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 0xd5b8e69a4437973d694c2b27e2f7b5361a6eb86f7cfbb46bd580c4d9d3ad1e34. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02d94dd9-4c3a-40ff-80d9-d431fc8b3c86.json and https://artists.proofprofile.net/proofs/artist/02d94dd9-4c3a-40ff-80d9-d431fc8b3c86.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Clasicos del alma, Kasandra La Condesa de Montecristo (Special Version)