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 0x59c7868b8f8c77c7a0a3efd285c56144875039f4ccc9f1842bd3f26c419b6848. 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/9f94ad22-5c94-4433-8375-b0649ed1db75.json and https://artists.proofprofile.net/proofs/artist/9f94ad22-5c94-4433-8375-b0649ed1db75.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 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 0x3754c001dccaf2464b081d2d137a41b12868bcaab06b881222c4ff9ebbf949c8. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FR9W10603795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe740603d1d53418ee8d87b7072d41cc2dcc63b9ac051d09d8c689cc52a1611e3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W10603796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749ebbf5bbfdb9ac7190d900896a5f9ce42a95768717c099a5f1e3397f42f724. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR9W10603803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee45426838660694e0363bd956ab326a5d09753672bc60ec508cd28173cb4cc. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR9W10906185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629b781aed6e1742919aeadc806fb2069afdfc14a5cd82d2869eb51c02343a30. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR9W10906190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef65cfa8c57a0e44d3aca700fbbac108b9f27a609e6f85d5b2ce4f7e05b748c0. 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/FR9W11109932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de66cb1f95ae370bb8e71325735035c4ffa42e675f3c6c9171e83550baf7fea. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR9W11415216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed9e7fe2eb525bb8403f7fca3a3d05336410c861d4f2b15d5799e60e0b0df7e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W11415217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a50844770362c19d2b511402497e78b31ac9ae1b473a2599ac6db6a9114ae2. 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/FR9W11509752.
Un vrai bonhomme (Bande originale du film) [Extended]
La Révolution (Music from the Netflix Original Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94490ee8b6ecf6f211cb368e1f4917c9006bdd0f992e5e13f2de287f62fee37c. 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/QZ8BZ2000699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4980716a5e1007fd7a48a4694840b5b1952c3a042b9d6b7d64da6314698c5b47. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ8BZ2000700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffbd73d2c293cb56a1a24f94da40adab8a38905bd0458aa872c04c68dab21c9. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZ8BZ2000702.
Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2, "Moonlight": I. Adagio sostenuto - S A Y C E T Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da209192c492ea74400667972b7542535a1daf0ce7d29c993e3d993f82c1cd4. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZ8BZ2000703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3676b88a7134013fece6a7d2b2f62e118ebd190b39c96a651e447259a8b49f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZ8BZ2000705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511d370e6839bb49125c82469e37ff378a90d6d4821b15cc74243b7830169a14. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZ8BZ2000707.
Marche pour la cérémonie des Turcs - S A Y C E T Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1737b8358a8ae098f0e3909b1d4e5bdaf397cf65a9a2a4214a83554e1c98055. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZ8BZ2000708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9b4c8101647ede026dece5d8e8800824dde674d8cbc2dadfa5a40470044fba. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ8BZ2000709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca38965056e9943a5128e5cff262e3f1325cae3479dfea1cc6880f6288735d9f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZ8BZ2000710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc009fec662a3ddb90cf42817afd8210f0f5900cdfdeb35da446f13f4dcafe2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ8BZ2000711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28712df9f37f8e9860378455764acdf8fcca3dd1d0eaa60ebd75699657efb1cb. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZ8BZ2000712.
Messa Solaris (Recorded at Château de Versailles in 2020)
Messa Solaris - Recorded at Château de Versailles in 2020
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e7b786a48cf1dac40a4b3df647cff3fd080c69bdc0d4b6339f9e6daddc3c2f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR7HU2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e290f581032042d5768a0b3fb13219aabcd81850ece788b6f96d486137c96a5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR7HU2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea59f7d4c3810e4402d56c9142acf53cf91b69a8e2d7365ea18a8a43c7cad1ed. 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/FR7HU2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05023c37748c55254bd93954e8ad6ce9bc7d4abeed4d4ce03639e5db2e83e13. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR7HU2100040.
Mi iubita mon amour (Bande originale du film)
Au plus près des requins (Bande originale du film)
TMAX (From "Du crépitement sous les néons")
Du crépitement sous les néons (Bande originale du film)
Ceux qui restent (From "MH370, la vérité disparue")
MH370, la vérité disparue (Bande originale de la série documentaire)
Flore (Extrait de bande originale de la série "Les Disparues de la Gare")
Flore - Extrait de bande originale de la série "Les Disparues de la Gare"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8476f6d6ed6c52e2b72de508ff55994f76da9be2d5eca09a2154146b6fd53cf4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR9W12550024.
Les Disparues de la Gare (Bande originale de la série)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35f43c1ffc0836187d0074a9a5b50457b64836c27d264f9bd7482f4aeb72e6b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR7LB1700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa145ea69b613caa7e5771a05ac7f1d2b6859d7262d391022db1c50bed7342e7. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/FR9W11603950.
Le café abstrait by Raphaël Marionneau, Vol. 12 (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff0af0d4cf9121569d140416e6269a42e0275da6a85beb8a1608404330871ba. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FR9W11418081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b9d6352168295f205dc9954cde4f6638f601bfde650abc51a51bcebd8739fd. 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/FR8N92001540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdc2082896c7a354b662067bd4184e1974073b715b9d0221452d3de2790b92f. 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/FR8N92001550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6814b2e5a4ec3654567af740e90a67cdddcc6a592665b31ab25f06516ac715e1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR8N92001580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fda166b65cf14ed62f8fdcf068b001549ebc99becf23faaac4e4dce00af448. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR8N92001590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb14b14d56e37f7fd5f5c8215c3252af5079791121686af5265e6583c119fa57. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR8N92001620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e290f581032042d5768a0b3fb13219aabcd81850ece788b6f96d486137c96a5. 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/FR7HU2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2d492162e169afc272a628e24317a0f020f0b6f5f8d0df54c8ae4227ede53b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR8N92001640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6344c74fd7b0f7a75ff8c34f1f14a78813e399cac47c5fb42e4e17a0b23df1ec. 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/FR7HU2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03e09bcfe9bb4b39657fd2d50cbad6f5f239e3c81851c7fd7446001aa3b3d12. 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/FR8N92001660.