CAT Token Box

A reference implementation of the Covenant Attested Token (CAT) protocol on BTC signet and Fractal, where OP_CAT is re-activated.

Out of the Box

There are three major packages implementing the protocol and tools for CAT out of the box.

packages
├── cli
├── common
├── smartcontracts
└── tracker

• smartcontracts

Smart contracts implementing the CAT protocol written in sCrypt.

• tracker

A tracker service that keeps track of CAT related UTXOs, including minter and token. It exposes them as REST APIs for application integration.

• cli

A Command Line Interface (CLI) tool that can deploy / mint / transfer CAT protocol tokens.

Prerequisites

• Node.js Environment

Make sure you have Node.js >=20 and yarn installed.

You can follow the guide here to install Node.js.

Also, you can check its version use this command:

node -v

Use this command to install yarn if it's not installed:

npm i -g yarn

• Full Node
• Postgres Database

You can install and run the above two components on your own or follow the instructions here in tracker package to start them in docker containers.

How to Run the Project

⚠️ Warning: Please only use Taproot address (starting with bc1p) for all CAT protocol transactions, including fee inputs, change outputs, and token owner address. Failing to do so may result in loss of funds.

1. Build the project

Run this command under the project's root directory to build the whole project:

yarn install && yarn build

2. Run the tracker service

Follow the instructions here to setup and start the tracker service.

3. Execute CLI commands

After the tracker syncs up to the latest block, you can execute all kinds of commands provided by the cli package to interact with CAT protocol tokens. Refer to this document to see more details.

Development & Test

Run this command under the root directory to run all tests from these packages:

turbo test