Dječji Zbor Župe Krista Kralja U Zagrebu
{"copyright_id":"0x635e2d2deecaf10b08a4554d58bb0390bbdc3aecadad3ee31650a4e1cc2943dd","name":"Dječji Zbor Župe Krista Kralja U Zagrebu","registered_at":"2026-06-15T14:25:44Z","symbol":"NIM0736340","token_address":"0x34b05bf17e0f76820a444be7535e12aaa78e4a3a","type":"artist","uuid":"02d38e35-5787-4f56-930e-a147dfd7aa4a"}
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 0x635e2d2deecaf10b08a4554d58bb0390bbdc3aecadad3ee31650a4e1cc2943dd. Chain 2 (Bitcoin): anchored in block 953857 (2026-06-15T23:34:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02d38e35-5787-4f56-930e-a147dfd7aa4a.json and https://artists.proofprofile.net/proofs/artist/02d38e35-5787-4f56-930e-a147dfd7aa4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223ebd82504114c0d73c78266812bf02ef1f18bd56faa9029f076cbab2075aed. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HRA381400764.