Self-Hosted RGB Lightning Node

The RGB Lightning Node (RLN) is an RGB-enabled Lightning Network daemon built on top of LDK. It lets you open payment channels that carry RGB assets and route RGB-denominated payments across the network with the same user experience and security model as standard Bitcoin Lightning payments.

RLN is early beta software. Run it on regtest or testnet first. The maintainers take no responsibility for loss of funds.

Source repository: https://github.com/UTEXO-Protocol/rgb-lightning-nodeFull OpenAPI / Swagger reference: https://utexo-protocol.github.io/rgb-lightning-node

Prerequisites

Before starting, make sure you have the following available:

Dependency	Purpose
bitcoind	Bitcoin full node the RLN daemon connects to
Electrum or Esplora indexer	Required for UTXO lookups
RGB Proxy Server	Relay for RGB state transitions (see rgb-proxy-server)
Rust toolchain (stable)	Needed to build from source
Docker(optional)	For the containerised setup and regtest helper scripts

Installation

Build from Source

Clone the repository with its submodules:

git clone https://github.com/UTEXO-Protocol/rgb-lightning-node \
  --recurse-submodules --shallow-submodules

Install the rgb-lightning-node binary:

cargo install --locked --path .

Docker Image

Build the Docker image locally:

docker build -t rgb-lightning-node .

Running the Node

Each RLN daemon is started with rgb-lightning-node and requires the following arguments:

Flag	Description
`<data-dir>`	Directory where node state is persisted
`--daemon-listening-port`	Port for the REST API
`--ldk-peer-listening-port`	Port for Lightning peer connections
`--network`	One of `regtest`, `signet`, `signetcustom`, `testnet`, `testnet4`, or `mainnet`
`--disable-authentication`	Skip token auth (development only)
`--root-public-key`	Public key used to verify Biscuit tokens (production)

Regtest (Local Development)

Start the required Docker services (bitcoind, electrs, proxy):

./regtest.sh start

Launch three nodes in separate shells:

# Shell 1
rgb-lightning-node dataldk0/ \
  --daemon-listening-port 3001 \
  --ldk-peer-listening-port 9735 \
  --network regtest \
  --disable-authentication

# Shell 2
rgb-lightning-node dataldk1/ \
  --daemon-listening-port 3002 \
  --ldk-peer-listening-port 9736 \
  --network regtest \
  --disable-authentication

# Shell 3
rgb-lightning-node dataldk2/ \
  --daemon-listening-port 3003 \
  --ldk-peer-listening-port 9737 \
  --network regtest \
  --disable-authentication

Regtest unlock parameters:

bitcoind_rpc_username: user
bitcoind_rpc_password: password
bitcoind_rpc_host:     localhost
bitcoind_rpc_port:     18443
indexer_url:           127.0.0.1:50001
proxy_endpoint:        rpc://127.0.0.1:3000/json-rpc

Regtest Helper Commands

# Fund a node — first get an address via POST /address, then:
./regtest.sh sendtoaddress <address> <amount>

# Mine blocks
./regtest.sh mine

# Stop services and clean data
./regtest.sh stop

# Full help
./regtest.sh -h

Regtest with Docker

To run a node inside Docker while using the shared regtest network:

docker run \
  --rm -it \
  -p 3001:3001 \
  -v RLNdata1:/RLNdata \
  --network rgb-lightning-node_default \
  rgb-lightning-node \
  --daemon-listening-port 3001 \
  --ldk-peer-listening-port 9735 \
  --network regtest \
  --disable-authentication \
  RLNdata

Data is persisted in the RLNdata1 volume. To start fresh:

docker volume rm RLNdata1

When unlocking a node in this mode use:

bitcoind_rpc_host: bitcoind
bitcoind_rpc_port: 18443
indexer_url:       electrs:50001
proxy_endpoint:    rpc://proxy:3000/json-rpc

Testnet3

No local Docker services needed — the node uses public infrastructure:

rgb-lightning-node dataldk0/ \
  --daemon-listening-port 3001 \
  --ldk-peer-listening-port 9735 \
  --network testnet \
  --disable-authentication

Testnet3 unlock parameters:

bitcoind_rpc_username: user
bitcoind_rpc_password: password
bitcoind_rpc_host:     electrum.iriswallet.com
bitcoind_rpc_port:     18332
indexer_url:           ssl://electrum.iriswallet.com:50013
proxy_endpoint:        rpcs://proxy.iriswallet.com/0.2/json-rpc

Testnet4

Same as testnet3, with the following differences:

--network testnet4
bitcoind_rpc_port: 18443
indexer_url:       ssl://electrum.iriswallet.com:50053

Authentication

RLN uses Biscuit tokens for API authentication. For production deployments never use --disable-authentication.

One-Time Setup

Install the Biscuit CLI and generate a root keypair:

cargo install biscuit-cli

# Generate a keypair (prints both public and private keys)
biscuit keypair

# Or export only the private key to a file
biscuit keypair --only-private-key > private-key-file

# Derive the public key later
biscuit keypair --from-file private-key-file --only-public-key

Store your private key in a secret manager (e.g. HashiCorp Vault, AWS Secrets Manager). Anyone with the private key can mint valid tokens.

Start the node with the public key:

rgb-lightning-node dataldk0/ \
  --daemon-listening-port 3001 \
  --ldk-peer-listening-port 9735 \
  --network testnet \
  --root-public-key <YOUR_PUBLIC_KEY>

Minting Tokens

Three built-in roles are available: Admin (full access):

echo 'role("admin");' \
  | biscuit generate --private-key-file private-key-file -

Read-only (GET endpoints only):

echo 'role("read-only");' \
  | biscuit generate --private-key-file private-key-file -

Custom (specific endpoints only):

echo 'role("custom"); right("api", "/nodeinfo"); right("api", "/networkinfo");' \
  | biscuit generate --private-key-file private-key-file -

Add an expiry date to any token:

echo 'role("admin"); check if time($t), $t <= 2025-12-31T00:00:00Z;' \
  | biscuit generate --private-key-file private-key-file -

Using Tokens

Pass the token in the Authorization header:

curl -H "Authorization: Bearer <TOKEN>" \
  http://localhost:3001/nodeinfo

In the Swagger UI click the Authorize (lock) button, paste the token, and click Authorize.

Revoking Tokens

To revoke a token before its expiry:

curl -X POST \
  -H "Authorization: Bearer <ADMIN_TOKEN>" \
  -H "Content-Type: application/json" \
  -d '{"token": "<TOKEN_TO_REVOKE>"}' \
  http://localhost:3001/revoketoken

Using the REST API

Once a daemon is running, interact with it via its REST API. Example — issue an RGB asset:

curl -X POST \
  -H "Content-Type: application/json" \
  -d '{"ticker": "USDT", "name": "Tether", "amounts": [666], "precision": 0}' \
  http://localhost:3001/issueassetnia

Key Endpoints

Endpoint	Method	Description
`/init`	POST	Initialise and unlock the node
`/unlock`	POST	Unlock a locked node
`/lock`	POST	Lock the node
`/nodeinfo`	GET	Return node identity and status
`/networkinfo`	GET	Return network-level info
`/btcbalance`	POST	Get on-chain BTC balance
`/address`	POST	Generate a new Bitcoin address
`/openchannel`	POST	Open an RGB payment channel
`/closechannel`	POST	Close a channel
`/listchannels`	GET	List all channels
`/connectpeer`	POST	Connect to a Lightning peer
`/listpeers`	GET	List connected peers
`/lninvoice`	POST	Create a Lightning invoice
`/sendpayment`	POST	Pay a Lightning invoice
`/rgbinvoice`	POST	Create an RGB invoice
`/sendrgb`	POST	Send RGB assets on-chain
`/issueassetnia`	POST	Issue a new NIA RGB asset
`/issueassetcfa`	POST	Issue a CFA RGB asset
`/listassets`	POST	List all RGB assets
`/assetbalance`	POST	Get balance of a specific asset
`/backup`	POST	Create an encrypted backup
`/restore`	POST	Restore from an encrypted backup
`/shutdown`	POST	Gracefully stop the daemon

The complete list of endpoints with request/response schemas is available in the interactive Swagger UI at https://utexo-protocol.github.io/rgb-lightning-node.

Running a Local Swagger UI

You can also expose the OpenAPI spec locally:

docker run -it \
  -p 8246:8080 \
  -e SWAGGER_JSON=/var/specs/openapi.yaml \
  -v $PWD/openapi.yaml:/var/specs/openapi.yaml \
  swaggerapi/swagger-ui

Open http://localhost:8246 in your browser. If a daemon is running on one of the example ports you can call the APIs directly from the UI.

Running Tests

Integration tests use the same regtest services as regtest.sh (they cannot run simultaneously):

cargo test

Production Checklist

Secure your private key

Store the Biscuit issuer private key in a dedicated secret manager. Never commit it to version control.

Enable authentication

Remove --disable-authentication and pass --root-public-key when starting the daemon.

Restrict network access

Expose only the daemon REST port (default 3001) to trusted clients. Firewall the LN peer port (9735) as appropriate.

Persist data

Mount the node data directory on durable storage (e.g. a named Docker volume or a cloud disk) to survive container restarts.

Monitor the daemon

Poll GET /nodeinfo and GET /networkinfo periodically to verify the node is reachable and in sync.

Backup regularly

Call POST /backup on a schedule and store the encrypted backup off-node.

Rotate tokens

Issue short-lived tokens with expiry dates and rotate them regularly. Revoke compromised tokens immediately via POST /revoketoken.

What Utexo Is

Getting Started

Product Suite

API Reference

Prerequisites

Installation

Build from Source

Docker Image

Running the Node

Regtest (Local Development)

Regtest Helper Commands

Regtest with Docker

Testnet3

Testnet4

Authentication

One-Time Setup

Minting Tokens

Using Tokens

Revoking Tokens

Using the REST API

Key Endpoints

Running a Local Swagger UI

Running Tests

Production Checklist

References

​Prerequisites

​Installation

​Build from Source

​Docker Image

​Running the Node

​Regtest (Local Development)

​Regtest Helper Commands

​Regtest with Docker

​Testnet3

​Testnet4

​Authentication

​One-Time Setup

​Minting Tokens

​Using Tokens

​Revoking Tokens

​Using the REST API

​Key Endpoints

​Running a Local Swagger UI

​Running Tests

​Production Checklist

​References

Prerequisites

Installation

Build from Source

Docker Image

Running the Node

Regtest (Local Development)

Regtest Helper Commands

Regtest with Docker

Testnet3

Testnet4

Authentication

One-Time Setup

Minting Tokens

Using Tokens

Revoking Tokens

Using the REST API

Key Endpoints

Running a Local Swagger UI

Running Tests

Production Checklist

References