURCE_DIRECTORY_NAME};
diff --git a/package/src/source/main.rs b/package/src/source/main.rs
index 88046c3e7a..2fd5faf6e9 100644
--- a/package/src/source/main.rs
+++ b/package/src/source/main.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The `main.leo` file.
 
 use crate::{errors::MainFileError, source::directory::SOURCE_DIRECTORY_NAME};
diff --git a/package/src/source/mod.rs b/package/src/source/mod.rs
index e1c58a866b..35f5b284ac 100644
--- a/package/src/source/mod.rs
+++ b/package/src/source/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod directory;
 pub use directory::*;
 
diff --git a/state/src/errors/dpc_record_values.rs b/state/src/errors/dpc_record_values.rs
index f659b134b0..39aa9c558e 100644
--- a/state/src/errors/dpc_record_values.rs
+++ b/state/src/errors/dpc_record_values.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::InputValueError;
 
 use snarkos_errors::objects::account::AccountError;
diff --git a/state/src/errors/input_value.rs b/state/src/errors/input_value.rs
index 1504d0ebef..2b91fa921a 100644
--- a/state/src/errors/input_value.rs
+++ b/state/src/errors/input_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use std::num::ParseIntError;
 
 #[derive(Debug, Error)]
diff --git a/state/src/errors/local_data_commitment.rs b/state/src/errors/local_data_commitment.rs
index ecdc2b8c18..6f3c954cb1 100644
--- a/state/src/errors/local_data_commitment.rs
+++ b/state/src/errors/local_data_commitment.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{RecordVerificationError, StateLeafValuesError, StateValuesError};
 
 use snarkos_errors::algorithms::{CommitmentError, MerkleError};
diff --git a/state/src/errors/mod.rs b/state/src/errors/mod.rs
index fd5b2ade5a..f9a717fc71 100644
--- a/state/src/errors/mod.rs
+++ b/state/src/errors/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod dpc_record_values;
 pub use self::dpc_record_values::*;
 
diff --git a/state/src/errors/record_commitment.rs b/state/src/errors/record_commitment.rs
index a00bb8eead..3ca813f277 100644
--- a/state/src/errors/record_commitment.rs
+++ b/state/src/errors/record_commitment.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::DPCRecordValuesError;
 
 use snarkos_errors::algorithms::CommitmentError;
diff --git a/state/src/errors/state_leaf_values.rs b/state/src/errors/state_leaf_values.rs
index b14620eb89..75f19797f8 100644
--- a/state/src/errors/state_leaf_values.rs
+++ b/state/src/errors/state_leaf_values.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::InputValueError;
 
 use std::{num::ParseIntError, str::ParseBoolError};
diff --git a/state/src/errors/state_values.rs b/state/src/errors/state_values.rs
index 72b47c51bc..8f29ed9968 100644
--- a/state/src/errors/state_values.rs
+++ b/state/src/errors/state_values.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::InputValueError;
 
 use std::{num::ParseIntError, str::ParseBoolError};
diff --git a/state/src/lib.rs b/state/src/lib.rs
index 40cfd206e8..639457e0f3 100644
--- a/state/src/lib.rs
+++ b/state/src/lib.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 extern crate thiserror;
 
diff --git a/state/src/local_data_commitment/local_data_commitment.rs b/state/src/local_data_commitment/local_data_commitment.rs
index 53a84b8149..6a8f2906b3 100644
--- a/state/src/local_data_commitment/local_data_commitment.rs
+++ b/state/src/local_data_commitment/local_data_commitment.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{verify_record_commitment, LocalDataVerificationError, StateLeafValues, StateValues};
 use leo_typed::Input as TypedInput;
 
diff --git a/state/src/local_data_commitment/mod.rs b/state/src/local_data_commitment/mod.rs
index 77a5949d51..4c6f19230d 100644
--- a/state/src/local_data_commitment/mod.rs
+++ b/state/src/local_data_commitment/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod state_values;
 pub use self::state_values::*;
 
diff --git a/state/src/local_data_commitment/state_leaf_values.rs b/state/src/local_data_commitment/state_leaf_values.rs
index b52badd1da..f7ca617ba4 100644
--- a/state/src/local_data_commitment/state_leaf_values.rs
+++ b/state/src/local_data_commitment/state_leaf_values.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{find_input, input_to_integer_string, input_to_u8_vec, StateLeafValuesError};
 use leo_typed::StateLeaf as TypedStateLeaf;
 
diff --git a/state/src/local_data_commitment/state_values.rs b/state/src/local_data_commitment/state_values.rs
index 5a71e19395..7fbba3dd6e 100644
--- a/state/src/local_data_commitment/state_values.rs
+++ b/state/src/local_data_commitment/state_values.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{find_input, input_to_integer_string, input_to_u8_vec, StateValuesError};
 use leo_typed::State as TypedState;
 
diff --git a/state/src/record_commitment/dpc_record_values.rs b/state/src/record_commitment/dpc_record_values.rs
index 986eaee90d..a29e69414a 100644
--- a/state/src/record_commitment/dpc_record_values.rs
+++ b/state/src/record_commitment/dpc_record_values.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{utilities::*, DPCRecordValuesError};
 use leo_typed::Record as TypedRecord;
 
diff --git a/state/src/record_commitment/mod.rs b/state/src/record_commitment/mod.rs
index 9d2f688f6e..69adaa0da6 100644
--- a/state/src/record_commitment/mod.rs
+++ b/state/src/record_commitment/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod dpc_record_values;
 pub use self::dpc_record_values::*;
 
diff --git a/state/src/record_commitment/record_commitment.rs b/state/src/record_commitment/record_commitment.rs
index 55493e874f..1908c5a3da 100644
--- a/state/src/record_commitment/record_commitment.rs
+++ b/state/src/record_commitment/record_commitment.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{DPCRecordValues, RecordVerificationError};
 use leo_typed::Record as TypedRecord;
 
diff --git a/state/src/utilities/input_value.rs b/state/src/utilities/input_value.rs
index e453093d8f..c734a47824 100644
--- a/state/src/utilities/input_value.rs
+++ b/state/src/utilities/input_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::InputValueError;
 use leo_typed::{InputValue, Parameter};
 
diff --git a/state/src/utilities/mod.rs b/state/src/utilities/mod.rs
index 5166631852..e4668829a0 100644
--- a/state/src/utilities/mod.rs
+++ b/state/src/utilities/mod.rs
@@ -1,2 +1,18 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod input_value;
 pub use self::input_value::*;
diff --git a/state/tests/mod.rs b/state/tests/mod.rs
index 3f3fd2339d..5ecc95c701 100644
--- a/state/tests/mod.rs
+++ b/state/tests/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 mod test_verify_local_data_commitment;
 
 mod test_verify_record_commitment;
diff --git a/state/tests/test_verify_local_data_commitment.rs b/state/tests/test_verify_local_data_commitment.rs
index 5a42e77865..6f15ae7c6c 100644
--- a/state/tests/test_verify_local_data_commitment.rs
+++ b/state/tests/test_verify_local_data_commitment.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_input::LeoInputParser;
 use leo_state::verify_local_data_commitment;
 use leo_typed::Input;
diff --git a/state/tests/test_verify_record_commitment.rs b/state/tests/test_verify_record_commitment.rs
index e7bde411eb..6c031a5b75 100644
--- a/state/tests/test_verify_record_commitment.rs
+++ b/state/tests/test_verify_record_commitment.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_input::LeoInputParser;
 use leo_state::verify_record_commitment;
 use leo_typed::Input;
diff --git a/typed/benches/typed_ast.rs b/typed/benches/typed_ast.rs
index 6086f9594f..a38aa47238 100644
--- a/typed/benches/typed_ast.rs
+++ b/typed/benches/typed_ast.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_ast::{errors::ParserError, files::File, LeoAst};
 use leo_typed::LeoTypedAst;
 
diff --git a/typed/src/annotation.rs b/typed/src/annotation.rs
index 761dea19e3..3c1b66ee39 100644
--- a/typed/src/annotation.rs
+++ b/typed/src/annotation.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Circuit, Function, Identifier, Import, InputVariable, TestFunction};
 use leo_ast::{
     annotations::{Annotation, AnnotationArguments, AnnotationName},
diff --git a/typed/src/circuits/circuit.rs b/typed/src/circuits/circuit.rs
index d49d7de5e4..512feaa491 100644
--- a/typed/src/circuits/circuit.rs
+++ b/typed/src/circuits/circuit.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{CircuitMember, Identifier};
 use leo_ast::circuits::Circuit as AstCircuit;
 
diff --git a/typed/src/circuits/circuit_field_definition.rs b/typed/src/circuits/circuit_field_definition.rs
index 38582efef2..ffd99236a6 100644
--- a/typed/src/circuits/circuit_field_definition.rs
+++ b/typed/src/circuits/circuit_field_definition.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Expression, Identifier};
 use leo_ast::circuits::CircuitField;
 
diff --git a/typed/src/circuits/circuit_member.rs b/typed/src/circuits/circuit_member.rs
index dda39dd3ee..54d170be33 100644
--- a/typed/src/circuits/circuit_member.rs
+++ b/typed/src/circuits/circuit_member.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Function, Identifier, Type};
 use leo_ast::circuits::{
     CircuitFieldDefinition as AstCircuitFieldDefinition,
diff --git a/typed/src/circuits/mod.rs b/typed/src/circuits/mod.rs
index 7531150186..f191d6485c 100644
--- a/typed/src/circuits/mod.rs
+++ b/typed/src/circuits/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod circuit;
 pub use circuit::*;
 
diff --git a/typed/src/common/assignee.rs b/typed/src/common/assignee.rs
index 05f7b97a2e..8ac62bd713 100644
--- a/typed/src/common/assignee.rs
+++ b/typed/src/common/assignee.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Expression, Identifier, RangeOrExpression};
 use leo_ast::{
     access::AssigneeAccess as AstAssigneeAccess,
diff --git a/typed/src/common/declare.rs b/typed/src/common/declare.rs
index 12930d32d6..4fb9d28d85 100644
--- a/typed/src/common/declare.rs
+++ b/typed/src/common/declare.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_ast::common::Declare as AstDeclare;
 
 use serde::{Deserialize, Serialize};
diff --git a/typed/src/common/identifier.rs b/typed/src/common/identifier.rs
index 777e404a4d..79412e8f95 100644
--- a/typed/src/common/identifier.rs
+++ b/typed/src/common/identifier.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::Span;
 use leo_ast::{
     annotations::AnnotationArgument,
diff --git a/typed/src/common/mod.rs b/typed/src/common/mod.rs
index 50bb761460..9187f2e653 100644
--- a/typed/src/common/mod.rs
+++ b/typed/src/common/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod assignee;
 pub use assignee::*;
 
diff --git a/typed/src/common/range_or_expression.rs b/typed/src/common/range_or_expression.rs
index 0b78855705..3f3d8b998f 100644
--- a/typed/src/common/range_or_expression.rs
+++ b/typed/src/common/range_or_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::Expression;
 use leo_ast::common::RangeOrExpression as AstRangeOrExpression;
 
diff --git a/typed/src/common/span.rs b/typed/src/common/span.rs
index cc62e32796..a97510fe91 100644
--- a/typed/src/common/span.rs
+++ b/typed/src/common/span.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use pest::{Position, Span as AstSpan};
 use serde::{Deserialize, Serialize};
 
diff --git a/typed/src/common/spread_or_expression.rs b/typed/src/common/spread_or_expression.rs
index 79dd1c2dda..dd8fb3bc67 100644
--- a/typed/src/common/spread_or_expression.rs
+++ b/typed/src/common/spread_or_expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::Expression;
 use leo_ast::common::SpreadOrExpression as AstSpreadOrExpression;
 
diff --git a/typed/src/common/variable_name.rs b/typed/src/common/variable_name.rs
index 228a24091e..ac93f2dc60 100644
--- a/typed/src/common/variable_name.rs
+++ b/typed/src/common/variable_name.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::common::{Identifier, Span};
 use leo_ast::common::VariableName as AstVariableName;
 
diff --git a/typed/src/common/variables.rs b/typed/src/common/variables.rs
index 13fdbc9c64..2f9d877358 100644
--- a/typed/src/common/variables.rs
+++ b/typed/src/common/variables.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Type, VariableName};
 use leo_ast::common::Variables as AstVariables;
 
diff --git a/typed/src/errors/error.rs b/typed/src/errors/error.rs
index 6cc33969b4..31b575b9af 100644
--- a/typed/src/errors/error.rs
+++ b/typed/src/errors/error.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::Span;
 
 use std::{fmt, path::PathBuf};
diff --git a/typed/src/errors/mod.rs b/typed/src/errors/mod.rs
index 954dc9fe34..d76128b38a 100644
--- a/typed/src/errors/mod.rs
+++ b/typed/src/errors/mod.rs
@@ -1,2 +1,18 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod error;
 pub use error::*;
diff --git a/typed/src/expression.rs b/typed/src/expression.rs
index beed6ee8b5..2d7bfceada 100644
--- a/typed/src/expression.rs
+++ b/typed/src/expression.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{CircuitFieldDefinition, GroupValue, Identifier, IntegerType, RangeOrExpression, Span, SpreadOrExpression};
 use leo_ast::{
     access::{Access, AssigneeAccess},
diff --git a/typed/src/functions/function.rs b/typed/src/functions/function.rs
index 964058e152..4f52da175d 100644
--- a/typed/src/functions/function.rs
+++ b/typed/src/functions/function.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Identifier, InputVariable, Span, Statement, Type};
 use leo_ast::functions::Function as AstFunction;
 
diff --git a/typed/src/functions/input/function_input.rs b/typed/src/functions/input/function_input.rs
index e2f49cad21..6f60906d59 100644
--- a/typed/src/functions/input/function_input.rs
+++ b/typed/src/functions/input/function_input.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Identifier, Span, Type};
 use leo_ast::functions::FunctionInput as AstFunctionInput;
 
diff --git a/typed/src/functions/input/input_variable.rs b/typed/src/functions/input/input_variable.rs
index 956dcae727..b3032d8b1b 100644
--- a/typed/src/functions/input/input_variable.rs
+++ b/typed/src/functions/input/input_variable.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{FunctionInput, Identifier, Span};
 use leo_ast::functions::input::Input as AstInput;
 
diff --git a/typed/src/functions/input/mod.rs b/typed/src/functions/input/mod.rs
index 0a3a8455f7..d673bea746 100644
--- a/typed/src/functions/input/mod.rs
+++ b/typed/src/functions/input/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod function_input;
 pub use function_input::*;
 
diff --git a/typed/src/functions/mod.rs b/typed/src/functions/mod.rs
index 376bb34270..bb15f47eb9 100644
--- a/typed/src/functions/mod.rs
+++ b/typed/src/functions/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod function;
 pub use function::*;
 
diff --git a/typed/src/functions/test_function.rs b/typed/src/functions/test_function.rs
index f82344afc2..d4d2fec220 100644
--- a/typed/src/functions/test_function.rs
+++ b/typed/src/functions/test_function.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Function, Identifier};
 use leo_ast::functions::TestFunction as AstTestFunction;
 
diff --git a/typed/src/groups/group_coordinate.rs b/typed/src/groups/group_coordinate.rs
index 9475a7c4eb..8b84d950e2 100644
--- a/typed/src/groups/group_coordinate.rs
+++ b/typed/src/groups/group_coordinate.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::common::span::Span;
 use leo_ast::values::{
     GroupCoordinate as AstGroupCoordinate,
diff --git a/typed/src/groups/group_value.rs b/typed/src/groups/group_value.rs
index 8c54ef4939..e3412ccb08 100644
--- a/typed/src/groups/group_value.rs
+++ b/typed/src/groups/group_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{common::span::Span, groups::GroupCoordinate};
 use leo_ast::values::GroupValue as AstGroupValue;
 use leo_input::values::GroupValue as InputGroupValue;
diff --git a/typed/src/groups/mod.rs b/typed/src/groups/mod.rs
index 98533d2893..d7746a5b86 100644
--- a/typed/src/groups/mod.rs
+++ b/typed/src/groups/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod group_coordinate;
 pub use self::group_coordinate::*;
 
diff --git a/typed/src/imports/import.rs b/typed/src/imports/import.rs
index c049b60928..aeac7f0d3b 100644
--- a/typed/src/imports/import.rs
+++ b/typed/src/imports/import.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! The import type for a Leo program.
 
 use crate::{Package, Span};
diff --git a/typed/src/imports/import_symbol.rs b/typed/src/imports/import_symbol.rs
index 2a5668b244..efaf600807 100644
--- a/typed/src/imports/import_symbol.rs
+++ b/typed/src/imports/import_symbol.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Identifier, Span};
 use leo_ast::imports::ImportSymbol as AstImportSymbol;
 
diff --git a/typed/src/imports/mod.rs b/typed/src/imports/mod.rs
index 09c4d143f2..faffbb0afe 100644
--- a/typed/src/imports/mod.rs
+++ b/typed/src/imports/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod import;
 pub use import::*;
 
diff --git a/typed/src/imports/package.rs b/typed/src/imports/package.rs
index 16776a2b97..d67cde967f 100644
--- a/typed/src/imports/package.rs
+++ b/typed/src/imports/package.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{common::Identifier, PackageAccess, Span};
 use leo_ast::imports::Package as AstPackage;
 
diff --git a/typed/src/imports/package_access.rs b/typed/src/imports/package_access.rs
index d019b12534..437319f541 100644
--- a/typed/src/imports/package_access.rs
+++ b/typed/src/imports/package_access.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ImportSymbol, Package, Span};
 use leo_ast::imports::PackageAccess as AstPackageAccess;
 
diff --git a/typed/src/input/input.rs b/typed/src/input/input.rs
index 8f1dd54bfc..0ed2bdbf1c 100644
--- a/typed/src/input/input.rs
+++ b/typed/src/input/input.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{InputValue, MainInput, ProgramInput, ProgramState, Record, Registers, State, StateLeaf};
 use leo_input::{
     files::{File, TableOrSection},
diff --git a/typed/src/input/input_value.rs b/typed/src/input/input_value.rs
index 4d064e728c..ba2c4288bc 100644
--- a/typed/src/input/input_value.rs
+++ b/typed/src/input/input_value.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::GroupValue;
 use leo_input::{
     errors::InputParserError,
diff --git a/typed/src/input/macros.rs b/typed/src/input/macros.rs
index e8156f128c..565236ad30 100644
--- a/typed/src/input/macros.rs
+++ b/typed/src/input/macros.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_export]
 macro_rules! input_section_impl {
     ($($name: ident), *) => ($(
diff --git a/typed/src/input/mod.rs b/typed/src/input/mod.rs
index 59838e374f..8dee75b92b 100644
--- a/typed/src/input/mod.rs
+++ b/typed/src/input/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 #[macro_use]
 pub mod macros;
 pub use macros::*;
diff --git a/typed/src/input/parameters/mod.rs b/typed/src/input/parameters/mod.rs
index cf55dbc6dd..c1ae3fad35 100644
--- a/typed/src/input/parameters/mod.rs
+++ b/typed/src/input/parameters/mod.rs
@@ -1,2 +1,18 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod parameter;
 pub use parameter::*;
diff --git a/typed/src/input/parameters/parameter.rs b/typed/src/input/parameters/parameter.rs
index 931a293d65..709cd38daa 100644
--- a/typed/src/input/parameters/parameter.rs
+++ b/typed/src/input/parameters/parameter.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Identifier, Span, Type};
 use leo_input::parameters::Parameter as AstParameter;
 
diff --git a/typed/src/input/program_input/main_input.rs b/typed/src/input/program_input/main_input.rs
index 42355f1b4b..61f7a3fc67 100644
--- a/typed/src/input/program_input/main_input.rs
+++ b/typed/src/input/program_input/main_input.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::InputValue;
 use leo_input::{definitions::Definition, InputParserError};
 use std::collections::HashMap;
diff --git a/typed/src/input/program_input/mod.rs b/typed/src/input/program_input/mod.rs
index cf453d57d8..ee0af204ed 100644
--- a/typed/src/input/program_input/mod.rs
+++ b/typed/src/input/program_input/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod main_input;
 pub use main_input::*;
 
diff --git a/typed/src/input/program_input/program_input.rs b/typed/src/input/program_input/program_input.rs
index 9734f51575..ba823d784c 100644
--- a/typed/src/input/program_input/program_input.rs
+++ b/typed/src/input/program_input/program_input.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{InputValue, MainInput, Registers};
 use leo_input::{
     sections::{Header, Section},
diff --git a/typed/src/input/program_input/registers.rs b/typed/src/input/program_input/registers.rs
index 29a5a5ad79..e3d7217d4c 100644
--- a/typed/src/input/program_input/registers.rs
+++ b/typed/src/input/program_input/registers.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{InputValue, Parameter};
 use leo_input::{definitions::Definition, InputParserError};
 
diff --git a/typed/src/input/program_state/mod.rs b/typed/src/input/program_state/mod.rs
index cb46f6ba9c..a1f50fd915 100644
--- a/typed/src/input/program_state/mod.rs
+++ b/typed/src/input/program_state/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod private_state;
 pub use private_state::*;
 
diff --git a/typed/src/input/program_state/private_state/mod.rs b/typed/src/input/program_state/private_state/mod.rs
index 2dafb8f530..39b3a4b8f3 100644
--- a/typed/src/input/program_state/private_state/mod.rs
+++ b/typed/src/input/program_state/private_state/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod private_state;
 pub use private_state::*;
 
diff --git a/typed/src/input/program_state/private_state/private_state.rs b/typed/src/input/program_state/private_state/private_state.rs
index 600b7a5411..28ad9070ff 100644
--- a/typed/src/input/program_state/private_state/private_state.rs
+++ b/typed/src/input/program_state/private_state/private_state.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Record, StateLeaf};
 use leo_input::{
     sections::{Header, Section},
diff --git a/typed/src/input/program_state/private_state/record.rs b/typed/src/input/program_state/private_state/record.rs
index 2694bc6724..f2e1645449 100644
--- a/typed/src/input/program_state/private_state/record.rs
+++ b/typed/src/input/program_state/private_state/record.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{InputValue, Parameter};
 use leo_input::{definitions::Definition, InputParserError};
 
diff --git a/typed/src/input/program_state/private_state/state_leaf.rs b/typed/src/input/program_state/private_state/state_leaf.rs
index 678bd5d2d3..e66c51f0ab 100644
--- a/typed/src/input/program_state/private_state/state_leaf.rs
+++ b/typed/src/input/program_state/private_state/state_leaf.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{InputValue, Parameter};
 use leo_input::{definitions::Definition, InputParserError};
 
diff --git a/typed/src/input/program_state/program_state.rs b/typed/src/input/program_state/program_state.rs
index 74df026916..8e1fbf1309 100644
--- a/typed/src/input/program_state/program_state.rs
+++ b/typed/src/input/program_state/program_state.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{PrivateState, PublicState, Record, State, StateLeaf};
 use leo_input::{
     tables::{Table, Visibility},
diff --git a/typed/src/input/program_state/public_state/mod.rs b/typed/src/input/program_state/public_state/mod.rs
index 227bc30313..125d1ff5ac 100644
--- a/typed/src/input/program_state/public_state/mod.rs
+++ b/typed/src/input/program_state/public_state/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod public_state;
 pub use public_state::*;
 
diff --git a/typed/src/input/program_state/public_state/public_state.rs b/typed/src/input/program_state/public_state/public_state.rs
index feb8675f2a..403eb48c89 100644
--- a/typed/src/input/program_state/public_state/public_state.rs
+++ b/typed/src/input/program_state/public_state/public_state.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::State;
 use leo_input::{
     sections::{Header, Section},
diff --git a/typed/src/input/program_state/public_state/state.rs b/typed/src/input/program_state/public_state/state.rs
index d9dd896256..e6afcb7d6e 100644
--- a/typed/src/input/program_state/public_state/state.rs
+++ b/typed/src/input/program_state/public_state/state.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{InputValue, Parameter};
 use leo_input::{definitions::Definition, InputParserError};
 
diff --git a/typed/src/lib.rs b/typed/src/lib.rs
index 290550c657..3d7a97cd04 100644
--- a/typed/src/lib.rs
+++ b/typed/src/lib.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! A typed syntax tree is represented as a `Program` and consists of import, circuit, and function definitions.
 //! Each defined type consists of typed statements and expressions.
 
diff --git a/typed/src/macros/debug.rs b/typed/src/macros/debug.rs
index acda9bfed5..1f6005a962 100644
--- a/typed/src/macros/debug.rs
+++ b/typed/src/macros/debug.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_ast::macros::Debug as AstDebug;
 
 use serde::{Deserialize, Serialize};
diff --git a/typed/src/macros/error_macro.rs b/typed/src/macros/error_macro.rs
index 54d92666ce..f3c3422c3a 100644
--- a/typed/src/macros/error_macro.rs
+++ b/typed/src/macros/error_macro.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_ast::macros::Error as AstError;
 
 use serde::{Deserialize, Serialize};
diff --git a/typed/src/macros/formatted_container.rs b/typed/src/macros/formatted_container.rs
index 7be6537ac9..35cd4fc48e 100644
--- a/typed/src/macros/formatted_container.rs
+++ b/typed/src/macros/formatted_container.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::Span;
 use leo_ast::macros::FormattedContainer as AstFormattedContainer;
 
diff --git a/typed/src/macros/formatted_macro.rs b/typed/src/macros/formatted_macro.rs
index c66e118cf0..e2849af3a5 100644
--- a/typed/src/macros/formatted_macro.rs
+++ b/typed/src/macros/formatted_macro.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{FormattedString, MacroName, Span};
 use leo_ast::macros::FormattedMacro as AstFormattedMacro;
 
diff --git a/typed/src/macros/formatted_parameter.rs b/typed/src/macros/formatted_parameter.rs
index baa192b8ba..22f955343a 100644
--- a/typed/src/macros/formatted_parameter.rs
+++ b/typed/src/macros/formatted_parameter.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Expression, Span};
 use leo_ast::macros::FormattedParameter as AstFormattedParameter;
 
diff --git a/typed/src/macros/formatted_string.rs b/typed/src/macros/formatted_string.rs
index 61bb48e8ec..b7dc5fb12a 100644
--- a/typed/src/macros/formatted_string.rs
+++ b/typed/src/macros/formatted_string.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{FormattedContainer, FormattedParameter, Span};
 use leo_ast::macros::FormattedString as AstFormattedString;
 
diff --git a/typed/src/macros/macro_name.rs b/typed/src/macros/macro_name.rs
index 89b8af041f..e944e881e4 100644
--- a/typed/src/macros/macro_name.rs
+++ b/typed/src/macros/macro_name.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Debug, ErrorMacro, Print};
 use leo_ast::macros::MacroName as AstMacroName;
 
diff --git a/typed/src/macros/mod.rs b/typed/src/macros/mod.rs
index 9c636c29a0..8393378bb9 100644
--- a/typed/src/macros/mod.rs
+++ b/typed/src/macros/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod debug;
 pub use debug::*;
 
diff --git a/typed/src/macros/print.rs b/typed/src/macros/print.rs
index 950c8a0d35..2398a16be1 100644
--- a/typed/src/macros/print.rs
+++ b/typed/src/macros/print.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_ast::macros::Print as AstPrint;
 
 use serde::{Deserialize, Serialize};
diff --git a/typed/src/main.rs b/typed/src/main.rs
index 0ed3c23384..38b928785c 100644
--- a/typed/src/main.rs
+++ b/typed/src/main.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_ast::{LeoAst, ParserError};
 use leo_typed::LeoTypedAst;
 use std::{env, fs, path::Path};
diff --git a/typed/src/program.rs b/typed/src/program.rs
index abe5cb8bf0..8cc8b4f3ad 100644
--- a/typed/src/program.rs
+++ b/typed/src/program.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 //! A typed Leo program consists of import, circuit, and function definitions.
 //! Each defined type consists of typed statements and expressions.
 
diff --git a/typed/src/statements/conditional_nested_or_end_statement.rs b/typed/src/statements/conditional_nested_or_end_statement.rs
index 9b2f01a6db..151ec816ac 100644
--- a/typed/src/statements/conditional_nested_or_end_statement.rs
+++ b/typed/src/statements/conditional_nested_or_end_statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ConditionalStatement, Statement};
 use leo_ast::statements::ConditionalNestedOrEndStatement as AstConditionalNestedOrEndStatement;
 
diff --git a/typed/src/statements/conditional_statement.rs b/typed/src/statements/conditional_statement.rs
index 1e3d82316f..019e22f5ed 100644
--- a/typed/src/statements/conditional_statement.rs
+++ b/typed/src/statements/conditional_statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{ConditionalNestedOrEndStatement, Expression, Statement};
 use leo_ast::statements::ConditionalStatement as AstConditionalStatement;
 
diff --git a/typed/src/statements/mod.rs b/typed/src/statements/mod.rs
index 8860efeb3f..8fcd2b997e 100644
--- a/typed/src/statements/mod.rs
+++ b/typed/src/statements/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod conditional_nested_or_end_statement;
 pub use conditional_nested_or_end_statement::*;
 
diff --git a/typed/src/statements/statement.rs b/typed/src/statements/statement.rs
index edc6b4d944..b7c3e5ed1c 100644
--- a/typed/src/statements/statement.rs
+++ b/typed/src/statements/statement.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Assignee, ConditionalStatement, Declare, Expression, FormattedMacro, Identifier, Span, Variables};
 use leo_ast::{
     operations::AssignOperation,
diff --git a/typed/src/types/integer_type.rs b/typed/src/types/integer_type.rs
index 7323dac50a..e766c65168 100644
--- a/typed/src/types/integer_type.rs
+++ b/typed/src/types/integer_type.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_ast::types::{
     IntegerType as AstIntegerType,
     SignedIntegerType as AstSignedIntegerType,
diff --git a/typed/src/types/mod.rs b/typed/src/types/mod.rs
index 44962bfb67..9d9ca5aa82 100644
--- a/typed/src/types/mod.rs
+++ b/typed/src/types/mod.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 pub mod integer_type;
 pub use integer_type::*;
 
diff --git a/typed/src/types/type_.rs b/typed/src/types/type_.rs
index ea7c9b2b19..e8688ebc9a 100644
--- a/typed/src/types/type_.rs
+++ b/typed/src/types/type_.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{Expression, Identifier, IntegerType};
 use leo_ast::types::{ArrayType, CircuitType, DataType, TupleType, Type as AstType};
 use leo_input::types::{
diff --git a/typed/tests/mod.rs b/typed/tests/mod.rs
index 1118e0b570..6698b5585a 100644
--- a/typed/tests/mod.rs
+++ b/typed/tests/mod.rs
@@ -1 +1,17 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 mod serialization;
diff --git a/typed/tests/serialization/json.rs b/typed/tests/serialization/json.rs
index bd985ae308..772e857a7a 100644
--- a/typed/tests/serialization/json.rs
+++ b/typed/tests/serialization/json.rs
@@ -1,3 +1,19 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use leo_ast::LeoAst;
 use leo_typed::LeoTypedAst;
 
diff --git a/typed/tests/serialization/mod.rs b/typed/tests/serialization/mod.rs
index cff0e9089e..19cc88a3bf 100644
--- a/typed/tests/serialization/mod.rs
+++ b/typed/tests/serialization/mod.rs
@@ -1 +1,17 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 mod json;