Quantum BIPs Showdown
summary
Panel compares pay-to-Merkle root (BIP360) vs P2TRv2 with concrete tradeoffs: P2TRv2 yields ~64‑byte EC keypath spends vs ~96‑byte P2MR witnesses, but P2MR avoids exposing EC keys on chain. Hash‑based scheme Shrinks is proposed as an immediate, well‑understood fallback; it is stateful, costs key generation for many signatures, and needs mempool/blockchain checks or secure counters to avoid reuse. Recovery/lifeboat protocols and multi‑tree XMSS are discussed as practical mitigations to preserve funds and avoid chain splits.
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chapters (8)
- 0:00Welcome
- 1:53Pay-to-Merkle-root vs taproot V2
- 8:36Hash-based signatures
- 18:00Lightning and off-chain impact
- 24:19Isogeny and lattice signatures
- 30:20SIKE isogeny break
- 40:33Recovery protocols in quantum mitigation
- 45:48Q&A
