This repository includes the specification for a two-way bridge between Polkadot and Bitcoin. The bridge implements Bitcoin-backed tokens on a Polkadot parachain. The concept of Bitcoin-backed tokens is based on Cryptocurrency-backed Assets.

The specification consists of two parts:

1. XCLAIM(BTC,DOT) Bitcoin-backed tokens : The protocols and functions required to issue and redeem tokens as well as management of vaults.
2. BTC-Relay: The component that is used to verify Bitcoin transactions on the Polkadot parachain.

• Website
• PDF

• Website
• PDF

You can contribute to this project. The following instructions will get you started with a local development environment.

The project is built with Sphinx. Install the requirements with pip install -r requirements.txt.

Change into either the btcrelay-spec or polkabtc-spec folder to work on either of the two specifications. To have Sphinx automatically detect changes to .rst files and serve the latest changes in the browser, run autobuild.sh.

• PolkaBTC will be served at http://127.0.0.1:8000/
• BTC-Relay will be served at http://127.0.0.1:9000/

You will have to have the required LaTeX packages installed to build the LaTeX files and export the document to PDF.

You can then run latexbuild.sh [DOCUMENT] where the document is either polkabtc-spec, btcrelay-spec, or blank. Blank builds both specifications.