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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a4b0f4e2d81e2d8276d09185cde4e9283bad9bb2e4cab0da3fb6a46630c491. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f218bce-3396-4463-bec0-a39713094323.json and https://artists.proofprofile.net/proofs/artist/9f218bce-3396-4463-bec0-a39713094323.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Darcelys chante Marseille et le midi (Mono Version)
La valse de Magali / Je n'ai plus mon cabanon (feat. Jean Faustin et son orchestre) [Mono Version]
La chanson du cabanon (feat. Jean Faustin et son orchestre) [Mono Version]
La chanson du cabanon / C'est un pays près d'Avignon... (feat. Jean Faustin et son orchestre) [Mono Version]
Vacances provençales (feat. Jean Faustin et son orchestre) [Mono Version]
La java bleue (feat. Jean Faustin et son orchestre) [Mono Version]
Le Noël des petits santons (Mono Version)
Opérettes marseillaises (Collection "Opérette")
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43a81205a45aa568e48008b9865016c8f5236ae857493ad82dbd409f60814c1. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEBL61087199.
Un Petit Cabanon Pas Plus Grand Qu'un Mouchoir De Poche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05d2ffda958fb193c3c9993711c34379d3f400b401b334bd57e0f5c83afd4af. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR6V89200258.