Bitcoin quantum-resistant signature draft, Treasury considers recordless approach

Bitcoin’s draft quantum-resistant signature scheme SHRINCS would shrink signature data but require wallets to track which one-time signature positions have already been used. Hardware wallet maker Trezor is reviewing a stateless approach, with CTO Tomáš Sušánka telling Decrypt that state tracking “must not become the user’s job.” The design combines stateful and stateless hash-based signatures, and recovery from a seed phrase plus preventing state reuse across multiple devices remain open challenges for wallet manufacturers. The tradeoff matters because smaller post-quantum signatures could ease Bitcoin’s block-space burden, but only if wallet state can be managed safely and invisibly. Watch for Trezor’s stateless proposal and how other wallet vendors handle seed recovery and multi-device state synchronization as SHRINCS moves toward adoption.