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 0x174efcb990a73032afc4d3125469870d4bcee3fbdcf44828b21c18b8dc2c3a44. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/047f17ac-57c3-444d-8c9b-c490c930048f.json and https://artists.proofprofile.net/proofs/artist/047f17ac-57c3-444d-8c9b-c490c930048f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x00835007d39f4a7da2b2d5b0a7c3aa8f748abfd46c0a8fa2366f750b6bdd5677. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR40F9700070.
Le Grand Orchestre Du Splendid Chante Boris Vian
Jolies chansons d'enfance, Vol. 4: Pirouette Cacahouète
Jolies chansons d'enfance, Vol. 3: En passant par la Lorraine
Jolies chansons d'enfance, Vol. 2: Au clair de la lune
Jolies chansons d'enfance, vol. 2 : Au clair de la lune... mon ami Pierrot
Jolies chansons d'enfance, Vol. 5: Maman les p'tits bateaux
Jolies chansons d'enfance, Vol. 1: C'est la mère Michel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a79d3285ec72ede5d40670acfa7a27df2fe3e83087290712c0ade8858461223. 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/FRE410100010.
Jolies chansons d'enfance, vol. 5 : Maman les petits bateaux... qui vont sur l'eau
Jolies chansons d'enfance, vol. 1 : C'est la mère Michel... qui a perdu son chat
Jolies chansons d'enfance, Vol. 6: Trois jeunes tambours
Jolies chansons d'enfance, vol. 6 : Trois jeunes tambours... s'en revenaient de guerre
Jolies chansons d'enfance, Vol. 7: Savez-vous planter les choux ?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752c218acd0c18850a9575123a3e6529ad2a88cb60e912a9c10a715d6a2790e9. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRE401600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8561a78760769bb8444dad1e98816e556d5fb9dcc56a8ff8f4e94df504d4b0ca. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:46Z), 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/FRE401600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbd84db2b7c385bf2e5bbfe2c9744481b2e1c108d6932090523e63404e7de78. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FRE401600150.