what's Surmount Systems?

Surmount Systems is a 501(c)(3) non-profit foundation dedicated to pioneering advancements in quantum security for Bitcoin. Their mission is to safeguard the Bitcoin timechain against quantum computing threats by developing protocol-level solutions that enable seamless migration to quantum-resistant cryptography. A flagship project is BIP 360, which introduces Pay-to-Quantum-Resistant-Hash (P2QRH) address types as part of the proposed QuBit soft fork. This leverages post-quantum signature schemes like SQISign, allowing users to spend from vulnerable ECDSA addresses into secure ones without disrupting the network. They maintain open-source tools and forks for cryptographic implementations and Bitcoin Improvement Proposals to advance these upgrades.[[2]](https://surmount.systems/)[[3]](https://github.com/SurmountSystems)

Surmount Systems supports OPNEXT2026 conference on April 16 in New York.