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141 lines
9.0 KiB
Markdown
<p align="center">
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<img
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width="320"
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src="docs/img/nix-bitcoin-logo.png"
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alt="nix-bitcoin logo">
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</p>
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<br/>
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<p align="center">
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<a href="https://cirrus-ci.com/github/fort-nix/nix-bitcoin" target="_blank">
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<img src="https://api.cirrus-ci.com/github/fort-nix/nix-bitcoin.svg?branch=master" alt="CirrusCI status">
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</a>
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<a href="https://github.com/fort-nix/nix-bitcoin/releases/latest" target="_blank">
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<img src="https://img.shields.io/github/v/release/fort-nix/nix-bitcoin" alt="GitHub tag (latest SemVer)">
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</a>
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<a href="https://github.com/fort-nix/nix-bitcoin/commits/master" target="_blank">
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<img src="https://img.shields.io/github/commit-activity/y/fort-nix/nix-bitcoin" alt="GitHub commit activity">
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</a>
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<a href="https://github.com/fort-nix/nix-bitcoin/graphs/contributors" target="_blank">
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<img src="https://img.shields.io/github/contributors-anon/fort-nix/nix-bitcoin" alt="GitHub contributors">
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</a>
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<a href="https://github.com/fort-nix/nix-bitcoin/releases" target="_blank">
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<img src="https://img.shields.io/github/downloads/fort-nix/nix-bitcoin/total" alt="GitHub downloads">
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</a>
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</p>
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<br/>
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nix-bitcoin is a collection of Nix packages and NixOS modules for easily installing **full-featured Bitcoin nodes** with an emphasis on **security**.
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Overview
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---
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nix-bitcoin can be used for personal or merchant wallets, public infrastructure or
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for Bitcoin application backends. In all cases, the aim is to provide security and
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privacy by default. However, while nix-bitcoin is used in production today, it is
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still considered experimental.
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nix-bitcoin nodes can be deployed on dedicated hardware, virtual machines or containers.
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The Nix packages and NixOS modules can be used independently and combined freely.
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nix-bitcoin is built on top of Nix and [NixOS](https://nixos.org/) which provide powerful abstractions to keep it highly customizable and
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maintainable. Testament to this are nix-bitcoin's robust security features and its potent test framework. However,
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running nix-bitcoin does not require any previous experience with the Nix ecosystem.
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Get started
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---
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- See the [examples](examples/README.md) for an overview of all features.
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- To setup a new node from scratch, see the [installation instructions](docs/install.md).
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- To add nix-bitcoin to an existing NixOS configuration, see [importable-configuration.nix](examples/importable-configuration.nix)
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and the [Flake example](examples/flakes/flake.nix).
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Docs
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---
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Hint: To show a table of contents, click the button () in the
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top left corner of the documents.
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<!-- TODO-EXTERNAL: -->
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<!-- Change query to `nix-bitcoin` when upstream search has been fixed -->
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* [NixOS options search](https://search.nixos.org/flakes?channel=unstable&sort=relevance&type=options&query=bitcoin)
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* [Hardware requirements](docs/hardware.md)
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* [Installation](docs/install.md)
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* [Configuration and maintenance](docs/configuration.md)
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* [Using services](docs/services.md)
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* [FAQ](docs/faq.md)
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Features
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---
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A [configuration preset](modules/presets/secure-node.nix) for setting up a secure node
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* All applications use Tor for outbound connections and support accepting inbound connections via onion services.
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NixOS modules ([src](modules/modules.nix))
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* Application services
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* [bitcoind](https://github.com/bitcoin/bitcoin)
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* [clightning](https://github.com/ElementsProject/lightning) with support for announcing an onion service
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and [database replication](docs/services.md#setup-clightning-database-replication).\
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Available plugins:
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* [clboss](https://github.com/ZmnSCPxj/clboss): automated C-Lightning Node Manager
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* [currencyrate](https://github.com/lightningd/plugins/tree/master/currencyrate): currency converter
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* [helpme](https://github.com/lightningd/plugins/tree/master/helpme): walks you through setting up a fresh c-lightning node
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* [monitor](https://github.com/lightningd/plugins/tree/master/monitor): helps you analyze the health of your peers and channels
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* [prometheus](https://github.com/lightningd/plugins/tree/master/prometheus): lightning node exporter for the prometheus timeseries server
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* [rebalance](https://github.com/lightningd/plugins/tree/master/rebalance): keeps your channels balanced
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* [summary](https://github.com/lightningd/plugins/tree/master/summary): print a nice summary of the node status
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* [trustedcoin](https://github.com/nbd-wtf/trustedcoin) ([experimental](docs/services.md#trustedcoin)): replaces bitcoind with trusted public explorers
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* [zmq](https://github.com/lightningd/plugins/tree/master/zmq): publishes notifications via ZeroMQ to configured endpoints
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* [clightning-rest](https://github.com/Ride-The-Lightning/c-lightning-REST): REST server for clightning
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* [lnd](https://github.com/lightningnetwork/lnd) with support for announcing an onion service and [static channel backups](https://github.com/lightningnetwork/lnd/blob/master/docs/recovery.md)
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* [Lightning Loop](https://github.com/lightninglabs/loop)
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* [Lightning Pool](https://github.com/lightninglabs/pool)
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* [charge-lnd](https://github.com/accumulator/charge-lnd): policy-based channel fee manager
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* [lndconnect](https://github.com/LN-Zap/lndconnect): connect your wallet to lnd or
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clightning [via WireGuard](./docs/services.md#use-zeus-mobile-lightning-wallet-via-wireguard) or
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[Tor](./docs/services.md#use-zeus-mobile-lightning-wallet-via-tor)
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* [Ride The Lightning](https://github.com/Ride-The-Lightning/RTL): web interface for `lnd` and `clightning`
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* [electrs](https://github.com/romanz/electrs): Electrum server
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* [fulcrum](https://github.com/cculianu/Fulcrum): Electrum server (see [the module](modules/fulcrum.nix) for a comparison with electrs)
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* [btcpayserver](https://github.com/btcpayserver/btcpayserver)
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* [liquid](https://github.com/elementsproject/elements): federated sidechain
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* [JoinMarket](https://github.com/joinmarket-org/joinmarket-clientserver)
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* [JoinMarket Orderbook Watcher](https://github.com/JoinMarket-Org/joinmarket-clientserver/blob/master/docs/orderbook.md)
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* [bitcoin-core-hwi](https://github.com/bitcoin-core/HWI)
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* Helper
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* [netns-isolation](modules/netns-isolation.nix): isolates applications on the network-level via network namespaces
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* [nodeinfo](modules/nodeinfo.nix): script which prints info about the node's services
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* [backups](modules/backups.nix): duplicity backups of all your node's important files
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* [operator](modules/operator.nix): configures a non-root user who has access to client tools (e.g. `bitcoin-cli`, `lightning-cli`)
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### Extension modules
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Extension modules are maintained in separate repositories and have their own review
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and release process.
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* [Mempool](https://github.com/fort-nix/nix-bitcoin-mempool): Bitcoin visualizer, explorer and API service
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Security
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---
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See [SECURITY.md](SECURITY.md) for the security policy and how to report a vulnerability.
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nix-bitcoin aims to achieve a high degree of security by building on the following principles:
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* **Simplicity:** Only services enabled in `configuration.nix` and their dependencies are installed, support for [doas](https://github.com/Duncaen/OpenDoas) ([sudo alternative](https://lobste.rs/s/efsvqu/heap_based_buffer_overflow_sudo_cve_2021#c_c6fcfa)), code is continuously reviewed and refined.
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* **Integrity:** The Nix package manager guarantees that all dependencies are exactly specified, packages can be built from source to reduce reliance on binary caches, nix-bitcoin merge commits are signed, all commits are approved by multiple nix-bitcoin developers, upstream packages are cryptographically verified where possible, we use this software ourselves.
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* **Principle of Least Privilege:** Services operate with least privileges; they each have their own user and are restricted further with [systemd features](pkgs/lib.nix), [RPC whitelisting](modules/bitcoind-rpc-public-whitelist.nix) and [netns-isolation](modules/netns-isolation.nix). There's a non-root user *operator* to interact with the various services.
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* **Defense-in-depth:** nix-bitcoin supports a [hardened kernel](https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/profiles/hardened.nix), services are confined through discretionary access control, Linux namespaces, [dbus firewall](modules/security.nix) and seccomp-bpf with continuous improvements.
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Note that if the machine you're deploying *from* is insecure, there is nothing nix-bitcoin can do to protect itself.
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Security fund
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---
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The nix-bitcoin security fund is a 2 of 3 bitcoin multisig address open for donations, used to reward
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security researchers who discover vulnerabilities in nix-bitcoin or its upstream dependencies.\
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See [Security Fund](./SECURITY.md#nix-bitcoin-security-fund) for details.
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Developing
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---
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See [dev/README](./dev/README.md).
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Troubleshooting
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---
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If you are having problems with nix-bitcoin check the [FAQ](docs/faq.md) or submit an issue.\
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There's also a Matrix room at [#general:nixbitcoin.org](https://matrix.to/#/#general:nixbitcoin.org)
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and a `#nix-bitcoin` IRC channel on [libera](https://libera.chat).\
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We are always happy to help.
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