Hash-Based Signatures with Olaoluwa Osuntokun (Lightning Labs) | Quantum Bitcoin Summit

Show Notes

As quantum computing advances, Bitcoin's current digital signatures (ECDSA/Schnorr) face real vulnerabilities. In this technical session, Olaoluwa "Lalu" Osuntokun (Lightning Labs) offers a deep dive into hash-based signature schemes, especially SPHINCS+, as a resilient post-quantum alternative. Covering: Why hash-based signatures (vs lattice/code-based)? How SPHINCS+ works: WOTS+, FORS, XMSS, and hypertrees Stateless security and the end of public key derivation Parameter tuning for Bitcoin use cases Implementation trade-offs and wallet implications Signature size optimizations and potential BIPs Multisig and MPC limitations Thoughts on STARK-based aggregation and future integrations At Presidio Bitcoin's Quantum Bitcoin Summit, Olaoluwa Osuntokun (Lightning Labs) offers a deep dive into hash-based signature schemes, especially SPHINCS+, as a resilient post-quantum alternative for Bitcoin's current, quantum-vulnerable digital signatures (ECDSA/Schnorr). Covering: Why hash-based signatures (vs lattice/code-based)? How SPHINCS+ works: WOTS+, FORS, XMSS, and hypertrees Stateless security and the end of public key derivation Parameter tuning for Bitcoin use cases Implementation trade-offs, Tapscript changes, and wallet implications Signature size optimizations and potential BIPs Multisig and MPC limitations Thoughts on Stark-based aggregation and future integrations Presented at the Quantum Bitcoin Summit hosted by 📍Presidio Bitcoin A big thanks to our sponsors: Project Eleven and Anduro! 🔴 Watch the full Day 1 livestream: https://www.youtube.com/watch?v=GeUdu4hrBPI&t=4021s 🌐 Learn more about the summit: https://pbquantum.com 🐦 Follow us: https://x.com/PresidioBitcoin Learn more: https://presidiobitcoin.com