3

当链条越长,你要篡改的区块数据也就越多,难度也就越大,所以我们一般说区块链能够保证已有数据不被篡改(除非你说服了全网里超过51%的矿工都更改某一笔账目,否则你的篡改都是无效的)。

The longer the chain, the more data you have to tamper with, and the harder it is, so we generally say that the blockchain can ensure that the existing data is not tampered with (unless you persuaded more than 51% of miners in the whole network to changed a certain account, otherwise your tampering is invalid).

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