{"copyright_id":"0x909fcca8390d422db90dae2dec6afcf9e0dfdefbb3bba6c1ebd197f2fc9f636e","name":"De Limburgse Zusjes","registered_at":"2026-06-16T09:46:15Z","symbol":"NIM1013367","token_address":"0xb9d0acc51b3b051e83be2b077039c1bb91f5d91d","type":"artist","uuid":"3a095248-ecc1-426d-8e1e-0fe11747b48a"}
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 0x909fcca8390d422db90dae2dec6afcf9e0dfdefbb3bba6c1ebd197f2fc9f636e. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a095248-ecc1-426d-8e1e-0fe11747b48a.json and https://artists.proofprofile.net/proofs/artist/3a095248-ecc1-426d-8e1e-0fe11747b48a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hollandse Hitmedley: Ik Sta op Wacht / Poen, Poen, Poen, Poen / Wenen / 't Huiske / De Trappelzak - Boogie ......
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 0x70d4ad7214eb460e4a7ea8f51596cad7da0e87217893c581f994942d5ea1e589. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLHR51273993.
Hollandse Hitmedley: Vrij en Blij / Hoor, De Muzikanten / Als Een Wilde Orchidee / Kijk Eens in de Poppetjes van Mijn....
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f27bcacc796c5d40f51aefa725da07f638cfaf4404ce815ec26d65dc76aaff1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLHR51273975.