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 0x98910e88f517ce70327466d7e80cc7b266dc3cdd39996d4cad5abba487a027f4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0cd70ab8-3a60-4a46-ab1f-badb34fbee2a.json and https://artists.proofprofile.net/proofs/artist/0cd70ab8-3a60-4a46-ab1f-badb34fbee2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La plus belle fille du monde / O Nathalie (feat. Paul Mauriat et son orchestre) [Mono Version]
L'Amour fait la loi / Ramona (feat. Raymond Lefèvre et son orchestre) [Mono Version]
Notre concerto / Banjo-Boy (feat. Raymond Lefèvre et son orchestre) [Mono Version]
L'amour fait la loi (feat. Raymond Lefèvre et son orchestre) [Mono Version]
Toi ma madone (feat. Paul Mauriat et son orchestre) [Mono Version]
La terre (feat. Jean Bouchety et son orchestre) [Mono Version]
Mon amour disparu / Ya ya ya ya (feat. Paul Mauriat et son orchestre) [Mono Version]
Le chemin de la joie (feat. Jean Bouchéty et son orchestre) [Mono Version]
Quand le soleil était là (feat. Jean Bouchéty et son orchestre) [Mono Version]
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 0x8e7cd2b26218b82cd3ad9a403333b2159b3c312d296e19958c51412994f888a7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USV351489785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50e307091f0b059aace6739c4b91fed66ed305dcd3d47800eaed99b2b22995a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USV351489786.