DEVNET|Coin Web

This repository contains the website of DEVNET|Coin as well as the truffle framework files for installation and building.

We are running this on the KOVAN ethereum test network.

WebSite

This is a nodejs application. We use web3js for connecting with the blockchain.

We have also created a Dockerfile so the site can be updated quickly and easily.

Truffle

Install Truffle

npm install -g truffle

Compile the contract

The contract is located in contracts/devnetcoin.sol and can be compiled as follows:

cd ~/<repo-root>
truffle compile

To deploy the network we use the Infura network. This way we don't need to run a local blockchain on our server. For instructions on setting this up see this guide.

We use environment variables to set the truffle.json file. These environment variables are:

export INFURA_MNEMONIC="close door open mouth..."
export INFURA_SERVER="https://kovan.infura.io/<your key>"

Once these are set you can deploy the contract on the network with:

truffle migrate --network kovan

Notice the configuration file we use for the truffle.json file where we specify this network:

var HDWalletProvider = require("truffle-hdwallet-provider");
var mnemonic = process.env.INFURA_MNEMONIC;
var server = process.env.INFURA_SERVER;
module.exports = {
  networks: {
    kovan: {
      provider: function() {
        return new HDWalletProvider(mnemonic, server);
      },
      network_id: 42
    }
  }
};

Once the contract is deployed we can now interact with it.