Patrick Bismuth (born 15 December 1954) is a French classical violinist and conductor. Biography Bismuth studied the violin with Roland Charmy at the Conservatoire de Paris. From 1993 to 1998, Bis
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a8063b85199edebe1dfe679943e614b7bea323aaf6f69af810f901d639aa8d. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb452e53-a4c5-4d1e-876f-fc2d51ba5830.json and https://artists.proofprofile.net/proofs/artist/bb452e53-a4c5-4d1e-876f-fc2d51ba5830.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Enesco, Ravel, Kreisler & Emmanuel: En miroir