How to deploy smart contract

smartcontract, ethereum, deploy, web3js, parity 1 min edit

Deploying smart contracts

I would like to describe three different ways of deploying Smart Contracts. The first one and the very basic one is

Via web interface

When you open parity UI you need first enable Contracts tab in Settings tab (it’s disabled by default). If you open Settings you should see: Enable contracts tab on Parity UI

please check


Via web3-js

const Web3 = require('web3');

const nodeURL = "http://localhost:8540";
const bytecode = "..."; //todo
const abi = [{}]; //todo
const contractOwnerAddress = "0x001a88dfd34c33b8i89a98al8766aa665c81d191"; //todo

var web3 = new Web3(new Web3.providers.HttpProvider(nodeURL));
var contract = web3.eth.contract(abi);
var params = {from: contractOwnerAddress, gas: 2310334, data: bytecode}

var contractInstance =

before please unlock an account

curl --data '{"method":"personal_unlockAccount","params":["0xXX","your password",null],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8540

Deploy via transaction

import {Api} from '@parity/parity.js'

const bytecode = ''; //todo
const contractOwnerAddress = '0x13123123123todo'; //todo
const contractOwnerPassword = 'somesecretpassword'; //todo
const gas = '0x199901' //todo
const transport = new Api.Transport.Http(parityUrl)

let hash = await transport.execute('personal_sendTransaction', {
    from: contractOwnerAddress,
    data: bytecode,
    gas: gas
}, contractOwnerPassword)