Go to file
Jonas Nick 479e21a122
Merge fort-nix/nix-bitcoin#587: Fulcrum: Fix available memory detection
86dc7e2669 fulcrum: allow access to `/proc/meminfo` (Erik Arvstedt)
c948af2e18 dev/dev-features: add `enter_service` helper (Erik Arvstedt)

Pull request description:

ACKs for top commit:
  jonasnick:
    ACK 86dc7e2669

Tree-SHA512: 5c2b7bc5e2247a7fb45e6c805162c02d87b4c917e4a1306134d634f418534b03e3152e402d17e054c410d3d72f3f5eb3d270fcb53019b2f96ea6b27ecae53755
2023-02-03 13:21:56 +00:00
dev Merge fort-nix/nix-bitcoin#587: Fulcrum: Fix available memory detection 2023-02-03 13:21:56 +00:00
docs docs/configuration: fix typo 2023-01-15 20:28:48 +01:00
examples improve comments 2023-01-26 11:17:02 +01:00
helper helper: add start-bash-session.sh 2023-02-02 10:51:40 +01:00
modules Merge fort-nix/nix-bitcoin#587: Fulcrum: Fix available memory detection 2023-02-03 13:21:56 +00:00
pkgs Merge fort-nix/nix-bitcoin#586: Misc. improvements 2023-02-03 13:11:41 +00:00
test Merge fort-nix/nix-bitcoin#586: Misc. improvements 2023-02-03 13:11:41 +00:00
.cirrus.yml update to NixOS 22.11 2022-12-18 20:01:52 +01:00
default.nix delete modules/default.nix 2022-08-28 23:49:12 +02:00
flake.lock update nixpkgs 2023-01-25 23:57:29 +01:00
flake.nix add dev helper and docs 2023-01-15 20:28:49 +01:00
LICENSE Add license 2019-01-02 14:03:52 +00:00
overlay.nix simplify overlay.nix 2020-01-09 10:43:29 +01:00
README.md add dev helper and docs 2023-01-15 20:28:49 +01:00
SECURITY.md docs/security: fix typo 2022-08-28 23:49:12 +02:00
shell.nix Clean up development shell.nix 2020-03-30 10:49:15 +02:00

nix-bitcoin logo


CirrusCI status GitHub tag (latest SemVer) GitHub commit activity GitHub contributors GitHub downloads


nix-bitcoin is a collection of Nix packages and NixOS modules for easily installing full-featured Bitcoin nodes with an emphasis on security.

Overview

nix-bitcoin can be used for personal or merchant wallets, public infrastructure or for Bitcoin application backends. In all cases, the aim is to provide security and privacy by default. However, while nix-bitcoin is used in production today, it is still considered experimental.

nix-bitcoin nodes can be deployed on dedicated hardware, virtual machines or containers. The Nix packages and NixOS modules can be used independently and combined freely.

nix-bitcoin is built on top of Nix and NixOS which provide powerful abstractions to keep it highly customizable and maintainable. Testament to this are nix-bitcoin's robust security features and its potent test framework. However, running nix-bitcoin does not require any previous experience with the Nix ecosystem.

Get started

Docs

Hint: To show a table of contents, click the button (Github TOC button) in the top left corner of the documents.

Features

A configuration preset for setting up a secure node

  • All applications use Tor for outbound connections and support accepting inbound connections via onion services.

NixOS modules (src)

Security

See SECURITY.md for the security policy and how to report a vulnerability.

nix-bitcoin aims to achieve a high degree of security by building on the following principles:

  • Simplicity: Only services enabled in configuration.nix and their dependencies are installed, support for doas (sudo alternative), code is continuously reviewed and refined.
  • 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.
  • Principle of Least Privilege: Services operate with least privileges; they each have their own user and are restricted further with systemd features, RPC whitelisting and netns-isolation. There's a non-root user operator to interact with the various services.
  • Defense-in-depth: nix-bitcoin supports a hardened kernel, services are confined through discretionary access control, Linux namespaces, dbus firewall and seccomp-bpf with continuous improvements.

Note that if the machine you're deploying from is insecure, there is nothing nix-bitcoin can do to protect itself.

Security fund

The nix-bitcoin security fund is a 2 of 3 bitcoin multisig address open for donations, used to reward security researchers who discover vulnerabilities in nix-bitcoin or its upstream dependencies.
See Security Fund for details.

Developing

See dev/README.

Troubleshooting

If you are having problems with nix-bitcoin check the FAQ or submit an issue.
There's also a Matrix room at #general:nixbitcoin.org and a #nix-bitcoin IRC channel on libera.
We are always happy to help.