{"copyright_id":"0x4f23cf1db6a779f636eb2c54d54e5c1aacb1faffabc66fa7213fb8b1f7deede3","name":"eLeotro Dark","registered_at":"2026-06-21T10:38:39Z","symbol":"NIM1900387","token_address":"0xc64f1106c8601f0dd8f7c2734e88992edeb6cb8f","type":"artist","uuid":"eb8a3ed7-3072-44bc-bcea-a591fe63ff9a"}
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 0x4f23cf1db6a779f636eb2c54d54e5c1aacb1faffabc66fa7213fb8b1f7deede3. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb8a3ed7-3072-44bc-bcea-a591fe63ff9a.json and https://artists.proofprofile.net/proofs/artist/eb8a3ed7-3072-44bc-bcea-a591fe63ff9a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.