saurfang

var abiDefinition = [{"constant":false,"inputs":[{"name":"nickname","type":"bytes32"}],"name":"setNickname","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"nicknameOf","outputs":[{"name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"}];
var CaptureTheEther = web3.eth.contract(abiDefinition);
// load from deployed contract. replace the address with yours
var cte = CaptureTheEther.at("0x71c46Ed333C35e4E6c62D32dc7C8F00D125b4fee");
// call `setNickname` function
cte.setNickname("your name", console.log);

saurfang

// construct contract object with ABI
var abiDefinition = [{"constant":false,"inputs":[{"name":"n","type":"uint8"}],"name":"guess","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"isComplete","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":true,"stateMutability":"payable","type":"constructor"}];
var GuessTheNumberChallenge = web3.eth.contract(abiDefinition);
// load from deployed contract. replace the address with yours
var challenge = GuessTheNumberChallenge.at("0xb13afE1D0195a5C7876eE3e297a06A50b6f847A8");
// call `guess` function
challenge.guess(42, {value: web3.toWei(1, 'ether')}, console.log);

saurfang

var answerHash = '0xdb81b4d58595fbbbb592d3661a34cdca14d7ab379441400cbfa1b78bc447c365';

// iterate through all possible uint8
for (var i = 0; i < 2 ** 8; i++) {
  var hex = i.toString(16);
  var padUint8 = web3.padLeft(hex, 2);
  var hash = web3.sha3(padUint8, {encoding: 'hex'});
  if (hash == answerHash) {
    console.log(`Found: ${i}`);
    break;

saurfang

// transaction hash of contract deploy
var txHash = '0x75acf5e313e2c06e84d9e2609297b6a6f959773e7a4380daa66cc39ba59d6104';
// get transaction
web3.eth.getTransaction('0x75acf5e313e2c06e84d9e2609297b6a6f959773e7a4380daa66cc39ba59d6104', (err, tx) => {
  console.log(tx);
  
  var blockNumber = tx.blockNumber;
  web3.eth.getBlock(blockNumber, (err, block) => {
    console.log(block);
    

saurfang

const GuessTheNewNumberChallenge = artifacts.require('GuessTheNewNumberChallenge');

contract('GuessTheNewNumberChallenge', ([account]) => {
  it('should be completed', async () => {
    let challenge = await GuessTheNewNumberChallenge.new({value: web3.toWei(1, 'ether')});

    assert(
      await challenge.isComplete() === true,
      'Challenge has not been completed!'
    );

saurfang

const GuessTheNewNumberChallenge = artifacts.require('GuessTheNewNumberChallenge');
const GuessTheNewNumberSolver = artifacts.require('GuessTheNewNumberSolver');

contract('GuessTheNewNumberSolver', ([account]) => {
  it('should solve the challenge', async () => {
    let challenge = await GuessTheNewNumberChallenge.new({value: web3.toWei(1, 'ether')});
    let solver = await GuessTheNewNumberSolver.new();

    assert(
      await solver.isComplete(challenge.address) === true,

saurfang

const GuessTheNewNumberChallenge = artifacts.require('GuessTheNewNumberChallenge');
const GuessTheNewNumberSolver = artifacts.require('GuessTheNewNumberSolver');

contract('GuessTheNewNumberSolver', ([account]) => {
  it('should solve the challenge', async () => {
    let challenge = await GuessTheNewNumberChallenge.new({value: web3.toWei(1, 'ether')});
    let solver = await GuessTheNewNumberSolver.new();

    await solver.guess(challenge.address, {value: web3.toWei(1, 'ether')});

saurfang

pragma solidity ^0.4.21;

import "./GuessTheNewNumberChallenge.sol";

contract GuessTheNewNumberSolver {
    address owner;

    function GuessTheNewNumberSolver() public {
        owner = msg.sender;
    }

saurfang

const PredictTheFutureChallenge = artifacts.require('PredictTheFutureChallenge');
const PredictTheFutureSolver = artifacts.require('PredictTheFutureSolver');

contract('PredictTheFutureSolver', ([account]) => {
  it('should solve the challenge', async () => {
    let challenge = await PredictTheFutureChallenge.new({value: web3.toWei(1, 'ether')});
    let solver = await PredictTheFutureSolver.new();
    let guess = 0;

    await solver.lockInGuess(challenge.address, guess, {value: web3.toWei(1, 'ether')});

saurfang

pragma solidity ^0.4.21;

contract Miner {
    uint public blockNumber;
    uint public blocks;

    function Miner() public {
        reset();
    }