Edit this configuration file to define what should be installed on

your system. Help is available in the configuration.nix(5) man page

and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, lib, ... }: { imports = [ <nix-bitcoin/modules/presets/secure-node.nix>

# FIXME: The hardened kernel profile improves security but
# decreases performance by ~50%.
# Turn it off when not needed.
<nix-bitcoin/modules/presets/hardened.nix>
#
# You can enable the hardened-extended preset instead to further improve security
# at the cost of functionality and performance.
# See the comments at the top of `hardened-extended.nix` for further details.
# <nix-bitcoin/modules/presets/hardened-extended.nix>

# FIXME: Uncomment the next line to import your hardware configuration. If so,
# add the hardware configuration file to the same directory as this file.
#./hardware-configuration.nix

];

FIXME: Enable modules by uncommenting their respective line. Disable

modules by commenting out their respective line.

BITCOIND

Bitcoind is enabled by default via secure-node.nix.

Set this option to enable pruning with a specified MiB value.

clightning is compatible with pruning. See

https://github.com/ElementsProject/lightning/#pruning for more information.

LND and electrs are not compatible with pruning.

services.bitcoind.prune = 100000;

Set this to accounce the onion service address to peers.

The onion service allows accepting incoming connections via Tor.

nix-bitcoin.onionServices.bitcoind.public = true;

You can add options that are not defined in modules/bitcoind.nix as follows

services.bitcoind.extraConfig = ''

maxorphantx=110

'';

CLIGHTNING

Enable clightning, a Lightning Network implementation in C.

services.clightning.enable = true;

Set this to create an onion service by which clightning can accept incoming connections

via Tor.

The onion service is automatically announced to peers.

nix-bitcoin.onionServices.clightning.public = true;

== Plugins

See ../README.md (Features → clightning) for the list of available plugins.

services.clightning.plugins.prometheus.enable = true;

== REST server

Set this to create a clightning REST onion service.

This also adds binary `lndconnect-clightning` to the system environment.

This binary creates QR codes or URLs for connecting applications to clightning

via the REST onion service.

You can also connect via WireGuard instead of Tor.

See ../docs/services.md for details.

services.clightning-rest = {

enable = true;

lndconnect = {

enable = true;

onion = true;

};

LND

Set this to enable lnd, a lightning implementation written in Go.

services.lnd.enable = true;

NOTE: In order to avoid collisions with clightning you must disable clightning or

change the services.clightning.port or services.lnd.port to a port other than

9735.

Set this to create an onion service by which lnd can accept incoming connections

via Tor.

The onion service is automatically announced to peers.

nix-bitcoin.onionServices.lnd.public = true;

Set this to create a lnd REST onion service.

This also adds binary `lndconnect` to the system environment.

This binary generates QR codes or URLs for connecting applications to lnd via the

REST onion service.

You can also connect via WireGuard instead of Tor.

See ../docs/services.md for details.

services.lnd.lndconnect = {

enable = true;

onion = true;

};

WARNING

If you use lnd, you should manually backup your wallet mnemonic

seed. This will allow you to recover on-chain funds. You can run the

following commands after the lnd service starts:

mkdir -p ./backups/lnd/

scp bitcoin-node:/var/lib/lnd/lnd-seed-mnemonic ./backups/lnd/

You should also backup your channel state after opening new channels.

This will allow you to recover off-chain funds, by force-closing channels.

scp bitcoin-node:/var/lib/lnd/chain/bitcoin/mainnet/channel.backup ./backups/lnd/

Alternatively, you can have these files backed up by services.backups below.

RIDE THE LIGHTNING

Set this to enable RTL, a web interface for lnd and clightning.

services.rtl.enable = true;

Set this to add a clightning node interface.

Automatically enables clightning.

services.rtl.nodes.clightning.enable = true;

Set this to add a lnd node interface.

Automatically enables lnd.

services.rtl.nodes.lnd.enable = true;

You can enable both nodes simultaneously.

Set this option to enable swaps with lightning-loop.

Automatically enables lightning-loop.

services.rtl.nodes.lnd.loop = true;

MEMPOOL

Set this to enable mempool, a fully featured Bitcoin visualizer, explorer,

and API service.

services.mempool.enable = true;

Possible options for the Electrum backend server:

- electrs (enabled by default):

Small database size, slow when querying new addresses.

- fulcrum:

Large database size, quickly serves arbitrary address queries.

Enable with:

services.mempool.electrumServer = "fulcrum";

Set this to create an onion service to make the mempool web interface

available via Tor:

nix-bitcoin.onionServices.mempool-frontend.enable = true;

ELECTRS

Set this to enable electrs, an Electrum server implemented in Rust.

services.electrs.enable = true;

FULCRUM

Set this to enable fulcrum, an Electrum server implemented in C++.

Compared to electrs, fulcrum has higher storage demands but

can serve arbitrary address queries instantly.

Before enabling fulcrum, and for more info on storage demands,

see the description of option `enable` in ../modules/fulcrum.nix

services.fulcrum.enable = true;

BTCPayServer

Set this to enable BTCPayServer, a self-hosted, open-source

cryptocurrency payment processor.

services.btcpayserver.enable = true;

Privacy Warning: BTCPayServer currently looks up price rates without

proxying them through Tor. This means an outside observer can correlate

your BTCPayServer usage, like invoice creation times, with your IP address.

Enable this option to connect BTCPayServer to clightning.

services.btcpayserver.lightningBackend = "clightning";

Enable this option to connect BTCPayServert to lnd.

services.btcpayserver.lightningBackend = "lnd";

The lightning backend service is automatically enabled.

Afterwards you need to go into Store > General Settings > Lightning Nodes

and select "the internal lightning node of this BTCPay Server".

Set this to create an onion service to make the btcpayserver web interface

accessible via Tor.

Security WARNING: Create a btcpayserver administrator account before allowing

public access to the web interface.

nix-bitcoin.onionServices.btcpayserver.enable = true;

LIQUIDD

Enable this module to use Liquid, a sidechain for an inter-exchange

settlement network linking together cryptocurrency exchanges and

institutions around the world.

services.liquidd.enable = true;

Liquid can be controlled with command 'elements-cli'.

Hardware wallets

Enable the following to allow using hardware wallets.

See https://github.com/bitcoin-core/HWI for more information.

Ledger must be initialized through the official ledger live app and the Bitcoin app must

be installed and running on the device.

services.hardware-wallets.ledger = true;

Trezor can be initialized with the trezorctl command in nix-bitcoin. More information in

`../docs/services.md`.

services.hardware-wallets.trezor = true;

lightning-loop

Set this to enable lightninglab's non-custodial off/on chain bridge.

services.lightning-loop.enable = true;

loopd (lightning-loop daemon) will be started automatically. Users can

interact with off/on chain bridge using `loop in` and `loop out`.

Automatically enables lnd.

lightning-pool

Set this to enable Lightning Lab's non-custodial batched uniform

clearing-price auction for Lightning Channel Leases.

services.lightning-pool.enable = true;

Use the `pool` command to interact with the lightning-pool service.

Automatically enables lnd.

lightning-pool requires that lnd has a publicly reachable address.

Set this to create a public onion service for lnd.

nix-bitcoin.onionServices.lnd.public = true;

charge-lnd

Set this to enable charge-lnd, a simple policy based fee manager for

LND. With this tool you can set fees to autobalance, recover channel open

costs, use on-chain fees as reference, or just use static fees. You decide.

services.charge-lnd.enable = true;

Define policies as outlined in the project documentation.

services.charge-lnd.policies = ''

'';

JOINMARKET

Set this to enable the JoinMarket service, including its command-line scripts.

These scripts have prefix 'jm-', like 'jm-tumbler'.

Note: JoinMarket has full access to bitcoind, including its wallet functionality.

services.joinmarket.enable = true;

Set this to enable the JoinMarket Yield Generator Bot. You will be able to

earn sats by providing CoinJoin liquidity. This makes it impossible to use other

scripts that access your wallet.

services.joinmarket.yieldgenerator.enable = true;

Set this to enable the JoinMarket order book watcher.

services.joinmarket-ob-watcher.enable = true;

Nodeinfo

Set this to add command `nodeinfo` to the system environment.

It shows info about running services like onion addresses and local addresses.

It is enabled by default when importing `secure-node.nix`.

nix-bitcoin.nodeinfo.enable = true;

Backups

Set this to enable nix-bitcoin's own backup service. By default, it

uses duplicity to incrementally back up all important files in /var/lib to

/var/lib/localBackups once a day.

services.backups.enable = true;

You can pull the localBackups folder with

`scp -r bitcoin-node:/var/lib/localBackups /my-backup-path/`

Alternatively, you can also set a remote target url, for example

services.backups.destination = "sftp://user@host[:port]/[relative|/absolute]_path";

Supply the sftp password by appending the FTP_PASSWORD environment variable

to secrets/backup-encryption-env like so

`echo "FTP_PASSWORD=<password>" >> secrets/backup-encryption-env`

You many also need to set a ssh host and publickey with

programs.ssh.knownHosts."host" = {

hostNames = [ "host" ];

publicKey = "<ssh public from `ssh-keyscan`>";

};

If you also want to backup bulk data like the Bitcoin & Liquid blockchains

and electrs data directory, enable

services.backups.with-bulk-data = true;

netns-isolation (EXPERIMENTAL)

Enable this module to use Network Namespace Isolation. This feature places

every service in its own network namespace and only allows truly necessary

connections between network namespaces, making sure services are isolated on

a network-level as much as possible.

nix-bitcoin.netns-isolation.enable = true;

FIXME: Define your hostname.

networking.hostName = "host"; time.timeZone = "UTC";

services.openssh = { enable = true; settings.PasswordAuthentication = false; }; users.users.root = { openssh.authorizedKeys.keys = [ # FIXME: Replace this with your SSH pubkey "ssh-ed25519 AAAAC3..." ]; };

FIXME: Uncomment this to allow the operator user to run

commands as root with `sudo` or `doas`

users.users.operator.extraGroups = [ "wheel" ];

FIXME: add packages you need in your system

environment.systemPackages = with pkgs; [ vim ];

FIXME: Add custom options (like boot options, output of

nixos-generate-config, etc.):

This value determines the NixOS release from which the default

settings for stateful data, like file locations and database versions

on your system were taken. It's perfectly fine and recommended to leave

this value at the release version of the first install of this system.

Before changing this value read the documentation for this option

(e.g. man configuration.nix or on https://nixos.org/nixos/options.html).

system.stateVersion = "23.05"; # Did you read the comment?

The nix-bitcoin release version that your config is compatible with.

When upgrading to a backwards-incompatible release, nix-bitcoin will display an

an error and provide instructions for migrating your config to the new release.

nix-bitcoin.configVersion = "0.0.85"; }

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Edit this configuration file to define what should be installed on

your system. Help is available in the configuration.nix(5) man page

and in the NixOS manual (accessible by running ‘nixos-help’).

FIXME: Enable modules by uncommenting their respective line. Disable

modules by commenting out their respective line.

BITCOIND

Bitcoind is enabled by default via secure-node.nix.

Set this option to enable pruning with a specified MiB value.

clightning is compatible with pruning. See

https://github.com/ElementsProject/lightning/#pruning for more information.

LND and electrs are not compatible with pruning.

services.bitcoind.prune = 100000;

Set this to accounce the onion service address to peers.

The onion service allows accepting incoming connections via Tor.

nix-bitcoin.onionServices.bitcoind.public = true;

You can add options that are not defined in modules/bitcoind.nix as follows

services.bitcoind.extraConfig = ''

maxorphantx=110

'';

CLIGHTNING

Enable clightning, a Lightning Network implementation in C.

Set this to create an onion service by which clightning can accept incoming connections

via Tor.

The onion service is automatically announced to peers.

nix-bitcoin.onionServices.clightning.public = true;

== Plugins

See ../README.md (Features → clightning) for the list of available plugins.

services.clightning.plugins.prometheus.enable = true;

== REST server

Set this to create a clightning REST onion service.

This also adds binary lndconnect-clightning to the system environment.

This binary creates QR codes or URLs for connecting applications to clightning

via the REST onion service.

You can also connect via WireGuard instead of Tor.

See ../docs/services.md for details.

services.clightning-rest = {

enable = true;

lndconnect = {

enable = true;

onion = true;

};

};

LND

Set this to enable lnd, a lightning implementation written in Go.

services.lnd.enable = true;

NOTE: In order to avoid collisions with clightning you must disable clightning or

change the services.clightning.port or services.lnd.port to a port other than

9735.

Set this to create an onion service by which lnd can accept incoming connections

via Tor.

The onion service is automatically announced to peers.

nix-bitcoin.onionServices.lnd.public = true;

Set this to create a lnd REST onion service.

This also adds binary lndconnect to the system environment.

This binary generates QR codes or URLs for connecting applications to lnd via the

REST onion service.

You can also connect via WireGuard instead of Tor.

See ../docs/services.md for details.

services.lnd.lndconnect = {

enable = true;

onion = true;

};

WARNING

If you use lnd, you should manually backup your wallet mnemonic

seed. This will allow you to recover on-chain funds. You can run the

following commands after the lnd service starts:

mkdir -p ./backups/lnd/

scp bitcoin-node:/var/lib/lnd/lnd-seed-mnemonic ./backups/lnd/

You should also backup your channel state after opening new channels.

This will allow you to recover off-chain funds, by force-closing channels.

scp bitcoin-node:/var/lib/lnd/chain/bitcoin/mainnet/channel.backup ./backups/lnd/

Alternatively, you can have these files backed up by services.backups below.

RIDE THE LIGHTNING

Set this to enable RTL, a web interface for lnd and clightning.

services.rtl.enable = true;

This also adds binary `lndconnect-clightning` to the system environment.

This also adds binary `lndconnect` to the system environment.

see the description of option `enable` in ../modules/fulcrum.nix