Barré is a surname, and may refer to: Adhémar Barré de Saint-Venant, (1797–1886), French mathematician and mechanician Adriana Barré (born 1995), Ecuadorian footballer Alexandra Barré (born 1958),
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8732d10f80b23ddb17e10d015f709431c847473244abda97877e167bfff0e3. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e5bc8dc-8fac-4176-b1c7-7a680a89d75b.json and https://artists.proofprofile.net/proofs/artist/8e5bc8dc-8fac-4176-b1c7-7a680a89d75b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).