Simulate BTC balance

simulate_btc_balance.js

#!/usr/bin/env node

var blockexplorer = require('blockchain.info/blockexplorer')

// randomly chosen
var addresses = [
    '1CEDQ9Vfq8pYVi3Anp926Zjac9Xiz394Y1',
    '1CGXTwzjTHbUJXLAvWB4r7L2QLctEpWjti',
    '1DUb2YYbQA1jjaNYzVXLZ7ZioEhLXtbUru',
    '1Hz96kJKF2HLPGY15JWLB5m9qGNxvt8tHJ',
    '3K34VEacgVG2tHJ7pb24jACJuLtpB3TDs2',
];

var promises = addresses.map(blockexplorer.getAddress);

Promise.all(promises).then(
    data => console.log(data.reduce((a, e) => a += e.final_balance / 1e8, 0))
);