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 0x16e634490acadd87f1f9714463cb95fbe1a3435d6998bbd83e067160076483a0. 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/f8d27b29-6ea3-49cd-b0ff-6ab2a224a6e1.json and https://artists.proofprofile.net/proofs/artist/f8d27b29-6ea3-49cd-b0ff-6ab2a224a6e1.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 0x6d5f106a2b740374690b6ea041404ce7a0664487602057c2a36bb7461730b4fe. 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/US83Z2238989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc2903b5f1c1bcf2b57f4fadfdbc537d238d967508f5b24c7bff98ba00b1fb4. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/US83Z2320207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2da81c5b80db2eeb8bd29cb5b483780a3423e9b826c5b96968fd937659f023b. 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/US83Z2326346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923d2415b5a16e3e652bbff45c5923b6c8e397abac6417593c606e4e4f374e36. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/US83Z2348973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd0d3e68a2fda5d21336c143fe456a454ac4636a537d1556b948a43ed66dc8b. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/US83Z2353668.
Rosa Maria (Billy Esteban & Karno B Remix)
Rosa Maria - Billy Esteban & Karno B Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208e99e7f23555f8aefa8d7a49346432e66f321a9858095bd6b5d226a8ed9a0d. 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/US83Z2355983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3474a85a6eded9d527c220d38b3383c3f8aabde8224ffa993b5bcb1e66280d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US83Z2465078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76eeda7057e63b40b9e10a6ed20fc566c0961bdefbe51fac30f4107c9d226c12. 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/QZNWQ2486293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1ca081db28047b33d6a51800a13eda4712c2243c5afc0b1ad40fc90e2c88df. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/US83Z2473045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc579eb2984546f7edf9f7e5a08809e6e43c8a6b708353d41f9b375ecc356e451. 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/US83Z2474025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c5b3e94d8bd45b02e48a00b8a72c3f00bf0376c06dcf5ab4d91ec9391485cb. 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/US83Z2476618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7bdf1e79cce41d9c309d1abe14a591f9c9f499902e49f9617bd482248a9613. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZTAW2487496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4454dac1a5fa949e842d160f52cf58219e62003636b98f3a046cd32bef2b7c11. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZTAY2417340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553e2e3f3c43a044a6a794624834075fdefa49435e43818f53dd69062db8e997. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/US83Z2401524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfd048e9fc1a41d66e1b7a3b5013a985da3f5e29fc0d4e189e592e770abf4dd. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/US83Z2412446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcef31998d42e6bd4f1caaff5e07f1acf4f86ca2e015f73cacc3c6626b1f5646. 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/US83Z2416591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802127a4e15ab41ad0d1d9b569c9ce37726348f1d7e3f5da0780f79e09b2fee3. 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/US83Z2418858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbeed4f2138cc017526c87a16a3e11d46e222e924fef34dce9ff3fbb27e4a4f. 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/US83Z2420742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7510862a5f8e3a8b04b83696d0544ac77f869e216a81d8c86b77f4fdbf02d77. 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/US83Z2423458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643e72db2b4cdbb9eb643b48f94ee748ea137e561af0b62cbb2ceea4acd35af1. 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/US83Z2429678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf811f0202c8c032c603f4012236b2ab34bfaae9715071e65e8c76590201fcfb4. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/US83Z2504507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e393f3e03d85e99e321f61af68d0d2a2c9586af95207403f66c3ff5145b9efa. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/US83Z2512688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ca8908342c85f687bc040b2de8779ba6455f0fb9ae489ef9dd5c5d12fc50ca. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/US83Z2523831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558c92d60d5e07952985201a51646ba042e9c3cd9a9bd403b91cc815caed02a7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/US83Z2525011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9124c454cee5aad570dbe036353076b2a47c527ea0f4664baa37f539b2f2d05f. 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/US83Z2527213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32403caf03e75acd159b0d88087ad02abd40336c24b0211f22240672c76e3ae1. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/US83Z2528965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9273424fa17df75dc54aa627a9430deb0bb7850ab8916ecdb0c488ba2dfbd341. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/US83Z2529641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a1cf66133936e7292a6276051279f1ebb1be7b93848b23770c677ae0a744f7. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/US83Z2536731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13be0d7ed8c8640d255282212a5ca8153cf9cbd81b1734ae84a34ba103a025d8. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/US83Z2527026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268655a509a4920aeaabcd696b8d4c3e32d68cc814d9a033ec609886fa14899b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/US83Z2529629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8985558efd2e87f91513ddf4c111fee7bae1c9dded7de68e60aa333627315f5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US83Z2529921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b52027f0a448738dfdbd728a60203ce882211b4aad1b6f59afd7023dc936afb. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T01:09:53Z), 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/QZZ7M2560978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e01276df7ad7add219d6975edd17c03c71b818cd6a876292588337824e06ba. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/US83Z2558798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05648f2676dea4f5681931cfdc4c2d7307ee420c7a7030580e50d75320ccd45. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/US83Z2555565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1ca081db28047b33d6a51800a13eda4712c2243c5afc0b1ad40fc90e2c88df. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/US83Z2473045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edfcc905aa0cbcd3dae1119745bea89c8b1942952fa95238379268f4df68741. 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/US83Z2344650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c5b3e94d8bd45b02e48a00b8a72c3f00bf0376c06dcf5ab4d91ec9391485cb. 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/US83Z2476618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c5b3e94d8bd45b02e48a00b8a72c3f00bf0376c06dcf5ab4d91ec9391485cb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US83Z2476618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc579eb2984546f7edf9f7e5a08809e6e43c8a6b708353d41f9b375ecc356e451. 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/US83Z2474025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc579eb2984546f7edf9f7e5a08809e6e43c8a6b708353d41f9b375ecc356e451. 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/US83Z2474025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6bc92be7e3cd78c7c05f437982462a75773a9c08298242b76bd4234fd58a07. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/US83Z2430962.