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 0xfdf99a17073a80b9179c62f76894ea2650841dd5eb2d403f2ecc657925c7dd06. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/566679cb-f3dc-4df5-a380-ce48ffc752cf.json and https://artists.proofprofile.net/proofs/artist/566679cb-f3dc-4df5-a380-ce48ffc752cf.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 0xfedfac8dcc0558be4684fbd6db7ae688e6b6df5cc6e8d2320d94741a860bae9e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US4XG0303589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6556796439175478f487bd504882a011304a40922a12c6f015c8c2035fcc7b1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US4XG0303590.
México y Cuba: Una Historia de Música y Amor, Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739608375683a7cdcf9be5f8c80aad38541accc1c69ff06183cd7d8446813f71. 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/USA560948789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296b2d7f709a6d0ebc35f965019a8f2bd36f5a75e5017b7285f33a8da24575bc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USV291479027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8848fe24d15350ed613c0389ef94fccc4c50d34018767e7211074f5bb8d5cd53. 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/USV291479029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac19b8b058b8d22773cffac98dca93164c3ea2dd66d58805b3fba5896b8df006. 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/USV291479030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354d595fa86a68bcae194be5633284ded8fc593e769a9df44d32a727ac34f32f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USV291479032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8740e87eaee56ac88b57334465b454dda79a1b0bfcb2eb9aaba2c94b5f56c366. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USV291479036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee2a8ce7110c5bdd940e0f3ec3432254a8d33cfb459e3b5a5674e29ba09808. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USV291479038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de2af26f2776bf466cc1db87364c738745ed1689319e8439f4e5ea474b9464c. 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/QMDA71418305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e2de9ffbf0a25bf0cb81cb701e526b3c589b0fbfd91a287fcd8e096f66342e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZPL52100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce9132b15a7bb5633713e8720cce4ac4aeda77f89c0529473c1e62e76d230c6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA71595008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e47a4ba36997e94fd8af7b90cea93ffe1e1cf3ef7f5b4f705f86e972193aec. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMDA71595014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22c20eb93db6fc22ec774a1d63b273351898cc633512092802e22f79b9646d7. 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/QMDA71595021.
Dos Lindas Voces del Recuerdo: Juan Arvizu y René Cabel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbd1507b67b3218f1e2d067a1626082a5c40be36c014417c1c79e0546599714. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR96X1836519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb803850d4675501674fe27cf499888b5e7f155508fdd027db047638c2185857. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X1836523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae66d555ace106bfea6f9e1c3a8957884412ece46a327efcfc79a58d52fecf5. 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/QZPL52100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa612cf45520e088928e4b62cc191caa548e0f2f9e1556efa282c880ba82f1b24. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US4XG0203209.
12 Canciones de Amor y Voces Involvidables, Vol. 16
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646288f700a80eacae5441e0d1b051feb35c946d21c6db69de4533fa5f120480. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6N21467430.
12 Canciones de Amor y Voces Inolvidables, Vol. 4
Boleros Románticos Y sus Mejores Interpretes
Hoy Teatro Marti Función De Gala Con Rita Montaner
Tradicionales de Platino Jorge Villamil, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcbc3052dafa4b9be69b75ee559b3b456289040c79a67d9fad18ebba97239de. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR96X2029664.
Los Grandes del Bolero, Vol. 1 (Interpretan a Tony Fergo)