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mynoontec
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很多人把区块链理解成“加密货币的数据库”,但关键不只是存数据,而是让一群互不信任的参与者共同维护同一份账本。交易先被广播,节点验证签名与余额,再由共识机制决定哪些交易写入区块;新区块通过哈希与前一区块相连,篡改历史记录会同时破坏后续链条并暴露异常。因此,区块链的核心价值是公开可验证、难以篡改和无需单一记账者。注意:不可篡改不等于内容一定正确,错误转账一旦确认通常也无法撤回,私钥和地址核对仍是用户自己的责任。
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