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 0xcc10ee9ba8a84df638f6c0efd68777bae5887d0f66b81895b0e52b07f50a24d3. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d4f494e-639f-4f61-a84e-8668a9fc3a81.json and https://artists.proofprofile.net/proofs/artist/3d4f494e-639f-4f61-a84e-8668a9fc3a81.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
History of the World 2: From the French Revolution to the Cyber Revolution
L'enfer d'Henri-Georges Clouzot (Inferno)
L'opéra des assassins (Musique originale du film de Jean-Christophe Rosé)
Chamans, les maîtres du désordre (Bande originale du film de Jean-Michel Corillion)
Les Rois guerriers de Sibérie (Musique du téléfilm de Benoit Ségur)
La France sous les bombes alliées 1940-1945 (Original Motion Picture Soundtrack)
6 Juin 1944 - La lumière de l'aube (Musique du film documentaire de Jean-Christophe Rosé)
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 0x68084edb69d9674d333a8f55bfa92419efc2fd7e4fd5f5f5be993b277745b560. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRZPA1420840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb87da534d5b1273f2d490f7397ae546d073bae6ae4b75fde5280f16c9373d7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRZPA1421030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524293bc5b43cfa8d4e1f705c242ba9ce5d78154eb85104a88fba829ac176526. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:37Z), 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/FRZPA1421040.
La légende du tour de France (Bande originale du documentaire)
Opération Anthropoïde (Bande originale du documentaire de Jarmila Buzcova)
Le dernier refuge (Bande originale du film)
Primo carnera: una storia italiana (Musique originale du film)
Une route pour Xiao Jiang (Musique originale du film)
Les animaux dans la guerre (Musique originale du film)
Une route pour Kargyak (Musique originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70af17732e63b17375f198a0ffbbf3132882ca6402e7e28f725400dd61c0f8f3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRZPA2016130.
L'enfer d'Henri-Georges Clouzot (Original Motion Picture Soundtrack)
Becoming Woman in Zanskar - Musique Originale de Bruno Alexiu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed808f216facc4ef3679815654147c4c578261a958095565ffe80a13820a5db. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRZPA1004320.