puzzle

gistfile1.txt

var bitcore = require('bitcore');
var request = require('request');

var utxo = {
    'txId' : '0c5d827a24b0822abbff73f1adbfd2be7efaf4e368b4baac7e280865eb13f497',
    'outputIndex' : 1,
    'script' : 'a91431f2ae5b333c56a4f01df6209382ec8f892e4f3687',
    'satoshis' : 1000000
};


//you can see it here: 
//https://live.blockcypher.com/btc/tx/0c5d827a24b0822abbff73f1adbfd2be7efaf4e368b4baac7e280865eb13f497

var address = 'YOUR_ADDRESS';
var tx = new bitcore.Transaction().from(utxo).to(address, 900000);
var redeemScript = bitcore.Script.fromASM('\
    OP_SHA256 \
    1bc273366856a5fb0bfd0611f57b7d4ae8e709dbe30fa207729f74716fd4e877\
    OP_EQUAL');
//this is your task! what is the total number of Bitcoins that will 
//ever be created, in hex format (don't forget the leading zero!)?
var solutionScript = '';
var scriptSig = bitcore.Script.fromASM(solutionScript + ' ' + redeemScript); 
tx.inputs[0].setScript(scriptSig);
var rawTx = tx.toString('hex');
var pushTx = {
    tx: rawTx
};

//for simplicity, we'll use the awesome BlockCypher API. 
//You could also submit this raw transaction using Bitcoin Core.
request({
    url: 'https://api.blockcypher.com/v1/btc/main/txs/push',
    method: 'POST',
    json: true,
    body: pushTx
}, function (err, response, body) {
    if (err) {
        return console.log('Error: ', err);
    }
    console.log(body);
});