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 0x8b2b5397024ce287bc1ff27c9674628db74e7fb37c73c73bbaceca0b7767ff46. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a95cf40a-4f05-4d4f-9f76-336f9ae632ef.json and https://artists.proofprofile.net/proofs/artist/a95cf40a-4f05-4d4f-9f76-336f9ae632ef.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 0x5941d978589497df43217ea8516a737f0851e06d76d8ba103d6cb6409281a202. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/MXF550909879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21f7ad5e84a0a8b823707d5bd58f70649ae89a2f3143929a267c6bb55cca44f. 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/MXF550909880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39932b74177b9e0e48dbcf079af1d75d3b6dd626ca4f27185f25b73719c2383f. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:43:46Z), 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/MXF550909882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd1799273b41975f44bf3be8228cfeb4e9077a4774d9e0ea3b05d78cfbcc359. 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/MXF550909886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63061b6ab73ce34d8ec9214842aed9cd8b44af7374a942234fa76919dfb48bed. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/MXF550909888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf89b2e32e3ff184910385db4852f942bf2deaf95f230e4885f7d1fd1a8f8647. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/MXF550909889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd589ef1a2b0ca3f5dcebf4c72a0bb199aeda4cfcae2c006c34c0d75856cece6. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:05:35Z), 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/MXF550909890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf546477a8d0715031e34b6cab41c5c1b1f3ccbc9d0d75bf05c8ab7012d404b00. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/MXF550909891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fccafc5826c9cdbec06161760078c414b5b45a541050749486e822cda1d884b. 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/MXF550909856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65f687e5d0d94435ab446282f1686fb19be435654baeedb2cf8d421d5163853. 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/MXF550909860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf032e54323f9c0da49f5edbfa230f1c9128396b8e87dc3b11f5e334bbc4cc20f. 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/MXF550909862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59c7032475c85df737550926a77c97c0db9ca59a0aa870b28df8451fd610e3f. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/MXF550909863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed116ccaef271943fb96d60a7d38ee8dd31ab0b68963976168bb3811fdc8118. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MXF550909866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59986262117cff762b96940ea00e20506ed239a1dd93c347a5ce8f30e8e6222a. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/MXF550909921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125ab77372ddf8c2188aaaa98248150f954317ef3486dcf30e0348827b80862d. 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/MXF550909924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fd329abab3fccdab239ab2d415496a7dac8c4b60530efe6dfcb440f17b5132. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:20:35Z), 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/MXF550909926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fd6f7af74583ac6ea260b3ea4e45ee32b82c2f36445a0f1f114f2fa539ab4b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:45:04Z), 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/MXF550909928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1440149450889cd8bafc01b1b2bba9d0de12e820a0e754d73cf3c640c9c60c4. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/MXF550909929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd18d1e89117c99dd8a359a53980492543c64d2b02f8e2d343aac8508819811. 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/MXF550909930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254d958bab6c978b508869f8097cf6ba05d33d8ecd007d9a09c02a6738f46030. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:37:22Z), 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/MXF550909932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf480004193cd2905f1ea6e48c269e2eb8a5fe07c5ce88993f14035afbaf03841. 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/MXF550909935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34832198fff77138f0bfa925c63f047bac054e307e72bb4c02438a48d99a3fbe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MXF550909815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529fe373ceacbf269a158c603149b824989660dc91c07e3f879e5b68eaca63e6. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/MXF550909817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691bd27ba14a0726834c4df8c9fdcba3f3c7cb954d339d9d62ba266fb05d514c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/MXF550909819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4109a99c8b06f3c1a0eea2f5ad1fb87ab05e4c07af01929297d9530ad0e062f. 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/MXF550909822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce102aa7d38c0b29f31a530bcb3c9ad0f699b9e670ff5e3aa14f3d153a9360e. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/MXF550909826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bb63b725d5ca3afae75ec4e00a6a359b4ddf995bbd832104e54c8ec4ee7a2b. 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/MXF551153240.
Quinceañera, Valses de Strauss, Mexicanos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ecec1bd136f9bbfdd7c2e9ddeac714306b8937869fb6a949f5dddc9d4b4e8b. 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/MXF550812938.