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 0xe1b61d4232aad8acdd6beb3e4d91af30530263d3a32682a3754b294b15a92461. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22dc6648-aba3-4a37-8305-a4047cd6ba30.json and https://artists.proofprofile.net/proofs/artist/22dc6648-aba3-4a37-8305-a4047cd6ba30.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Perles de musette (Le roi de l'ambiance)
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 0xf5ab610519fc91b5b454e9ad9d459209e5dad005fe3579e8dc18144a40f694e5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR63R9600227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf103b5b61232b59d5a81a4f1f9bf8d4338d2ce9456476e09629ae315ea8d3caf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR63R9900388.
Le soleil doit briller pour tout l'monde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133733ef55bbbd1452ff682e66813752e4208f92cb6f0cb78d6692fcd50ee32d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/FR63R9300121.
La chanson du tour (feat. Daniel Mangeas)
Un siècle de chansons françaises, Vol. 2
Chansons à boire et musette rétro, Vol. 7
Michel Pruvot chante ses plus belles chansons d'amour
Maxi Best Of : les plus grands succès du musette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605fd6e08acc5e5ddd57bdcde6465e40f1c0aac73b218c24e193adf062acbe05. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FRY409300010.
Michel Pruvot chante la tendresse et l'amour
Un siècle de chansons françaises, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e05d0dd796b684a126206e3c33f83c519799ebe58653dcaa0f9c14148889290. 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/FRY409000012.