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 0xadc37ea47121f1577335e883d4b4caf9a9e5c31b1da86eb8c2652daca84a3f16. 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/cc80ddde-ed23-4937-890c-39fd251cc4f6.json and https://artists.proofprofile.net/proofs/artist/cc80ddde-ed23-4937-890c-39fd251cc4f6.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 0x01363916dd8cf2c5bf2d65cc86745020b8afccd1efe979419b13219902b6812e. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:22:54Z), 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/MXF399403817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad916f2cbdf7af1fc596c74eb20a0b7d191106d5235c71302dd1dcc435255129. 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/MXF399403818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30b58b58abf983abd4a3489fb21c211f17e5d10a0069a40f82be07ef68ed7e2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/MXF399403826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dc9964ee627d6f6204fe4c64a661a1d1c40283a60263c5e1c9d8b4f9287c7a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/MXF399403808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b4085743e06423c1a8aecf66455bbc1be0cb3e98c806969045cb82b47d9965. 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/MXF399403777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f07cae3e3d9fca11535b413dfe9573bd59bf31abd2024bf92d244bad2b736d. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/MXF399403784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f1cfcf07bd13f2d047ae07410aee8bb0fad909dcac3d4f2fe0bbb50c9c3819. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/MXF399403790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd58cc1c80c4fd3101701180e9761963821cbe2114032d7356e95fc83f593d1. 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/MXF399702106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac3da1982e01cab14ea8460ab16934d618d1eb73f60571fb243b87c9f0fb532. 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/MXF399702098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fe0f61792c65c4234708f6bfa6c4f29fda368592090a81485c4f672220e8ec. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/MXF399702100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f148abd71cd9b5122eddebe65b3afb839282a5fa89265dfcbe53d167b72234. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:09:36Z), 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/MXF399702107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2c6d8ddb7ef81f5a2903ae732db36295aa810c5708cdbb957a716fccbb0f0d. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:49:31Z), 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/MXF399702104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9ee481c5b7d292126a188ed7a62e2cfbf5ccc20ea29539ce734b94205fbb52. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/MXF399802237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb8e778914e2246e39d9257bded5efad0e1b84686646b908023e2617142f649. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:41:59Z), 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/MXF399802240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a155768ed35b76b817634e2e6302785e231e86add59c2e914c54b3637b5aa24. 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/MXF399802242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d29aaa7be01328ea9491fa806111b8ef05cce9e5243ef4caf7ba3021c96905f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/MXF399802342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac6e043198cef6be87a82a2ad80ab91b6e71ff1b599a8e61b4ff215f2fe642b. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/MXF399802349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79883b88ad9777cffc5711ac7552e32bafc65b143d8eb97ffbab97208ccc3981. 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/MXF399501669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08192b85b00e697a9f63a8ae681e31b1ba7d42c669a276bfd3931cbcd7ae57af. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/MXF399601854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a52c2be87ac9764a1b5790b696c5c9677165f2a3b7be99bf4d3fcbfa4f6aa3. 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/MXF399601861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cf2bb0a651015193ddb88dfb50b30b38db7358c9eda7e774f536f88e629ab8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USDHM1600768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4553519773da94a9831cd61d195d535f6173a32b4e0b40386a44ec0d537b6e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USDHM1600769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f3f88f0b0c6e58f5c9bc77607314c5307918f338271b757cbfcee7f40303af. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDHM1600770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ff884117bc73072af726e2ca75f2231da6a4c420768359aacc9e4bf2787a65. 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/USDHM1600771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dd91f5395cfcea6799072d34f843fa718e1202f9e024b862f2e56bcc580924. 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/USDHM1600773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5785eb2c7eb2d6ffcbc315ea899b3f0f6e7f825ff135cdc65cc0d3cbb6458d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:36:12Z), 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/USDHM1600776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62b34de6ef0dca8ee6866ed3606201c9a89753374fda2c02d0ea1faadf722ac. 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/USDHM1600780.
Columba / Juana la Cubana / La Gallina / Despegadito / Cumbia Caliente / Cumbia de la Cobra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e0e2a8302c09366feeb85e7c9acfede671026b42e505085c618d7a723b011a. 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/QZMZ92536771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d993572e69de9059c0f372d23592ac91dc7b2159af401131a29c18b52b6dd9. 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/QM6DC1664404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe31cc0d430c7566f819a6b7e93f121876d0852b587b689337c4d149bf876117. 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/QM6DC1528897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a086a1e5bdcd5a8d46f0b453f641f00462331ab68469be5dc7a1933d9711b73. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM6DC1528901.
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