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

Coinbase, which holds about 5% of all bitcoin, told developers that Bitcoin's quantum-resistant upgrade must work for large custodians. The exchange called the post 'an input to an open discussion' and flagged signing risks that weigh on big custodians. The upgrade aims to protect against future quantum threats, but adoption requires addressing custodian concerns.