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coinbase somewhat working

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Ben Wilson
2023-06-17 16:34:45 -04:00
parent 00cb33c43d
commit 2b9a4f3d85
4 changed files with 199 additions and 43 deletions
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src/models/MiningJob.ts
+31 -21
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@@ -1,3 +1,4 @@
import * as bitcoinjs from 'bitcoinjs-lib';
import * as crypto from 'crypto';
import { MerkleTree } from 'merkletreejs';
@@ -32,7 +33,7 @@ export class MiningJob {
public tree: MerkleTree;
constructor(id: string, blockTemplate: IBlockTemplate, _cleanJobs: boolean) {
constructor(id: string, public blockTemplate: IBlockTemplate, _cleanJobs: boolean) {
//console.log(blockTemplate);
@@ -53,7 +54,7 @@ export class MiningJob {
//console.log('TRANSACTION FEES', transactionFees);
//console.log('MINING REWARD', miningReward);
const { coinbasePart1, coinbasePart2 } = this.createCoinbaseTransaction([{ address: '', percentage: 100 }], blockTemplate.height, transactionFees + miningReward);
const { coinbasePart1, coinbasePart2 } = this.createCoinbaseTransaction([{ address: 'bc1qsa5kr5s74wss7pcpmnrc7e3y5nrgyfcdzpwakk', percentage: 100 }], blockTemplate.height, transactionFees + miningReward);
this.coinb1 = coinbasePart1;
this.coinb2 = coinbasePart2;
@@ -100,39 +101,48 @@ export class MiningJob {
private createCoinbaseTransaction(addresses: AddressObject[], blockHeight: number, reward: number): { coinbasePart1: string, coinbasePart2: string } {
// Generate coinbase script
const coinbaseScript = `03${blockHeight.toString(16).padStart(8, '0')}54696d652026204865616c74682021`;
const blockHeightScript = `03${blockHeight.toString(16).padStart(8, '0')}`;
const inputScript = `54696d652026204865616c74682021`;
// Create coinbase transaction
const endOfInput = 'ffffffff';
const lockTime = '00000000';
const version = '01000000';
const inputCount = '01';
const inputs = '0000000000000000000000000000000000000000000000000000000000000000ffffffff';
const coinbaseScriptSize = coinbaseScript.length / 2;
const coinbaseScriptBytes = coinbaseScriptSize.toString(16).padStart(2, '0');
const coinbaseTransaction = inputCount + inputs + coinbaseScriptBytes + coinbaseScript + '00000000';
const fakeCoinbaseInput = '0000000000000000000000000000000000000000000000000000000000000000';
// Create outputs
const outputCount = addresses.length;
const outputCountHex = outputCount.toString(16).padStart(2, '0');
const inputScriptBytes = ((blockHeightScript.length + inputScript.length + lockTime.length) / 2).toString(16).padStart(2, '0');
const inputTransaction = inputCount + fakeCoinbaseInput + endOfInput + inputScriptBytes + blockHeightScript + inputScript + lockTime;
//let remainingPayout = reward;
let remainingPayout = reward;
const outputs = addresses
.map((addressObj) => {
const percentage = addressObj.percentage / 100;
const satoshis = Math.floor(reward * percentage).toString(16).padStart(16, '0');
remainingPayout -= parseInt(satoshis, 16);
const script = '1976a914' + Buffer.from(addressObj.address, 'hex').toString('hex') + '88ac'; // Convert address to hex
return satoshis + script;
const satoshis = Math.floor(reward * percentage);
const satoshiBuff = Buffer.alloc(4);
satoshiBuff.writeUInt32LE(satoshis);
const littleEndianSatoshis = satoshiBuff.toString('hex').padEnd(16, '0');
const script = bitcoinjs.payments.p2wpkh({ address: addressObj.address }).output.toString('hex') // Convert address to hex
const scriptBytes = (script.length / 2).toString(16).padStart(2, '0');
return littleEndianSatoshis + scriptBytes + script;
})
.join('');
// Distribute any remaining satoshis to the first address
const firstAddressSatoshis = (parseInt(outputs.substring(0, 16), 16) + remainingPayout).toString(16).padStart(16, '0');
const firstAddressOutput = firstAddressSatoshis + outputs.substring(16);
const modifiedOutputs = firstAddressOutput + outputs.slice(16);
// // Distribute any remaining satoshis to the first address
// const firstAddressSatoshis = (parseInt(outputs.substring(0, 16), 16) + remainingPayout).toString(16).padStart(16, '0');
// Combine coinbasePart1 and coinbasePart2
const coinbasePart1 = version + coinbaseTransaction + outputCountHex;
const coinbasePart2 = modifiedOutputs + '00000000';
// Create outputs
const outputCountHex = addresses.length.toString(16).padStart(2, '0');
const coinbasePart1 = version + inputTransaction + endOfInput + outputCountHex;
const coinbasePart2 = outputs + lockTime;
return { coinbasePart1, coinbasePart2 };
}