mxbit/scripts/gen.js

Bitcoin cash bike-shed

'use strict';

const consensus = require('../lib/protocol/consensus');
const TX = require('../lib/primitives/tx');
const Block = require('../lib/primitives/block');
const Script = require('../lib/script/script');
const util = require('../lib/utils/util');

function createGenesisBlock(options) {
  let reward = options.reward;

  let flags = Buffer.from(
      '11/Feb/2019 Bitcoin Eyes $3.8K After High-Volume Price Breakout',
      'ascii');


  let key = Buffer.from(''
      + '045eb3a9e4920eba4373e3a4d442f1946a5b10b12fdf4191'
      + '4e434cdcdfde0cf11210fc1f0c17048154fe943fa44b9b0f'
      + '70eea6ce2b0e5a52847d7681c7248cc3fb', 'hex');


  if (!reward)
    reward = 50 * consensus.COIN;

  const tx = new TX({
    version: 1,
    inputs: [{
      prevout: {
        hash: consensus.ZERO_HASH,
        index: 0xffffffff
      },
      script: new Script()
        .pushInt(504365040)
        .pushPush(Buffer.from([4]))
        .pushData(flags)
        .compile(),
      sequence: 0xffffffff
    }],
    outputs: [{
      value: reward,
      script: Script.fromPubkey(key)
    }],
    locktime: 0
  });

  const block = new Block({
    version: options.version,
    prevBlock: consensus.ZERO_HASH,
    merkleRoot: tx.hash(),
    time: options.time,
    bits: options.bits,
    nonce: options.nonce,
    height: 0
  });

  block.txs.push(tx);

  return block;
}

const main = createGenesisBlock({
  version: 1,
  time: 1549908188,
  bits: 504365040,
  nonce: 1178027
});

const testnet = createGenesisBlock({
  version: 1,
  time: 1296688602,
  bits: 504365040,
  nonce: 1236328
});

const regtest = createGenesisBlock({
  version: 1,
  time: 1296688602,
  bits: 545259519,
  nonce: 2
});


console.log(main);
console.log('');
console.log(testnet);
console.log('');
console.log(regtest);
console.log('');
console.log('main hash: %s', main.rhash());
console.log('main raw: %s', main.toRaw().toString('hex'));
console.log('');
console.log('testnet hash: %s', testnet.rhash());
console.log('testnet raw: %s', testnet.toRaw().toString('hex'));
console.log('');
console.log('regtest hash: %s', regtest.rhash());
console.log('regtest raw: %s', regtest.toRaw().toString('hex'));
console.log(util.revHex(Buffer.from('6d6a8fe783643e3b4278201b95517cb72858dbd96d85c23b65d70c16e69a10d5', 'hex')));
console.log(util.revHex(Buffer.from(main.rhash(), 'hex')));
console.log(util.revHex(Buffer.from(testnet.rhash(), 'hex')));
console.log(util.revHex(Buffer.from(regtest.rhash(), 'hex')));