JSON output of Transfer events of Golem token, Ethereum

ethereum-transfer-events.js

// web3 code for Golem smart contract

// Golem token:
// https://etherscan.io/address/0xa74476443119A942dE498590Fe1f2454d7D4aC0d

// Golem Token tx:
// https://etherscan.io/tx/0x6e8e11e694673b0b9135511a8267ff05a8444af7d88aaf043350e6349fdb9bb0

// Golem creation block:
// 2603185

var abi = [{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"golemFactory","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_master","type":"address"}],"name":"setMigrationMaster","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_value","type":"uint256"}],"name":"migrate","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"finalize","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"refund","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"migrationMaster","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"tokenCreationCap","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_agent","type":"address"}],"name":"setMigrationAgent","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"migrationAgent","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"fundingEndBlock","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalMigrated","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"tokenCreationMin","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"funding","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"tokenCreationRate","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"fundingStartBlock","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"create","outputs":[],"payable":true,"type":"function"},{"inputs":[{"name":"_golemFactory","type":"address"},{"name":"_migrationMaster","type":"address"},{"name":"_fundingStartBlock","type":"uint256"},{"name":"_fundingEndBlock","type":"uint256"}],"type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":true,"name":"_to","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":true,"name":"_to","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Migrate","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Refund","type":"event"}];

var providerLocal = "http://localhost:8545";

// Infura nodes doesn’t store events :(
var providerInfura = "https://mainnet.infura.io/diJO3q7ANjcB4l9iW9ph";

var Web3 = require('web3');
web3 = new Web3(new Web3.providers.HttpProvider(providerLocal));

var contract = web3.eth.contract(abi);
var instance = contract.at('0xa74476443119A942dE498590Fe1f2454d7D4aC0d');

console.log('Token name:', instance.name(), ', total supply:', instance.totalSupply());

var event = instance.Transfer({}, {fromBlock: 2607801, toBlock: 2607804}); // or {toBlock: 'latest'}
// event.watch(function(err, res) { console.log(err, res) });

console.log('Transfer event', event);

var allEvents = event.get(function(err, logs) {
  console.log('Logs:\n\n', JSON.stringify(logs, null, 2));
  console.log('Error:', err, 'Logs size:', logs.length); 
});

console.log('done');

output-sample.json

[ 
  {
    "address": "0xa74476443119a942de498590fe1f2454d7d4ac0d",
    "blockNumber": 2607804,
    "transactionHash": "0xd006934e37e244389745495ae481fcf8bfcc08f77ecbb94fd885692024adc4b5",
    "transactionIndex": 42,
    "blockHash": "0x77edd08a2af034dde99b4a022ea27828d1059aba442097718b5af24bc67513b0",
    "logIndex": 37,
    "removed": false,
    "event": "Transfer",
    "args": {
      "_from": "0x0000000000000000000000000000000000000000",
      "_to": "0xbf5c29bb50dcb96dde76b14a6c4b545a24956e01",
      "_value": "3e+23"
    }
  },
  {
    "address": "0xa74476443119a942de498590fe1f2454d7d4ac0d",
    "blockNumber": 2607804,
    "transactionHash": "0x845966e24a7631581c54cadbb7ac4fdeaea3d7ff7edbfd879e5a0324afe6541b",
    "transactionIndex": 43,
    "blockHash": "0x77edd08a2af034dde99b4a022ea27828d1059aba442097718b5af24bc67513b0",
    "logIndex": 38,
    "removed": false,
    "event": "Transfer",
    "args": {
      "_from": "0x0000000000000000000000000000000000000000",
      "_to": "0x0357d3e0a6268db4f42b05d47892c87cc9fab9b6",
      "_value": "1.2e+23"
    }
  }
]