[Blockstream: Falcon-1024 Preferred for Bitcoin if a Post-Quantum Signature Scheme is Chosen] Foresight News reports that Bitcoin infrastructure development company Blockstream has released a report evaluating the applicability of three post-quantum signature schemes—Dilithium, Falcon, and Hawk—for Bitcoin. The report notes that Hawk has been withdrawn due to related attacks; Dilithium is the easiest to implement and supports key derivation paths, but its signature and public key sizes are too large, making it unsuitable for Bitcoin; Falcon is the most optimal overall in terms of compactness, verification speed, and established assumptions, with feasible mitigation solutions for floating-point signature issues. The report concludes that if a post-quantum signature scheme must be chosen for Bitcoin, Falcon-1024 would be the preferred choice.