Blockstream is exploring new cryptographic signatures to protect Bitcoin from quantum computers.
Blockstream's research team is considering adding new digital signature schemes to Bitcoin that are resistant to potential quantum computer attacks.
Experts compared three algorithms. Dilithium, Falcon and Hawk. Falcon-1024 was preferred due to its relatively compact signatures, high verification speed and developed cryptographic base.
However, implementation is hampered by several problems: incomplete standardization, memory requirements of hardware wallets and the lack of a suitable mechanism for obtaining public keys.
In the short term, researchers consider hash-based signatures to be a more conservative option for protecting Bitcoin. In the future, hybrid programs may be used.