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 0xc38f834677fc124002a62bbb0f9dd8f3acf36d68f548c07db0f7cb2809c9ffa0. 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/197bb96b-eb31-4bc7-b9a1-65aca56c0db7.json and https://artists.proofprofile.net/proofs/artist/197bb96b-eb31-4bc7-b9a1-65aca56c0db7.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 0x998fcddd9ba401035c8d47abcf9a541f038fadff2d320e5dc7544938d5c0d336. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5AB2303695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f5a4689a2e0f78d4a653f90f9a1ba2306e18e1412fbe76fffdaf6433d70a56. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLS2377241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdf685e6bbddfadbd83244e012e733f39cc0360383dcb0bb1d792a692322afe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLS2377239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6fe01979e898a9d45ca1c2f4b564ae0c5fa5c8b1571c3216175a4824d612de. 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/QZ5AB2303701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0d8700fd0a56d84d346bc723d18bf92621dfa833304881e4f08db041175425. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMHUY1558394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e8ac02d1233c88f51f13eb9b0abc1d85988dc4e64597d7e99ab7cda61c2ec0. 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/QMHUY1558395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e764c790a5a72ea0d511f87e431c0f90447df499cae04f7dedf98f8f0a55690. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMHUY1558396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1415d9a1c4eb36f6b5cbfa8d2edc511251a472f0c4d3f447ac9e1cf6baf468. 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/QMHUY1558397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c319465a8881414d36ba6a6a5bae430ca3821add34e3c6728209b43cf2536b. 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/QMHUY1558398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c8be249e9f95b63ce6163898e1d375482b149e5e042596b44203ddde50e179. 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/QMHUY1558399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaab02ac28c21e6e558e3c3a7cea1a2c899553462d5aa82a7def3b45cccdb85a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMHUY1558400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75f507d53b665d987d9055e9d90f30276fdb88d58c1ff0c12edec1cdd2b5104. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMHUY1558401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b877df772701e522982f7c2a104ee393672690d0877574e6f62552458b67bf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMHUY1558402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8458bd3faf748df469787317d77dc46a132a7921c7b3fe0795132d72ab15a22f. 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/QMHUY1558403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c688439b78f9ce999ec1795772230f5b88fe0773e412a92afb7c547f1ca9c5. 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/QMHUY1558404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30963d5a186cd4afa035fbe7f70905ac171064ec0254fa3529d31b4a892f479c. 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/QMHUY1558405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f96cfa9a024cc2a0d8bc445ce490d083c7ae1377794f24a04e37f336e09e4e9. 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/QMHUY1558406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c6c06286188ad3c99d935e22bd422e087a6462520d828d7dfdf2c97a49bdfc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMHUY1558407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e5354759321ed90a089776a496d544fcf5c09a3a6885238391633c9c079b20. 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/QMHUY1558408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932cd869594fcfc91e0e26d1e6a6331492d4d7f6aded227a960f794930b1575a. 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/US7VG2393057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaff469e6ca3718a5e223490232ef2493ea0ccef18d60cd4c7c139a30b2ab338. 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/QM6P42210130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32af075a11902a6571c1eaee576e66f9be2b258aa7ecb2ea6a624f7a8ce9c1d. 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/QZHZ41980104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998fcddd9ba401035c8d47abcf9a541f038fadff2d320e5dc7544938d5c0d336. 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/QZ5AB2303695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6fe01979e898a9d45ca1c2f4b564ae0c5fa5c8b1571c3216175a4824d612de. 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/QZ5AB2303701.
Sinfonico Presenta: Me Compré un Full (Genio Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa780cbf5890a3161ff657a92fbb9dc02b5cb57b82145a3804958bedd2bd101f. 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/USM1C2001430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6216f0f272423c2b169607886e9a48ce5efa6f31d8ff0f66ffe38fb78aaf4c7. 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/USM1C2001429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9b382e89416356e390b7c9117a55e5fa718bd55e710e3172114c64c40ec933. 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/USM1C2001432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600fbbb886999fda91c52cc50371bd2ef6509cfb913aeb0b4204ad3cf4d5a40f. 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/QMKXD1803026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165f05a852b6a1d52c7fb0ab84b7f1c41869cc33bbd341f221d2c30c1a252a22. 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/QMRSZ2001224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3376a33adf2858cc56f6c0a083f5e460e45de5a6e074971c94d09e8b2b6a92ea. 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/QMRSZ2001229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f9df8bf544fd3506e3a5916713c9b1b66f386c2c75af41906b961f1e3f2a50. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US7VG2547349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb506af98cd6d01a2f46e1bff8637081c40ad5c7f686133a8c91d8ab094da923e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US7VG2547350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34405d89369e5b443ed23c50692bcdcbabaa22e1ed6f9f7ce8d354d13fc5cb61. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US7VG2547351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487fd179a0d8389c7381d6c08c156dfa64125b34b5f472c770435716cb772412. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US7VG2547352.