原始文献 / 论坛帖 / Re: Major Meltdown
Re: Major Meltdown
Bitcointalk · 2010-06-27 19:06:09 UTC
这是个类似问题的回答，关于大崩溃后怎么恢复。
https://www.bitcoin.org/smf/index.php?topic=191.msg1585#msg1585
引用自：satoshi，2010 年 6 月 14 日 08:39:50 PM（https://bitcointalk.org/index.php?topic=191.msg1585#msg1585）
如果 SHA-256 被彻底攻破，我觉得我们可以先对"出事前哪条是诚实链"达成共识，把它锁定，再换个新哈希函数继续。
如果哈希是慢慢被攻破的，我们可以有序过渡到新哈希。软件会设定从某个块号开始用新哈希，大家到时候升级就行。软件可以把所有旧块的新哈希存下来，确保没人能拿一个旧哈希相同、内容不同的块来捣乱。
英文原文
Here's an answer to a similar question about how to recover from a major meltdown.
https://www.bitcoin.org/smf/index.php?topic=191.msg1585#msg1585
Quote from: satoshi on June 14, 2010, 08:39:50 PM（https://bitcointalk.org/index.php?topic=191.msg1585#msg1585）If SHA-256 became completely broken, I think we could come to some agreement about what the honest block chain was before the trouble started, lock that in and continue from there with a new hash function.
If the hash breakdown came gradually, we could transition to a new hash in an orderly way. The software would be programmed to start using a new hash after a certain block number. Everyone would have to upgrade by that time. The software could save the new hash of all the old blocks to make sure a different block with the same old hash can't be used.