Update
Coinbase Prepares for Quantum Computing with SHRINCS
Coinbase is preparing for Bitcoin's transition to quantum computing by proposing the SHRINCS scheme. This scheme addresses the issue of wallet recovery and signing under the draft SHRINCS scheme. The current specification of SHRINCS includes a 48-byte public key, stateful signatures between 548 and 4,619 bytes, and a stateless signature of 5,777 bytes. When correct state is unavailable, including after restoring from a static backup, the implementation must use only the stateless path, derived from SLH-DSA.