{"copyright_id":"0xcfe2735ad6dccba28c9eca1bbc341c39cddca5c1cc0815bcb238b29206fed221","name":"Anonymes Haut Doubs","registered_at":"2026-06-20T16:35:15Z","symbol":"NIM1654685","token_address":"0xdfe8faf29f158e6d12ae6c5502dc0edda90b409f","type":"artist","uuid":"b9f95f55-a7c4-464f-95aa-b759f2c1c2c8"}
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 0xcfe2735ad6dccba28c9eca1bbc341c39cddca5c1cc0815bcb238b29206fed221. 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/b9f95f55-a7c4-464f-95aa-b759f2c1c2c8.json and https://artists.proofprofile.net/proofs/artist/b9f95f55-a7c4-464f-95aa-b759f2c1c2c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).