Bitcoin exchanges can reduce quantum exposure before a network upgrade
A future quantum-safe Bitcoin will have to pass through the systems that hold and move today's coins. Exchanges, institutional custodians, hardware wallets and key-management platforms would all need to adopt new rules while continuing to process deposits, withdrawals, approvals, backups and recoveries.
That operational challenge moved to the center of the debate after Coinbase published a September 9 account of a post-quantum Bitcoin workshop it hosted with Stanford and Localhost Research. Coinbase said the closed-door session brought together developers, cryptographers, institutional custodians and hardware-wallet experts. Participants reached no consensus on an exact post-quantum approach and identified open tradeoffs involving transaction size, hardware performance, key management and adoption.
An earlier Glassnode exposure study gives that rollout problem a measurable scale. Its May data placed roughly 1.6 million BTC in exchange-related outputs whose public keys were already visible on-chain.
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