Sergio Enrique Catalán, Maru Barrios, Natalia Sosa
{"copyright_id":"0x8b55cda22b4e9fb4544b4e27a186cc5226aa0b08f7c43f309b5be96d1bca891e","name":"Sergio Enrique Catalán, Maru Barrios, Natalia Sosa","registered_at":"2026-06-21T01:58:15Z","symbol":"NIM1784648","token_address":"0x70ac5394094fbe3206abb0cae4f43d9ad5db51b0","type":"artist","uuid":"d398bccd-229f-4df4-96b5-4105ee3fed47"}
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 0x8b55cda22b4e9fb4544b4e27a186cc5226aa0b08f7c43f309b5be96d1bca891e. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d398bccd-229f-4df4-96b5-4105ee3fed47.json and https://artists.proofprofile.net/proofs/artist/d398bccd-229f-4df4-96b5-4105ee3fed47.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).