GrinSwap proof of concept

This code provides a proof of concept for executing Grin-BTC/ETH atomic swaps. It was used to perform the first swaps on Grin testnet (as far as we know), read more about it here. Note that this code is definitely not production-ready and usage is at your own risk.

Building

Getting this code to run is a bit involved, it has not been optimized for user friendliness. The steps to take are:

1. Download a copy of this repository
2. Clone the Grin fork of secp256k1-zkp
3. Copy build_secp256k1-zkp.sh to the secp25k1-zkp directory
4. Excute it to build the library
5. Copy the build/include and build/lib directories to the grinswap directory
6. Create and start a venv with python 3.6, and install cffi eth-hash pysha3 with pip
7. Execute ./build to build the python cffi library

Usage

Executing a swap is for now a very manual process, requiring sending files between the seller and buyer multiple times.

1. Start the venv
2. Create a wallet directory and add a wallet.seed file with a random seed
3. If you are selling Grin, you need to have some in your wallet. Run ./example simple_tx receive and send some Grin to it, on port 17175
4. To get started with the swap, run ./swap sell and follow the directions Any Grin transactions can be submitted with ./example <filename> <optional node url>

License

This code is released under the Apache License 2.0