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bch-js is a JavaScript npm library for creating web and mobile apps that can interact with the Bitcoin Cash (BCH) and eCash (XEC) blockchains. bch-js contains a toolbox of handy tools, and an easy API for talking with bch-api REST API. FullStack.cash offers paid cloud access to bch-api. You can run your own infrastructure by following documentation on CashStack.info.

Quick Start Videos:

Here are two YouTube walk-through videos to help you get started:

Quick Links

Quick Notes

  • Install library: npm install @psf/bch-js

  • Instantiate the library in your code:

const BCHJS = require("@psf/bch-js")
let bchjs = new BCHJS() // Defaults to BCHN network.

This library is intended to be paired with the bch-api REST API, and the infrastructure provided by FullStack.cash. The restURL property can be changed to work with different Bitcoin Cash networks:

API Key (JWT Token)

The bch-api REST API hosted by FullStack.cash uses JWT tokens to pay for increased rate limits when interacting with the back end server. See this article if you want to understand the system-as-a-whole. The JWT token can be fed to bch-js implicitly or explicitly.

  • Implicitly: bch-js will detect your JWT token if you set the BCHJSTOKEN environment variable.
  • Explicitly: You can directly feed in the JWT token with the apiToken property when instantiating the library. Here is an example:
const BCHJS = require("@psf/bch-js")
let bchjs = new BCHJS({
  restURL: 'https://bchn.fullstack.cash/v5/',
  apiToken: 'eyJhbGciO...' // Your JWT token here.

Gatsby & Web Apps

minimal-slp-wallet is a minimal wallet 'engine' that incorporates bch-js. It's compiled with Browserify for front end apps.

gatsby-theme-bch-wallet is a Gatsby Theme and bch-wallet-starter is a Gatsby Starter for building web wallets using minimal-slp-wallet.

This gist shows how to include minimal-slp-wallet into a basic web page without using a framework.


  • ECMAScript 2017 standard JavaScript used instead of TypeScript. Works natively with node.js v10 or higher.

  • Full SLP tokens support: bch-js has full support for all SLP token functionality, including send, mint, and genesis transactions. It also fully supports all aspects of non-fugible tokans (NFTs).

  • Semantic Release for continuous delivery using semantic versioning.

  • IPFS and Radicle uploads of all files and dependencies, to backup dependencies in case they are ever inaccessible from GitHub or npm.


Full documentation for this library can be found here:

bch-js uses APIDOC so that documentation and working code live in the same repository. To generate the documentation:

  • npm run docs
  • Open the generated docs/index.html file in a web browser.


Have questions? Need help? Join our community support Telegram channel


This open source software is developed and maintained by the Permissionless Software Foundation. If this library provides value to you, please consider making a donation to support the PSF developers:


IPFS & Radicle Releases

Copies of this repository are also published on IPFS.

  • v6.2.10: bafybeifsioj3ba77u2763nsyuzq53gtbdxsnqpoipvdl4immj6ytznjaoy
  • (with dependencies, node v14.18.2 and npm v8.8.0): bafybeihfendd4oj6uxvvecm7sluobwwhpb5wdcxhvhmx56e667nxdncd4a

They are also posted to the Radicle:

  • v6.2.10: rad:git:hnrkkroqnbfwj6uxpfjuhspoxnfm4i8e6oqwy






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