28 lines
1.0 KiB
Python
28 lines
1.0 KiB
Python
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class Blockchain:
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def __init__(self, genesis_recipient=None, genesis_amount=0):
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self.utxo = {} # 格式: {tx_id: (receiver, amount)}
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# 生成创世交易（仅第一次初始化时调用）
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if genesis_recipient is not None and genesis_amount > 0:
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self.add_genesis(genesis_recipient, genesis_amount)
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def add_genesis(self, receiver, amount):
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# 添加创世区块
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genesis_tx_id = "genesis_tx_0x1"
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self.utxo[genesis_tx_id] = (receiver, amount)
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def validate_transaction(self, tx):
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# 验签
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if not tx.is_valid():
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return False
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# 验证发送方余额
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sender_balance = sum(amt for (addr, amt) in self.utxo.values() if addr == tx.sender)
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return sender_balance >= tx.amount
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def add_transaction(self, tx):
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if self.validate_transaction(tx):
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tx_id = hash(tx) # 简化交易ID生成
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self.utxo[tx_id] = (tx.receiver, tx.amount)
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return True
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return False |