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The project won the Consensys Sponsorship Prize on the ETHSanFrancisco hackathon. Created by HU Yao-Chieh, Tina Lee, and Kevin Gau.

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Turing-Space/BTC-ETH-Cross-Chain-Atomic-Swap

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BTC - ETH Cross Chain Atomic Swap

The project won the Consensys Sponsorship Prize on the ETHSanFrancisco hackathon.

We built the CrossChain Swap environments for Bitcoin and Ethereum respectively. We implemented the mvp of the idea as a demo to visualize the BTC/ETH swapping process. Description on project deatils is available on Devpost with the Demo Video on Youtube

End-to-end Test Case

  1. Open Ethereum private node: ganache-cli
  2. Open Bitcoin private node (after downloading bitcoin core): bitcoind -txindex -regtest -reindex -rpcpassword=local321 -rpcuser=bitcoin -rpcport=18332
  3. Host the html site on port 9000: serve-https /Users/tingtinglee/hack/WEB-v2-BTC/examples/swap/swap-e2e-local.html -p 9000
  4. In the browser, GOTO https://localhost:9000/examples/swap/_swap-e2e-local.html
  5. Fill in Bitcoin params: 100000 (or any)
  6. Click on Generate Secret

A Initiates SWAP on Bitcoin

  1. Copy over Secret Hash to Bitcoin Initiate Swap
  2. Click on Initiate Swap

B Initiates SWAP on Ethereum

  1. Fill in Secret Hash at Ethereum Initiate Swap
  2. Click on Initiate Swap

A Claims SWAP on Ethereum

  1. Fill in Secret from A
  2. Fill in Initiate Transaction Hash from B's Initiation on Ethereum

B Claims SWAP on Bitcoin

  1. Fill in Secret from A
  2. Fill in Initiate Transaction Hash from A's Initiation on Bitcoin

Addresses

  • A's BTC address: muWrnsfYwzv24sAuC1t45JssWttHUtA162
  • A's ETH address: 0x5a3df33ebab91eb80712493c8ad30855b882c669
  • B's BTC address: muT9jzX9Jws7X9xE6JZkXcNrzNAfQRDaj9
  • B's ETH address: 0x1cdf3aac5329aa9d1dee420468a72bad24055885

Bitcoin tips

Host Bitcoin private net

bitcoind -txindex -regtest -reindex -rpcpassword=local321 -rpcuser=bitcoin -rpcport=18332

Interact with the Bitcoin private net via console

bitcoin-cli -rpcpassword=local321 -rpcuser=bitcoin -rpcport=18332 <function_name> <function_param>

Generate a Bitcoin address

bitcoin-cli -rpcpassword=local321 -rpcuser=bitcoin -rpcport=18332 getrawchangeaddress "legacy"

get help

bitcoin-cli -rpcpassword=local321 -rpcuser=bitcoin -rpcport=18332 help

import private key

bitcoin-cli -rpcpassword=local321 -rpcuser=bitcoin -rpcport=18332 importprivkey cVuHNLamShn9pJEVQLy76fdzLPZxgfhenVdK7wo1vBweue4x2dHv
bitcoin-cli -rpcpassword=local321 -rpcuser=bitcoin -rpcport=18332 importprivkey cTYiTKhEujcjM4xqgzRHbpCc9Mbtpvqd8VpsRUB6aXygBgg5JsYp

generate 100 blocks

bitcoin-cli -rpcpassword=local321 -rpcuser=bitcoin -rpcport=18332 generate 101

fund an address

bitcoin-cli -rpcpassword=local321 -rpcuser=bitcoin -rpcport=18332 sendtoaddress muT9jzX9Jws7X9xE6JZkXcNrzNAfQRDaj9 10

Examine on console

Check bitcoin balance

bitcoin.getBalance(["muT9jzX9Jws7X9xE6JZkXcNrzNAfQRDaj9"]).then(console.log)

Chain Abstraction Layer

ChainAbstractionLayer Standard Code Style MIT License ChainAbstractionLayer

⚠️ This project is under heavy development. Expect bugs & breaking changes.

Query different blockchains with a single and simple interface.

Installation

npm install @liquality/chainabstractionlayer

Error: Cannot find module 'babel-runtime/core-js/get-iterator'

Issues to track: LedgerHQ/ledgerjs/issues/211, LedgerHQ/ledgerjs/issues/218

npm install babel-runtime

Usage

import { Client, providers } from '@liquality/chainabstractionlayer'

const { BitcoinRPCProvider } = providers.bitcoin

const bitcoin = new Client()
bitcoin.addProvider(new BitcoinRPCProvider('http://localhost:8080', 'bitcoin', 'local321'))

bitcoin
  .generateBlock(1) // returns Promise
  .then(console.log) // Array<BlockHash>

Community

Liquality Gitter

Try ChainAbstractionLayer in Browser

Chain Wallet Provider
Ethereum Ledger Source & Demo
MetaMask Source & Demo
Bitcoin Ledger Source & Demo

Documentation

The documentation is being generated by esdoc. Github Page hosted documentation is available at liquality.github.io/chainabstractionlayer

If you want to build documentation locally;

npm run build:docs

License

MIT

About

The project won the Consensys Sponsorship Prize on the ETHSanFrancisco hackathon. Created by HU Yao-Chieh, Tina Lee, and Kevin Gau.

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