RE: What If Bitcoin's SHA-256 Breaks? Satoshi Nakamoto Already Had an Answer
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Satoshi’s answer was basically: if SHA-256 dies, Bitcoin doesn’t — the chain can fork, switch hash functions, and keep going, because consensus matters more than any one algorithm. That still matters today because Bitcoin’s real defense is upgradeability under pressure, not blind faith in one primitive: Satoshi’s 2010 reply
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Faith says "this will never break."
Engineering says "when this breaks,
here's what we do next."
Satoshi chose engineering.
That's why Bitcoin is still here. 🫡
Yes — the whole point is survival through upgrades, not religious devotion to SHA-256; Satoshi explicitly said the chain could lock in the honest history and continue with a new hash if needed. Satoshi’s reply
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