MySQL币是一种基于区块链技术的加密数字货币。它采用了与比特币相似的工作量证明（PoW）共识算法，用于验证交易并保护网络安全。
// 示例代码（创建MySQL币交易）import hashlibimport jsonimport timefrom flask import Flask, jsonify, requestimport requestsclass Blockchain:def __init__(self):self.chain = []self.transactions = []self.create_block(proof=1, previous_hash='0')def create_block(self, proof, previous_hash):block = {'index': len(self.chain) + 1,'timestamp': str(time.time()),'proof': proof,'previous_hash': previous_hash,'transactions': self.transactions}self.transactions = []self.chain.append(block)return blockdef add_transaction(self, sender, receiver, amount):self.transactions.append({'sender': sender,'receiver': receiver,'amount': amount})@staticmethoddef hash(block):encoded_block = json.dumps(block, sort_keys=True).encode()return hashlib.sha256(encoded_block).hexdigest()def get_previous_block(self):return self.chain[-1]def proof_of_work(self, previous_proof):new_proof = 1check_proof = Falsewhile not check_proof:hash_operation = hashlib.sha256(str(new_proof**2 - previous_proof**2).encode()).hexdigest()if hash_operation[:4] == '0000':check_proof = Trueelse:new_proof += 1return new_proofdef is_chain_valid(self, chain):previous_block = chain[0]block_index = 1while block_index< len(chain):block = chain[block_index]if block['previous_hash'] != self.hash(previous_block):return Falseprevious_proof = previous_block['proof']proof = block['proof']hash_operation = hashlib.sha256(str(proof**2 - previous_proof**2).encode()).hexdigest()if hash_operation[:4] != '0000':return Falseprevious_block = blockblock_index += 1return True# 创建一个Web应用程序，使用Flaskapp = Flask(__name__)# 创建一个区块链实例blockchain = Blockchain()# 创世交易(coinbase transaction)blockchain.add_transaction(sender="0", receiver="address1", amount=100)# 创建一个接口，用于添加新的交易@app.route('/add_transaction', methods=['POST'])def add_transaction():json = request.get_json()sender = json['sender']receiver = json['receiver']amount = json['amount']blockchain.add_transaction(sender, receiver, amount)response = {'message': f'MysqlCoin transaction added to block {len(blockchain.chain) + 1}'}return jsonify(response), 201# 创建一个接口，用于挖掘新的区块@app.route('/mine_block', methods=['GET'])def mine_block():previous_block = blockchain.get_previous_block()previous_proof = previous_block['proof']proof = blockchain.proof_of_work(previous_proof)previous_hash = blockchain.hash(previous_block)blockchain.add_transaction(sender="0", receiver="address2", amount=1)block = blockchain.create_block(proof, previous_hash)response = {'message': 'New MysqlCoin block added to blockchain.','index': block['index'],'timestamp': block['timestamp'],'proof': block['proof'],'previous_hash': block['previous_hash'],'transactions': block['transactions']}return jsonify(response), 200# 创建一个接口，用于查看完整的区块链@app.route('/get_chain', methods=['GET'])def get_chain():response = {'chain': blockchain.chain,'length': len(blockchain.chain)}return jsonify(response), 200# 运行Web应用程序app.run(host='0.0.0.0', port=5000)
以上示例代码展示了如何创建MysqlCoin的交易、挖掘新的区块以及查看完整的区块链。区块链技术为MysqlCoin提供了去中心化的解决方案，使其成为一个安全、透明的数字货币。
