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Card V-20: SATOSHI NAKAMOTO – 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.

Series V · Card 20 of 21 · THE MINE

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.

SATOSHI NAKAMOTO · BITCOINTALK · 14.06.2010

Turn it over, answer, sign – free, no account.

Source

BitcoinTalk, “Re: Dealing with SHA-256 Collisions”, 14 June 2010

Open source · satoshi.nakamotoinstitute.org ↗

About the author

Pseudonymous creator of Bitcoin. Published the whitepaper “Bitcoin: A Peer-to-Peer Electronic Cash System” in 2008 and launched the network in 2009. Their identity remains unknown.

About the source

Bitcointalk: the forum Satoshi opened in November 2009 to talk about Bitcoin.

The question on the back

When something fundamental breaks, how fast do you find a fresh start?