Bitcoin’s Quantum-Resistant Upgrade Has to Work for Big Custodians, Coinbase Tells Developers

Coinbase set out what it wants from Bitcoin ‘s shift to signatures that can resist a future quantum computer, and much of its list traces back to how a large custodian actually signs transactions. Holding roughly 5% of all BTC in existence by its own count, the exchange described the post as “an input to an open discussion, not a set of instructions or a final Coinbase position.” Coinbase argued the work should start before anyone proves the threat is real.

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