atomicswap package

Overview

Package atomicswap implements a hash time-locked contract (HTLC) for atomic swaps between native coins (ugnot) or GRC20 tokens. An atomic swap allows two parties to exchange assets in a trustless way, where either both transfers happen or neither does. The process works as follows: 1. Alice wants to swap with Bob. She generates a secret and creates a swap with Bob's address and the hash of the secret (hashlock). 2. Bob can claim the assets by providing the correct secret before the timelock expires. The secret proves Bob knows the preimage of the hashlock. 3\. If Bob doesn't claim in time, Alice can refund the assets back to herself. Example usage for native coins: // Alice creates a swap with 1000ugnot for Bob secret := "mysecret" hashlock := hex.EncodeToString(sha256.Sum256([]byte(secret))) id, _ := atomicswap.NewCoinSwap(bobAddr, hashlock) // -send 1000ugnot // Bob claims the swap by providing the secret atomicswap.Claim(id, "mysecret") Example usage for GRC20 tokens: // Alice approves the swap contract to spend her tokens token.Approve(swapAddr, 1000) // Alice creates a swap with 1000 tokens for Bob id, _ := atomicswap.NewGRC20Swap(bobAddr, hashlock, "gno.land/r/demo/token") // Bob claims the swap by providing the secret atomicswap.Claim(id, "mysecret") If Bob doesn't claim in time (default 1 week), Alice can refund: atomicswap.Refund(id)