Stream Block: Bitcoin Could Add New Signatures to Counter Quantum Threats Stream Block said Bitcoin could add new signature schemes to counter future quantum computing threats, with its research team evaluating lattice-based alternatives. After comparing Ditium, Falcon, and Hook, the group identified Falcon 1024 as its preferred Litchi-based candidate, citing its balance of compactness, verification speed, and mature security assumptions. Deployment hurdles remain, including unfinished standardization, hardware wallet memory requirements and lack of a public-key working plan. The researchers emphasized that hash-based signatures remain the more conservative long-term option for Bitcoin, with a hybrid deployment a potential future approach. link