Gervaise may refer to: People Gervais (name), list of people with the given name or surname Other uses Gervaise (film), 1956 French film directed by René Clément Gervaise Macquart, 1995 opera by
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 0xaf3f1a8fdd45a3a2c33cd229c1c46ea6818856e852117462b8c444570973b3db. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd8839c0-22b7-4fca-a481-51bf6737643f.json and https://artists.proofprofile.net/proofs/artist/fd8839c0-22b7-4fca-a481-51bf6737643f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).