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Bitcoin S

Bitcoin S is an open-source Scala toolkit for building Bitcoin and Lightning applications on the JVM. Its modular libraries cover cryptography, chain access, wallets, key management, node components, fee providers, DLCs and RPC connections to Bitcoin Core, Eclair and LND. The repository also documents a Docker-based backend and wallet frontend setup.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Bitcoin S — OpenViST project profile in Developer Tools.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use Bitcoin S when developing JVM applications that need modular Bitcoin or Lightning capabilities, or when you want to start the repository's documented Docker wallet environment.

Who it is for

  • Scala developers building Bitcoin or Lightning applications on the JVM.
  • Teams adding wallet, key-management, chain or node-RPC components to an application.
  • Developers exploring Bitcoin-S modules for DLC or node-related projects.

Documented uses

  • Add Bitcoin-S libraries to a Scala project using the documented dependency declarations.
  • Build wallet functionality from wallet and key-manager modules.
  • Connect an application to Eclair or LND through the listed RPC modules.
  • Start the documented Docker environment and access its local wallet frontend.
Before you choose

Requirements & limits

  • The project is written in Scala and its documented library dependencies use Scala's libraryDependencies syntax.
  • The repository lists separate modules for Bitcoin Core, Eclair and LND RPC integration.
  • The Docker setup starts backend syncing and exposes a wallet frontend at localhost:3002.
  • The project is MIT-licensed.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Add Bitcoin-S modules to a Scala project

Declare selected Bitcoin-S libraries as dependencies in a Scala project.

Before you start

  • A Scala project using the documented libraryDependencies syntax.

Steps

  1. Choose the required Bitcoin-S modules, such as bitcoin-s-wallet and bitcoin-s-key-manager for wallet-related components.

  2. Add the selected org.bitcoin-s dependencies using the README's libraryDependencies examples and version.

Expected outcome

The selected Bitcoin-S modules are declared as project dependencies.

Guide limitations

  • The dependency declarations do not define a complete application design or integration procedure.
Documentation 1 ↗
Source-based practical guide

Start the documented wallet environment with Docker

Start the repository's Docker environment and open its local wallet frontend.

Before you start

  • Docker and Docker Compose.

Steps

  1. From the bitcoin-s repository, run APP_PASSWORD=topsecret docker compose up.

  2. Allow the environment to start syncing the backend.

  3. Visit localhost:3002 for the wallet web frontend.

Expected outcome

The Docker environment starts the backend sync and exposes the wallet frontend locally.

Guide limitations

  • The repository does not describe further wallet configuration in this run instruction.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
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Sources checked
10 October 2026
Original website title
bitcoin-s/bitcoin-s · Official homepage title · retained in its source language
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