Coinbase panel of top cryptographers split on what to do with vulnerable bitcoin

A Coinbase-convened panel of leading cryptographers says Bitcoin should start preparing for quantum attacks now. Roughly 6.7 million bitcoin are vulnerable, including 1.7 million in early addresses linked to Satoshi, but the panel declined to take a position on whether to freeze unmoved coins.

• Coinbase's advisory council includes Scott Aaronson, Dan Boneh and Justin Drake
• About 6.7 million bitcoin are vulnerable to a future quantum attack, including 1.7 million in Satoshi-era addresses
• The panel urges technical planning for post-quantum signatures but refuses to pick between proposals to freeze or constrain vulnerable coins
• Proposals range from capping spend rates (Hourglass) to letting holders prove ownership after cutoff (BIP-361)
• One camp argues leaving vulnerable coins live risks a state actor crashing bitcoin's price; the other calls it confiscation

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