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105 lines
7.2 KiB
Markdown
105 lines
7.2 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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A Bitcoin node verifies the Bitcoin protocol and provides ways of interacting with the Bitcoin network. nix-bitcoin
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nodes are used for a variety of purposes and can serve as personal or merchant wallets, second layer public
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infrastructure and as backends for Bitcoin applications. In all cases, the aim is to provide security and privacy by
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default. However, while nix-bitcoin is used in production today, it is still considered experimental.
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A full installation of nix-bitcoin is usually deployed either on a dedicated (virtual) machine or runs in a container
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and is online 24/7. Alternatively, the Nix packages, NixOS modules and configurations can be used independently and
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combined freely.
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nix-bitcoin is built on top of Nix and NixOS 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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Examples
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---
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See [here for examples](examples/README.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
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* Application services
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* [bitcoind](https://github.com/bitcoin/bitcoin), with a default banlist against spy nodes
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* [clightning](https://github.com/ElementsProject/lightning) with support for announcing an onion service\
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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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* [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/renepickhardt/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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* [zmq](https://github.com/lightningd/plugins/tree/master/zmq): publishes notifications via ZeroMQ to configured endpoints
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* [lnd](https://github.com/lightningnetwork/lnd) with support for announcing an onion service
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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) via a REST onion service
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* [spark-wallet](https://github.com/shesek/spark-wallet)
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* [electrs](https://github.com/romanz/electrs)
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* [btcpayserver](https://github.com/btcpayserver/btcpayserver)
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* [liquid](https://github.com/elementsproject/elements)
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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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* [recurring-donations](modules/recurring-donations.nix): for periodic lightning payments
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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): adds non-root user `operator` who has access to client tools (e.g. `bitcoin-cli`, `lightning-cli`)
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Security
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---
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* **Simplicity:** Only services you select in `configuration.nix` and their dependencies are installed, packages and dependencies are [pinned](pkgs/nixpkgs-pinned.nix), support for [doas](https://github.com/Duncaen/OpenDoas) ([sudo alternative](https://lobste.rs/s/efsvqu/heap_based_buffer_overflow_sudo_cve_2021#c_c6fcfa)), most packages are built from the [NixOS stable channel](https://github.com/NixOS/nixpkgs/tree/nixos-20.09), with a few exceptions that are built from the nixpkgs unstable channel, builds happen in a [sandboxed environment](https://nixos.org/manual/nix/stable/#conf-sandbox), code is continuously reviewed and refined.
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* **Integrity:** Nix package manager, NixOS and 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 options](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 is built with a [hardened kernel](https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/profiles/hardened.nix) by default, 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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Docs
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---
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* [FAQ](docs/faq.md)
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* [Hardware Requirements](docs/hardware.md)
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* [Install instructions](docs/install.md)
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* [Usage instructions](docs/usage.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 `#nix-bitcoin` IRC channel on [libera](https://libera.chat).
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We are always happy to help.
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