Valentina Ponomaryova, Mark Pekarsky Percussion Ensemble, Sergei Skripka, State Symphony Cinema Orchestra
{"copyright_id":"0xda4b7037b752eacc49360a6bb9d803461a96915d76f6941541b659e5ab0503d3","name":"Valentina Ponomaryova, Mark Pekarsky Percussion Ensemble, Sergei Skripka, State Symphony Cinema Orchestra","registered_at":"2026-06-21T04:18:17Z","symbol":"NIM1813686","token_address":"0x61a3a83a173500905a796b341231b46d70a8e32d","type":"artist","uuid":"d9875a04-5fe0-474e-9e3f-db9ec3359138"}
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 0xda4b7037b752eacc49360a6bb9d803461a96915d76f6941541b659e5ab0503d3. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9875a04-5fe0-474e-9e3f-db9ec3359138.json and https://artists.proofprofile.net/proofs/artist/d9875a04-5fe0-474e-9e3f-db9ec3359138.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).