Bernard René Giraudeau (18 June 1947 – 17 July 2010) was a French sailor, actor, film director, scriptwriter, producer and writer. Early life He was born on 18 June 1947 in La Rochelle, Charente-Mari
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 0x6ccc72fc3ff25e553395319e7eee62ac32c849d8d067fbe8166e5a063fdc8e8f. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b36ef50e-e4fa-4a7e-b0b1-73fb2508149b.json and https://artists.proofprofile.net/proofs/artist/b36ef50e-e4fa-4a7e-b0b1-73fb2508149b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.