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 0x67860813e83ac32ac21d7058c0af61f72cce33a0ded41745089c54d6ce47e4d1. 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/d0139037-374e-459c-b8e6-7b7722079a62.json and https://artists.proofprofile.net/proofs/artist/d0139037-374e-459c-b8e6-7b7722079a62.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 0x1f78564bff187d5307a39fa817298cafbaf7e94596a447e5d8f982c3c6d8b89a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:39:57Z), 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/QZW9N2226277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d790be0c1a685d48b7533a4dcd81476df4b973029c5ea94a75019e3bfa2ae40. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US7VG2321777.
Ni en Defensa Propia / Las Dos Hermanitas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2868a8c1abff10a6196b29842f35a6c77e3a9bbf9e04256d20907dbd690d5cda. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:51:59Z), 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/US7VG2321778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccb16d9a51ba92b116e35626039ea1a7d051f1892a194506e34bd2ba8255258. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:40:34Z), 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/US7VG2321782.
Oye Mi Cariñito / Vamos P al Baile / Quiero Saber de Ti / Navegar Navegar / Déjenme Llorar Amigos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45a9422d38ba9865bd734a999e66e1b5d51fcaa3bb2047e290ef15b0b9ef7ff. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US7VG2321784.
La Profesora/ La Micaela / Amiga de Cantinas / Arrullo Mañanero / Antes Que Se Acabe el Mundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7207a63b6663027871ab0f461c3c125fb6f3dbcbc4f67958ecacdd2e1a951e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/US7VG2321785.
Megamix: Anoche Me Acosté Curado / De Vacaciones / Será Que Fue Extrañarme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c39d888f03f939c196a45b3799b01154e26aa7bbeeb40a9895a051d0e1e879. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZMZ92388511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4d94ac7d6dc22891f82a7c94b2f21a78fbf9f545fb6c7000e73fd6e93c4efe. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZGLS2398496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2b21eb809aa82d7e23d8cf003af271d51a19c8609035b8edb4add7bc66a247. 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/QZNJV2384183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecafb9170f261c9c5d56214fc602da0bc3e0ec446c95e800adaeb141d63f05c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNJV2384186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847f01b69df0b64dbf4f56a222f9fc8af0330a6babcb7d1e1164edd0f63e7ccb. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZNJV2384187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5311c92897167b84712c2aff630d6d81789a131f820cc077372aac630c3ef192. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZNJV2384191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c0083263c18db9fb5814357ec9f90c20cbe3d5c6cc9474d8e60a71979b43c1. 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/QZNJV2384194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de278d7264b8c7fd3ae5bca992651df281c938eebd98736775f697f03eb985a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US7VG2414043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcf0e7d87c42b8b9fd0e7fe550f282b9e741eda7d89f704f7e52f0e4b70f34a. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/US7VG2414044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c904377cfc321a40041c3327589ef7d91012c0238731e4a09175beadd95382b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:48:36Z), 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/US7VG2414045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8ea437b6b39f501d95e008809df7fb768d966616ffea5dab31d3fbee2c7c46. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US7VG2414052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fe41b55c340c9db835f1af4fcf0b18c7854d54f7842cf5a62ab99e988d0526. 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/US7VG2414053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1f26980fa49f11c9d3ac22b7c8a5c780b0b8c91bcc0377f676951a9263c7fe. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTVM2491086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde327c310f6234ce01e849958dfbc9bffa630a44bef6477e0b65bef41198422. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZTVM2491088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217c9cd3deb55b48cb81f3a6c22140db4d14765d32f6a3fb61b9bb0849829d39. 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/QZTVM2491089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83d4abf2cabe89e91664e510ebd8b6b115dc2c2d50fe623ea65e928f890e051. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZTVM2491092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44771250159e6300a9e4083da7812ec695f93adf290bb660bb94e819bbd16a5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTVM2491094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164327192118c877b26df93b1e367bec87f95ea696d04e0152420b04996dd191. 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/QZTVM2491096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32e24fcd551298f395c96b0fe6cb91a3a821eaf619712180d8dff7626303e0b. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZGLS2525831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcf8cd3b1400263d3c86de80b649604ab1816847a7249c738fe7e2640e3dfba. 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/QZMZ92561555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654f50dd1891b2e0b70e5f881b468815f6beb54fa112775fcffe538fbc45aabb. 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/QZMZ92561557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266cc547992429e8a3caf80c12a124cc58bd6b83cacb8b9923fb60232787ecec. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:28Z), 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/QZMZ92561558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9412d8d536466f50fc0329e86fa8742c64e9f0dfdf1f3a2a9e1f51eec2196ef9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZMZ92561559.