{"copyright_id":"0xbfa73ea5ce6f14769edcdfcdabab27b3d2ea66ae42dcdeffddac39a80692d3b5","name":"Sumitra Bauri","registered_at":"2026-06-21T01:21:55Z","symbol":"NIM1775380","token_address":"0x8022f8a19cf5f2f95b11d8bad4a10bf9e5c516a9","type":"artist","uuid":"d101bab0-abd6-400d-a82c-050f4123dab6"}
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 0xbfa73ea5ce6f14769edcdfcdabab27b3d2ea66ae42dcdeffddac39a80692d3b5. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d101bab0-abd6-400d-a82c-050f4123dab6.json and https://artists.proofprofile.net/proofs/artist/d101bab0-abd6-400d-a82c-050f4123dab6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).