{"copyright_id":"0xde89fa7e04cecddbddffa6e4756b7bdf8ae1b09dfa265d4dcb829e600df50eb3","name":"Kontras Quartet","registered_at":"2026-06-11T23:34:06Z","symbol":"NIM0137963","token_address":"0x010bad7d5ac4d1b932b8b63b1759bd4ab8ad559f","type":"artist","uuid":"69de4f42-4eaf-4d42-a580-02eac2f4272a"}
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 0xde89fa7e04cecddbddffa6e4756b7bdf8ae1b09dfa265d4dcb829e600df50eb3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69de4f42-4eaf-4d42-a580-02eac2f4272a.json and https://artists.proofprofile.net/proofs/artist/69de4f42-4eaf-4d42-a580-02eac2f4272a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Origins: Volans, Koumatsu, Stravinsky and Visconti