diff --git a/Makefile b/Makefile
index 4b4bd0c70..8aee9c028 100644
--- a/Makefile
+++ b/Makefile
@@ -34,7 +34,7 @@ RM=rm -f
 CC=gcc
 CXX=g++
 CXXFLAGS=$(CFLAGS)
-CLD=g++ -O2 -g -L/usr/local/lib -L/opt/local/lib
+CLD=g++ -O0 -g -L/usr/local/lib -L/opt/local/lib
 YACC=bison -v -b$(GENERATED)/y
 LEX=lex
 
@@ -55,7 +55,7 @@ LIBS=-lssl -lcrypto -lgmp -lncurses -lsigsegv $(OSLIBS)
 INCLUDE=include
 MDEFINES=-DU2_OS_$(OS) -DU2_OS_ENDIAN_$(ENDIAN) -D U2_LIB=\"$(LIB)\"
 
-CFLAGS= -O2 -g \
+CFLAGS= -O0 -g \
 	-I/usr/local/include \
 	-I/opt/local/include \
 	-I$(INCLUDE)  \
@@ -177,6 +177,7 @@ J164_5_OFILES=\
        gen164/5/trip.o
 
 J164_5_OFILES_ED=\
+       gen164/5/ed_puck.o \
        gen164/5/ed_sign.o
 
 J164_6_OFILES=\
diff --git a/gen164/5/ed.c b/gen164/5/ed.c
index 5e0502353..c8a45cebf 100644
--- a/gen164/5/ed.c
+++ b/gen164/5/ed.c
@@ -7,16 +7,20 @@
 
 /* declarations
 */
-  extern u2_ho_jet j2_mcj(Pt5, ed, sign)[];
+  extern u2_ho_jet j2_mdj(Pt5, coed, ed, sign)[];
+  extern u2_ho_jet j2_mdj(Pt5, coed, ed, puck)[];
+
+  u2_ho_driver
+  j2_mcd(Pt5, coed, ed)[] = {
+    { j2_sd(Pt5, coed, ed, sign), j2_mdj(Pt5, coed, ed, sign), 0, 0, u2_none },
+    { j2_sd(Pt5, coed, ed, puck), j2_mdj(Pt5, coed, ed, puck), 0, 0, u2_none },
+    {}
+  };
 
 /* structures
 */
   u2_ho_driver
-  j2_mbd(Pt5, ed)[] = {
-    { j2_sc(Pt5, ed, sign), j2_mcj(Pt5, ed, sign), 0, 0, u2_none },
+  j2_mbd(Pt5, coed)[] = {
+    { j2_sc(Pt5, coed, ed), 0, j2_mcd(Pt5, coed, ed), 0, 0, u2_none },
     {}
   };
-
-  u2_ho_driver
-  j2_db(Pt5, ed) =
-    { j2_sb(Pt5, ed), 0, j2_mbd(Pt5, ed), 0, u2_none };
diff --git a/gen164/5/ed_puck.c b/gen164/5/ed_puck.c
new file mode 100644
index 000000000..e20d7f2a3
--- /dev/null
+++ b/gen164/5/ed_puck.c
@@ -0,0 +1,36 @@
+/* gen164/5/ed_sign.c
+**
+** This file is in the public domain.
+*/
+#include "all.h"
+#include "../pit.h"
+
+#include <ed25519.h>
+
+/* functions
+*/
+  u2_weak
+  j2_md(Pt5, coed, ed, puck)(u2_wire wir_r,
+                             u2_noun cor)
+  {
+    c3_y pub_y[32];
+    c3_y sec_y[64];
+    c3_y sed_y[32];
+    u2_noun a = u2_frag(u2_cv_sam, cor);
+
+    if ( (u2_none == a) || (u2_no == u2_stud(a)) ) {
+      return u2_bl_bail(wir_r, c3__exit);
+    }
+
+    u2_cr_bytes(0, 32, sed_y, a);
+    ed25519_create_keypair(pub_y, sec_y, sed_y);
+    return u2_ci_bytes(32, pub_y);
+  }
+/* structures
+*/
+  u2_ho_jet
+  j2_mdj(Pt5, coed, ed, puck)[] = {
+    { ".2", c3__lite, j2_md(Pt5, coed, ed, puck),
+      u2_jet_test|u2_jet_live, u2_none, u2_none },
+    { }
+  };
diff --git a/gen164/5/ed_sign.c b/gen164/5/ed_sign.c
index 0baa2c363..8780ff151 100644
--- a/gen164/5/ed_sign.c
+++ b/gen164/5/ed_sign.c
@@ -10,7 +10,7 @@
 /* functions
 */
   u2_weak                                                         //  transfer
-  j2_mc(Pt5, ed, sign)(u2_wire wir_r,
+  j2_mcc(Pt5, ed, sign)(u2_wire wir_r,
                         u2_noun a,                                 //  retain
                         u2_noun b,                                 //  retain
                         u2_noun c)                                 //  retain
@@ -26,26 +26,43 @@
 
     c3_y* mes_y = 0;
 
+
     if ( 64 < secm_w ) {
       return u2_bl_bail(wir_r, c3__exit);
     }
     if ( 32 < pubm_w ) {
       return u2_bl_bail(wir_r, c3__exit);
     }
+    memset(&sig_y, 64, 0);
+    memset(&pub_y, 32, 0);
 
     mes_y = c3_malloc(mesm_w);
+
     u2_cr_bytes(0, mesm_w, mes_y, a);
-    u2_cr_bytes(0, 64, sec_y, b);
-    u2_cr_bytes(0, 32, pub_y, c);
+    u2_cr_bytes(0, secm_w, sec_y, b);
+    u2_cr_bytes(0, pubm_w, pub_y, c);
 
     ed25519_sign(sig_y, mes_y, mesm_w, pub_y, sec_y);
     free(mes_y);
     return u2_ci_bytes(64, sig_y);
   }
+  u2_weak
+  j2_md(Pt5, coed, ed, sign)(u2_wire wir_r,
+                             u2_noun cor)
+  {
+    u2_noun a, b, c;
+    if ( u2_no == u2_mean(cor,
+                          u2_cv_sam_2, &a, u2_cv_sam_6, &b,
+                          u2_cv_sam_7, &c, 0) ) {
+      return u2_bl_bail(wir_r, c3__fail);
+    } else {
+      return j2_mcc(Pt5, ed, sign)(wir_r, a, b, c);
+    }
+  }
 /* structures
 */
   u2_ho_jet
-  j2_mcj(Pt5, ed, sign)[] = {
-    { ".2", c3__lite, j2_mc(Pt5, ed, sign), u2_jet_test|u2_jet_live, u2_none, u2_none },
+  j2_mdj(Pt5, coed, ed, sign)[] = {
+    { ".2", c3__lite, j2_md(Pt5, coed, ed, sign), u2_jet_test|u2_jet_live, u2_none, u2_none },
     { }
   };
diff --git a/gen164/watt.c b/gen164/watt.c
index 407e514e9..44ed6882f 100644
--- a/gen164/watt.c
+++ b/gen164/watt.c
@@ -100,6 +100,7 @@
     extern u2_ho_driver j2_mbd(Pt5, comp)[];
     extern u2_ho_driver j2_mbd(Pt5, cook)[];
     extern u2_ho_driver j2_mbd(Pt5, easy)[];
+    extern u2_ho_driver j2_mbd(Pt5, coed)[];
     extern u2_ho_driver j2_mbd(Pt5, glue)[];
     extern u2_ho_driver j2_mbd(Pt5, here)[];
     extern u2_ho_driver j2_mbd(Pt5, just)[];
@@ -213,6 +214,7 @@
     { j2_sb(Pt4, in), 0, j2_mbd(Pt4, in), 0, u2_none },
     { j2_sb(Pt4, by), 0, j2_mbd(Pt4, by), 0, u2_none },
     { j2_sb(Pt5, bend), 0, j2_mbd(Pt5, bend), 0, u2_none },
+    { j2_sb(Pt5, coed), 0, j2_mbd(Pt5, coed), 0, u2_none },
     { j2_sb(Pt5, cold), 0, j2_mbd(Pt5, cold), 0, u2_none },
     { j2_sb(Pt5, comp), 0, j2_mbd(Pt5, comp), 0, u2_none },
     { j2_sb(Pt5, cook), 0, j2_mbd(Pt5, cook), 0, u2_none },