Hash-based signatures for Bitcoin's post-quantum future? with Jonas Nick | SLP713 Bitcoin researcher @Blockstream and bitcoin/secp256k1 contributor, @n1ckler joins me to discuss how quantum computing could impact Bitcoin’s security. We explore post-quantum cryptography, hash-based signatures, impact on hardware wallets, the controversial block size trade-offs and more. (00:00) - Intro (01:49) - How real is quantum risk to Bitcoin? (04:39) - When could quantum pose a threat to Bitcoin’s cryptography? (09:56) - Long range vs Short range attacks (12:37) - How many coins are vulnerable to Long range attacks? (14:12) - Different types of cryptography and exploring Hash-based signature schemes (17:00) - Categories of Hash-based signature scheme and their pros & cons (23:42) - How do Hash-based signatures work? (32:14) - Would Lightning, Multi-sig, Taproot, Silent Payments, Atomic swaps work in a post-quantum world? (38:50) - What are Adaptor signatures & how do they affect atomic swapping? (41:27) - Will we need new Bitcoin hardware wallets?; Signature production & verification (44:41) - Signature size and Bitcoin block capacity implications (46:52) - Should we revisit the block size conversation? (54:57) - Overview of SPHINCS+ & SHRINCS (59:49) - Transitioning to post-quantum signature schemes; Overview of BIP 360 (1:09:06) - Closing thoughts