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 0xd33ff28691c86c3d8c7b272421fabfe59e5006532afda7dd6847022d7be02059. 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/f8b8f6fe-76bb-49c6-b7b6-f9894021a5a8.json and https://artists.proofprofile.net/proofs/artist/f8b8f6fe-76bb-49c6-b7b6-f9894021a5a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
En Vivo en La Fiesta de la Vendimia de Peralillo
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 0x24d8641864b7d512a1485070efba7ee75cab68c443a14de39aed151f7f03e6bc. 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/QMFME1548381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2400efd53e0d71bed5a06b539ee3780e3efb09f2c5ca3120eb6abba8614f60c1. 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/QMFME1548382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d2724363cd32e63c29a6dfa307725ae8c3c877e5ea1cf94d375c981fe12ee2. 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/QMFME1548383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31957c57a4005bedb7a3d388611d1332e60d6387c9caeeb0ad619e4b57b5c3f9. 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/QMFME1548384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd63f61c8931db251ccf964681bf0249d929502d869a559e286d141c69e7d6ab. 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/QMFME1548385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40257557e6e4c5693dffb363b7078c103236ffe39f01735a68cea754823cb67. 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/QMFME1548386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bbcc47afe348727d52e00e6117738939b714eb2c62b5255cfb13983f54526e. 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/QMFME1548387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1967b4177965de7619027f8f159c627e14a77fa0acffe5a6fdd7edae17d56269. 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/QMFME1548388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e6ade6453be9627fd92176e83fb72cbf936ab0fa49741cd27a52428845c403. 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/QMFME1548389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ded671c0193605376051dc76e988d2508b8b7ba94a92055bc9d4f085295034a. 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/QMFME1548390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1df921647d9b635174cdff03a63685b59bc6183b728f80979ccaeca03e97a1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFME1548391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4172e843c1a4bde7d80dfe767e22535e60a557e74e14f5b56a54bd2139176c9d. 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/QMFME1548392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90d886b5badf5884188ed25b7d57629ce1f84e28fb7b97797c80ec004e0338f. 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/US3DF2092249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75f57832d9b3b950423e239dd482e7cdb9c2ae635d5bcc9991ad494c4043b2d. 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/US3DF2078458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76abfd95926d8499471aed67a660b42ebb5e9255d5cddd41dc29a3b7c49fc2bb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US3DF2078459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854ad068159c5a28c07c481257ea79d0d3d9562f337e394dbd3184a1ce22f173. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US3DF2078462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822d25807eab61bf2a95c86ada6fc027e02aa91446ca75d3de074f78eb7849f4. 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/US3DF2078463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac19f7cc2c0eea927ad2213c7f54dfb0cbdf64c5dfc17d4043ef99368ad8d5d. 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/US3DF2078464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f66146cf8a2c320be86eff0c4a61895fd36e6987aaf0dbc156d92e8e213147. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US3DF2078465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f69770579542e03cbdb874dc7c701ce4990d114ec918b517f896e680f20dfe. 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/US3DF2078467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cef80afc8976a29deab79f3dd738755b6409c6d7106f95ae4c630fde20b757c. 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/CLUM71902830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96873eaae59ca53e3057e86e8fcffa38b27ef4eb7c68d4da78ab05f0c4d7bd81. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/CLUM71902838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b51c2c7bd3d34a0f1a1ff6f5ae43de933fd2e0628935eca2a5d57176b107ef4. 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/CLUM71902847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea5b1a800aab3c5ef39e2428d055e8e8a1db68a762d1d79fef81432c711be90. 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/CLUM71902837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b8f6de3c09c0993e6cfed3cadcc0cffdc42458d7650808eb0f84e7b5cfbe14. 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/CLUM71902850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de8817dfd0b9a5bf38575bdaf48e640b3174d698710ea17461516dc13364268. 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/CLUM71902845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd345143850723023d10dae76bed80e35efa080ed795bf6011302d384c7386254. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/CLUM71902841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47a92870b4759a754a39e6507313bebbc20197bf7452744aa077c834c399812. 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/CLUM71902849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04b104528c8d30615bca07743be3a13d661eaa3d7bf896b7c9366ced2bf4da6. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/CLUM71902836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005c4de425374a708fd761b7421b426c8e34bc8a82081c6b2eeefbf155803387. 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/CLUM71902861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c63bf359347764c18710b9cb21fd490296f34c51a6396e9ac0fa98d583a4264. 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/CLUM71902835.
La Vaca Blanca / La Carta N°3 / Una Aventura
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55225b2e3f51353b36f18415db1e7cee363d13841b74778694cb1ed1add55db4. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/US3DF2099302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235c704f48d0de2f1875f989a4a400fb9de0965cb9734c6d4d9e1254f7c13ce9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CLBB28600088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684f00181b223f58abdc2e365bb1d08c0ba18954a4cf5ed20349b656ecdfde0f. 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/CLBB20400717.