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Trustless BTC<>ETH Swaps Using ZK Proofs

Repo template: Bonsai Foundry Template

Note: This software is not production ready. Do not use in production.

Dependencies

First, [install Rust] and [Foundry], and then restart your terminal. Next, you will need to install the cargo risczero tool. We'll use cargo binstall to get cargo-risczero installed. See [cargo-binstall] for more details.

cargo install cargo-binstall
cargo binstall cargo-risczero

Next we'll need to install the risc0 toolchain with:

cargo risczero install

Test Your Project

  • Use cargo build to test compilation of your zkVM program.
  • Use cargo test to run the tests in your zkVM program.
  • Use forge test to test your Solidity contracts and their interaction with your zkVM program.

Configuring Bonsai

With the Bonsai proving service, you can produce a [Groth16 SNARK proof] that is verifiable on-chain. You can get started by setting the following environment variables with your API key and associated URL.

export BONSAI_API_KEY="YOUR_API_KEY" 
export BONSAI_API_URL="BONSAI_URL"

Now if you run forge test with RISC0_DEV_MODE=false, the test will run as before, but will additionally use the fully verifying BonsaiRelay contract instead of BonsaiTestRelay and will request a SNARK receipt from Bonsai.

RISC0_DEV_MODE=false forge test