Coinbase Lays Out Post-Quantum Needs for Bitcoin Custody

Coinbase published a blog post outlining requirements for post-quantum cryptographic signatures in Bitcoin custody, emphasizing that any future design must account for transaction fees, full-node validation costs, and block space limits. The post is a technical and forward-looking discussion rather than a concrete proposal or protocol change. For traders, it signals that major custodians are preparing for long-term quantum threats, but it has no immediate impact on Bitcoin's price or network operations.