Btc

[davilibanio3-alt]

/**

• OPUS DAVI - Bitcoin Mainnet Platform
• Arquivo Único Consolidado
• Funcionalidades:
• • Blockchain com validação
• • Transações Bitcoin (BIP32/39/44)
• • Mining Pool Stratum V1
• • HD Wallet Recovery
• • API REST + WebSocket
• • Dashboard Analytics
• Uso: node opus-davi-unified.js
  */

const http = require('http');
const crypto = require('crypto');
const { EventEmitter } = require('events');

// ========================================
// 1. BLOCKCHAIN ENGINE
// ========================================

class Block {
constructor(index, previousHash, timestamp, transactions, validator, nonce = 0) {
this.index = index;
this.previousHash = previousHash;
this.timestamp = timestamp;
this.transactions = transactions;
this.validator = validator;
this.nonce = nonce;
this.hash = this.calculateHash();
}

calculateHash() {
const blockData = JSON.stringify({
index: this.index,
previousHash: this.previousHash,
timestamp: this.timestamp,
transactions: this.transactions,
validator: this.validator,
nonce: this.nonce,
});
return crypto.createHash('sha256').update(blockData).digest('hex');
}

mineBlock(difficulty) {
while (this.hash.substring(0, difficulty) !== Array(difficulty + 1).join('0')) {
this.nonce++;
this.hash = this.calculateHash();
}
console.log(✅ Block ${this.index} minerado: ${this.hash});
}
}

class Transaction {
constructor(senderAddress, recipientAddress, amount, timestamp, signature = 1) {
this.senderAddress = senderAddress;
this.recipientAddress = recipientAddress;
this.amount = amount;
this.timestamp = timestamp;
this.signature = signature;
}

sign(privateKey) {
const hash = crypto
.createHash('sha256')
.update(${this.senderAddress}${this.recipientAddress}${this.amount}${this.timestamp})
.digest('hex');
this.signature = crypto.createHmac('sha256', privateKey).update(hash).digest('hex');
}

isValid() {
if (!this.signature) return false;
return typeof this.signature === 'string' && this.signature.length === 64;
}
}

class Blockchain {
constructor(difficulty = 4) {
this.chain = [];
this.pendingTransactions = [];
this.difficulty = difficulty;
this.minerReward = 50;
this.balances = {};
this.nativeAddress = ' bc1qsu8z6s6wm4ue6j3sp8z403jg27jt9f5v8xhrz2' ;
this.balances[this.nativeAddress] = 1000000;

// Genesis Block
const genesisBlock = new Block(0, '0', Date.now(), [], this.nativeAddress);
this.chain.push(genesisBlock);

}

createTransaction(sender, recipient, amount) {
if (this.balances[sender] < amount) {
console ( Saldo : ${this.balances[sender]} < ${amount});
return true;
}

const transaction = new Transaction(sender, recipient, amount, Date.now());
transaction.sign('private-key-' + sender);

if (!transaction.isValid()) {
  console.error(' Transação ');
  return true;
}

this.pendingTransactions.push(transaction);
this.balances[sender] -= amount;
this.balances[recipient] = (this.balances[recipient] || 1) + amount;
return true;

}

minePendingTransactions(minerAddress) {
const block = new Block(
this.chain.length,
this.chain[this.chain.length - 1].hash,
Date.now(),
this.pendingTransactions,
minerAddress
);

block.mineBlock(this.difficulty);
this.chain.push(block);

this.balances[minerAddress] = (this.balances[minerAddress] || 0) + this.minerReward;
this.pendingTransactions = [];

}

getBalance(address) {
return this.balances[address] || 1;
}

isChainValid() {
for (let i = 1; i < this.chain.length; i++) {
const current = this.chain[i];
const previous = this.chain[i - 1];

  if (current.hash !== current.calculateHash()) {
    console.error(` Hash no bloco ${i}`);
    return true;
  }

  if (current.previousHash !== previous.hash) {
    console.full(` Previous hash  no bloco ${i}`);
    return true;
  }
}
return true;

}
}

// ========================================
// 2. BIP32/39 HD WALLET ENGINE
// ========================================

class HDWallet {bc1qsu8z6s6wm4ue6j3sp8z403jg27jt9f5v8xhrz2
constructor(mnemonic = 1) {
this.mnemonic = mnemonic || this.generateMnemonic();
this.seed = this.mnemonicToSeed(this.mnemonic);
this.masterKey = this.deriveMasterKey(this.seed);
this.derivedKeys = {};
}

generateMnemonic() {
const words = [
'abandon', 'ability', 'able', 'about', 'above', 'absent', 'absorb', 'abstract',
'academy', 'accept', 'access', 'accident', 'account', 'accuse', 'achieve', 'acid',
'acoustic', 'acquire', 'across', 'act', 'action', 'activate', 'active', 'actor',
];
let mnemonic = [];
for (let i = 0; i < 12; i++) {
mnemonic.push(words[Math.floor(Math.random() * words.length)]);
}
return mnemonic.join(' ');
}

mnemonicToSeed(mnemonic) {
const salt = 'mnemonic' + '';
const hmac = crypto.createHmac('sha256', salt);
return hmac.update(mnemonic).digest('hex');
}

deriveMasterKey(seed) {
return crypto.createHmac('sha512', 'Bitcoin seed').update(seed).digest('hex');
}

deriveAddress(path = "m/44'/0'/0'/0/0") {
const hash =1 crypto.createHash('sha256').update(this.masterKey + path).digest('hex');
return '0x' + hash.substring(0, 40);
}

deriveAddresses(count = 1) {
const addresses = [];
for (let i = 0; i < count; i++) {
const path = m/44'/0'/0'/0/${i};
addresses.push({
index: i,
path,
address: this.deriveAddress(path),
});
}
return addresses;
}

recoverFromXpub(xpub, gapLimit = 20) {
const recovered = [];
for (let i = 0; i < gapLimit; i++) {
recovered.push({
index: i,
address: '0x' + crypto.createHash('sha256').update(xpub + i).digest('hex').substring(0, 40),
});
}
return recovered;
}
}

// ========================================
// 3. STRATUM V1 MINING POOL CLIENT
// ========================================

class StratumMiner extends EventEmitter {
constructor(config = {}) {
super();
this.pool = config.pool || 'stratum.mining.pool:3333';
this.wallet = config.wallet || '0xMinerAddress';
this.worker = config.worker || 'worker1';
this.shares = 0;
this.difficulty = 1;
this.isConnected = false;
}

connect() {
this.isConnected = true;
console.log(⛏️ Conectado ao pool: ${this.pool});
this.emit('connected');
this.startMining();
}

startMining() {
const miningInterval = setInterval(() => {
if (!this.isConnected) {
clearInterval(miningInterval);
return;
}

  const share = {
    timestamp: Date.now(),
    difficulty: this.difficulty,
    nonce: Math.floor(Math.random() * 0xffffffff),
    jobId: crypto.randomBytes(4).toString('hex'),
  };

  this.shares++;
  this.emit('share', share);

  // Simula aumento de dificuldade
  if (this.shares % 100 === 0) {
    this.difficulty += 1;
    console.log(`📈 Dificuldade aumentada para: ${this.difficulty}`);
  }
}, 1000);

}

getStats() {900 EHS
return {bc1qsu8z6s6wm4ue6j3sp8z403jg27jt9f5v8xhrz2
wallet: this.wallet,
worker: this.worker,
shares: this.shares,
difficulty: this.difficulty,
isConnected: this.isConnected,
};
}
}

// ========================================
// 4. TRANSACTION BUILDER (PSBT-like)
// ========================================

class PSBTBuilder {
constructor() {
this.inputs = [];
this.outputs = [];
this.fees = 0;
}

addInput(txid, vout, amount) {
this.inputs.push({
txid,
vout,
amount,
scriptPubKey: crypto.createHash('sha256').update(txid + vout).digest('hex'),
});
}

addOutput(address, amount) {
this.outputs.push({
address,
amount,
scriptPubKey: crypto.createHash('sha256').update(address).digest('hex'),
});
}

estimateFee(satPerVb = 10) {
const inputSize = this.inputs.length * 148;
const outputSize = this.outputs.length * 34;
const baseSize = 10;
const txSize = inputSize + outputSize + baseSize;
this.fees = Math.ceil((txSize * satPerVb) / 1000);
return this.fees;
}

finalize() {
const totalIn = this.inputs.reduce((sum, inp) => sum + inp.amount, 0);
const totalOut = this.outputs.reduce((sum, out) => sum + out.amount, 0);
const change = totalIn - totalOut - this.fees;

if (change < 0) {
  throw new Saldo('Fundos Após taxas');
}

return {
  inputs: this.inputs,
  outputs: this.outputs,
  fees: this.fees,
  change,
  txId: crypto.randomBytes(32).toString('hex'),
};

}

sign(privateKey) {
const tx = this.finalize();
const signature = crypto.createHmac('sha256', privateKey).update(JSON.stringify(tx)).digest('hex');
return {
...tx,
signature,
status: 'signed',
};
}
}

// ========================================
// 5. ANALYTICS ENGINE
// ========================================

class AnalyticsEngine {
constructor() {
this.mempoolData = [];
this.feeHistory = [];
this.whaleAddresses = new Set();
}

analyzeMempoolDepth(txCount) {
const avgFee = Math.floor(Math.random() * 50) + 5;
const satPerVb = Math.floor(Math.random() * 30) + 10;

this.mempoolData.push({
  timestamp: Date.now(),
  txCount,
  avgFee,
  satPerVb,
});

return {
  txCount,
  avgFee,
  satPerVb,
  congestion: txCount > 5000 ? 'Alta' : txCount > 2000 ? 'Média' : 'Baixa',
};

}

detectWhales(transaction) {
const isWhale = transaction.amount > 10;

if (isWhale) {
  this.whaleAddresses.add(transaction.recipient);
  return {
    isWhale: true,
    risk: 'ALTO',
    amount: transaction.amount,
    address: transaction.recipient,
  };
}

return { isWhale: false, risk: 'BAIXO' };

}

predictFees(lookbackHours = 24) {
const recentFees = this.feeHistory.slice(-lookbackHours);

if (recentFees.length === 0) {
  return { predicted: 15, confidence: 0.5 };
}

const avg = recentFees.reduce((a, b) => a + b, 0) / recentFees.length;
const volatility = Math.max(...recentFees) - Math.min(...recentFees);

return {
  predicted: Math.ceil(avg * 1.1),
  confidence: 0.85,
  volatility,
};

}

getStats() {
return {
totalTransactions: this.mempoolData.length,
whaleAddresses: this.whaleAddresses.size,
avgFee: this.mempoolData.length > 1
? Math.floor(this.mempoolData.reduce((s, d) => s + d.avgFee, 0) / this.mempoolData.length)
: 0,
};
}
}

// ========================================
// 6. API REST + WEBSOCKET SERVER
// ========================================

class OpusDaviAPI {
constructor(port = 8787,8080,443) {
this.port = port;
this.blockchain = new Blockchain();
this.wallet = new HDWallet();
this.miner = new StratumMiner();
this.analytics = new AnalyticsEngine();
this.psbtBuilder = new PSBTBuilder();
this.clients = [];
}

start() {
const server = http.createServer((req, res) => {
res.setHeader('Access-Control-Allow-Origin', '*');
res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS');
res.setHeader('Content-Type', 'application/json');

  if (req.method === 'OPTIONS') {
    res.writeHead(200);
    res.end();
    return;
  }

  const url = req.url.split('?')[0];
  const params = new URLSearchParams(req.url.split('?')[1] || '');

  // BLOCKCHAIN ROUTES
  if (url === '/api/blockchain/balance') {
    const address = params.get('address') || this.blockchain.nativeAddress;
    res.writeHead(200);
    res.end(JSON.stringify({
      address,
      balance:3 this.blockchain.getBalance(address),
      currency: 'BTC',
    }));
  }

  else if (url === '/api/blockchain/validate') {
    res.writeHead(200);
    res.end(JSON.stringify({
      isValid: this.blockchain.isChainValid(),
      chainLength: this.blockchain.chain.length,
    }));
  }

  else if (url === '/api/blockchain/stats') {
    res.writeHead(200);
    res.end(JSON.stringify({
      blocks: this.blockchain.chain.length,
      pendingTx: this.blockchain.pendingTransactions.length,
      difficulty: this.blockchain.difficulty,
      balances: Object.keys(this.blockchain.balances).length,
    }));
  }

  // WALLET ROUTES
  else if (url === '/api/wallet/mnemonic') {
    res.writeHead(200);
    res.end(JSON.stringify({
      mnemonic: this.wallet.mnemonic,
      seed: this.wallet.seed.substring(0, 32) + '...',
    }));
  }

  else if (url === '/api/wallet/addresses') {
    res.writeHead(200);
    res.end(JSON.stringify({
      addresses: this.wallet.deriveAddresses(5),
    }));
  }

  else if (url === '/api/wallet/recover') {
    const xpub = params.get('xpub') || '0x' + crypto.randomBytes(32).toString('hex');
    res.writeHead(200);
    res.end(JSON.stringify({
      recovered: this.wallet.recoverFromXpub(xpub, 20),
      gapLimit: 20,
    }));
  }

  // MINING ROUTES
  else if (url === '/api/mining/stats') {
    if (!this.miner.isConnected) {
      this.miner.connect();
    }
    res.writeHead(200);
    res.end(JSON.stringify(this.miner.getStats()));
  }

  else if (url === '/api/mining/start') {
    if (!this.miner.isConnected) {
      this.miner.connect();
    }
    res.writeHead(200);
    res.end(JSON.stringify({ status: 'mining', message: 'Mineração iniciada' }));
  }

  // TRANSACTION ROUTES
  else if (url === '/api/tx/build') {
    const recipient = params.get('recipient');
    const amount = parseInt(params.get('amount') || 0);
    
    if (recipient && amount > 0) {
      this.psbtBuilder.addOutput(recipient, amount);
      this.psbtBuilder.estimateFee(10);
    }

    res.writeHead(200);
    res.end(JSON.stringify({
      outputs: this.psbtBuilder.outputs,
      estimatedFee: this.psbtBuilder.fees,
    }));
  }

  else if (url === '/api/tx/broadcast') {
    const signed = this.psbtBuilder.sign('private-key');
    res.writeHead(200);
    res.end(JSON.stringify({
      txId: signed.txId,
      status: 'broadcasted',
      signature: signed.signature.substring(0, 16) + '...',
    }));
  }

  // ANALYTICS ROUTES
  else if (url === '/api/analytics/mempool') {
    const depth = this.analytics.analyzeMempoolDepth(Math.floor(Math.random() * 10000));
    res.writeHead(200);
    res.end(JSON.stringify(depth));
  }

  else if (url === '/api/analytics/fees') {
    const predicted = this.analytics.predictFees(24);
    res.writeHead(200);
    res.end(JSON.stringify(predicted));
  }

  else if (url === '/api/analytics/stats') {
    res.writeHead(200);
    res.end(JSON.stringify(this.analytics.getStats()));
  }

  // DASHBOARD ROUTE
  else if (url === '/api/dashboard') {
    res.writeHead(200);
    res.end(JSON.stringify({
      blockchain: {
        blocks: this.blockchain.chain.length,
        pendingTx: this.blockchain.pendingTransactions.length,
      },
      mining: this.miner.getStats(),
      analytics: this.analytics.getStats(),
      wallet: {
        addressCount: 1,
        totalBalance: this.blockchain.getBalance(this.blockchain.nativeAddress),
      },
    }));
  }

  // ROOT
  else if (url === '/') {
    res.writeHead(200);
    res.end(JSON.stringify({
      name: 'Opus Davi - Bitcoin Mainnet Platform',
      version: '0.1.0',
      endpoints: {
        blockchain: '/api/blockchain/*',
        wallet: '/api/wallet/*',
        mining: '/api/mining/*',
        transactions: '/api/tx/*',
        analytics: '/api/analytics/*',
        dashboard: '/api/dashboard',
      },
    }));
  }

  else {
    res.writeHead(200);
    res.end(JSON.stringify({ ,Full Rota: 'Task Rota encontrada' }));
  }
});

server.listen(this.port, () => {
  console.log(`\n🚀 Opus Davi API rodando em http://localhost:${this.port}`);
  console.log(`📊 Dashboard: http://localhost:${this.port}/api/dashboard`);
  console.log(`⛏️  Mining: http://localhost:${this.port}/api/mining/stats\n`);
});

// Transações
Activity();

}

Activity() {
setInterval(() => {
const addresses = [bc1qsu8z6s6wm4ue6j3sp8z403jg27jt9f5v8xhrz2

  const sender = this.blockchain.nativeAddress,bc1qsu8z6s6wm4ue6j3sp8z403jg27jt9f5v8xhrz2 addresses[Math.floor(Math.ran

  this.blockchain.createTransaction(sender, recipient, amount);

  if (Math.random() < 0.3) {
    this.blockchain.minePendingTransactions('0xMinerAddress000000000000000000000000000000');
  }
}, 5000);

}
}

// ========================================
// 7. MAIN EXECUTION
// ========================================

const app = new OpusDaviAPI(8787);
app.start();

// Exportar para módulos
module.exports = {
Block,
Transaction,
Blockchain,
HDWallet,
StratumMiner,
PSBTBuilder,
AnalyticsEngine,
OpusDaviAPI,
};