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 0xa056ec2eabb28f0feaa2d5a12f3ab29fe4aa8da6d62b8a1ec61801f42e9cb0e6. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d3d3e97-3afc-4b10-bd6c-f8dd8541103c.json and https://artists.proofprofile.net/proofs/artist/4d3d3e97-3afc-4b10-bd6c-f8dd8541103c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La traversée (Bande originale du film Jérôme Cornuau)
Secrets of War (Original Motion Movie Soundtrack)
Egon Schiele - Death and the Maiden (Original Motion Picture Soundtrack)
Eng Nei Zäit (Original Motion Picture Soundtrack)
Fritzi (Original Motion Picture Soundtrack)
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 0x6f24b028266f120a525d68b7ea8cf40ec34d57da09f73c1385254ebb36878c2d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR4EO1600016.
Mission Ulja Funk (Original Motion Picture Soundtrack)
Rivière-perdue (Bande originale de la série télévisée)
Fox and Hare save the Forest (Original Motion Picture Soundtrack)
Vos en Haas redden het bos (Originele Soundtrack)
Vos en Haas redden het bos (Originele Vlaamse Soundtrack)