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 0x4a4d220e00f7975507101f38d0e544c76bfe04c39eedbeabec4b059619e1b98d. 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/2b1883a9-22b2-4a5c-af31-8dc3c3830fc8.json and https://artists.proofprofile.net/proofs/artist/2b1883a9-22b2-4a5c-af31-8dc3c3830fc8.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 0x76664b0fdbc87b2c14f3bd7efd95b98c570c016f653b099453dfcd88b8ffa964. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRR419300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042fa7270350cf0565140757c1c69f4c9341ae380869d1ad98d29e437c95a659. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRR419300014.
Meurtres à l'abbaye de Rouen (Bande originale du film de Christian Bonnet)
Les brumes du souvenir (Original Motion Picture Soundtrack)
La Sainte Famille (Original Motion Picture Soundtrack)
Les murs du souvenir (Bande originale du film)
Agathe Koltès (Bande originale de la série)
Meurtres en Corrèze (Bande originale du film)
La faute à Rousseau (Bande originale de la série)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7932a5743fcdf300a6e29718714d3aa623b95c3e73528c88c4fe46dd401b09e2. 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/FR00V2100002.
La faute à Rousseau Saison 2 (Bande originale de la série)
La dernière reine de Tahiti (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a0a767a41855804c697ca7f04f46ee3d8a6ce1389e4aae29efc169beeb0845. 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/FR00V2200124.