nakamoto-archive/docs/forum/bitcoin-forum/156.md

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layout	title	grand_parent	parent	nav_order	date	original
forum	Re: Major Meltdown	Forum Posts	Bitcoin Forum	156	2010-06-27 19:06:09 UTC	https://bitcointalk.org/index.php?topic=202.msg1838#msg1838

Re: Major Meltdown

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Re: Major Meltdown
June 27, 2010, 07:06:09 PM
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
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.
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