concur_hackday_2020

Project setup

1. Node.js 12.15.0 (nvm use)
2. Install dependencies usingyarn
3. Install Ganache (fake Ethereum), https://www.trufflesuite.com/ganache
4. Run yarn run truffle migrate
5. Check out HelloWorld example & tests
6. Run tests using yarn run truffle test
7. Start hacking!

Deploy to public Blockchain

To deploy to public Rinkeby test network, run yarn run truffle migrate --network rinkeby

Connect application to deployed contract

Use https://github.com/ethereum/web3.js/ library

Connection to Blockchain via the public infura API:

const Web3 = require("web3")
 
const web3 = new Web3(new Web3.providers.HttpProvider("https://mainnet.infura.io/v3/YOUR_PROJECT_ID"))

Check Web3.js API to interact with contract on chain: https://web3js.readthedocs.io/en/v1.2.6/