BOB is a Bitcoin-augmented rollup bringing experimentation and freedom of choice to builders to make a real-world impact. BOBs vision is to onboard the next billion users to Bitcoin.

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BOB is an open-source project. We welcome contributions of all sorts. There are many ways to help, from reporting issues, contributing code, and helping us improve our community.

We use foundry extensively for maintaining and testing this contract suite:

$ forge build

$ forge test

$ forge fmt

To deploy the relay contract to a local environment for testing use our convenience script here:

# start local ethereum testnet node
docker-compose up anvil
# run script to deploy the relay contract
cd sdk
yarn run deploy-relay --init-height 2016 --private-key dev-0 --dev --network testnet

The initialization height should be a multiple of 2016 with at least one subsequent retarget (i.e. if using 2016 as the starting height, blocks 4031-4032 must exist).