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 0x3043ea22f2f6435da9b3f9d73bf6271497f12f14e3871e51ad6d5d5f49fa20f7. 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/c445d1ce-625a-4a2b-b17e-7415a79796c5.json and https://artists.proofprofile.net/proofs/artist/c445d1ce-625a-4a2b-b17e-7415a79796c5.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 0x180dc45fcfab81de70c27562736284feda9746ed3b917504b4b5659c65abc31c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6M2138462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6389982c0fdbd0fd418413d388187ab349acc06135eaf2d80c9c2aff07d82f3a. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:04:57Z), 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/QZK6H2182790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0113c28224362e29c24945a196b5065bbb695f284e6d5f30ab34c3b85f17bf. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:02:17Z), 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/QZK6F2175371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af6119e1a08a6724ffb41dfe31f5858f7bbfdf9dd5eda4daf5f1fbf09fd77fe. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZK6F2175784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9628a508acc655405181a5209af713368e41e30fc57b571e9ebc15c44506fdf7. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:23Z), 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/QZK6F2173596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd1d061d4ffea91da36a80a7584cef033839054410d90030c69dd5cda927355. 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/QZK6F2197447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07502dd7cc0a81eb5bb641c78fcd53983b62e8d3c8069a995702a44855e8e7ee. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:58:30Z), 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/QZNWV2152311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f6ac0df151aea54437037d3adb7040bf4094963093bf25cae39e9dcadbbebf. 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/QZNWV2152315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9395b6e6256080248c7e03550f81e3b0ede43db2d73a530346c2ccd9f0c76a4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:12:26Z), 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/QZNWV2152317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241a51a1ad17bf7c70a63b9c5e3318a5b550e8886bfa5a06c565d93f0d46cac8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:39:55Z), 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/QZNWV2152318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5619e209f379376e0d913e5ce9dbf68b1397521525372ad79b275bfc69a5336d. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZNWV2152319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b47e692d50740f6b795cb241b2a54c76ae8292d799a5c54862064b874bfd9c. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:46:23Z), 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/QZNWV2152320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc67b096b0878805f49b64a0fb0ebb9cc8c261c8bea4f9fca04436b4dab0c60. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZNWY2105436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0241916e9d4f646ac206811aa36a2635d0b9caa984f76ceaff5882e5f448eced. 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/QZNWY2105437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d0ccdcc7aaa61deae7125ad74e07188c6c21cb2ba59aaac308b8f42ad55777. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZNWY2105439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7055d829c9e334eecf5d1279d4903bb3701011b7c5766ac4d34f28918d17f546. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:51Z), 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/QZNWY2105442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05685a338f3b579273c1b04e1cffb76eb1fe897e902a900e0ea6ecebfd001375. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:43:32Z), 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/QZNWY2105443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba191a85a75ce9e5bb10db1ae88ee62b94f3d15e3e2328078e5904028ce62045. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNWY2105446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5779cace4c099e8c7cf1e9a049a527d97b0f65971d8be6fa7a907fc7e2573c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:50:55Z), 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/QZNWY2133307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3262961d434760f02b612fc0977a3b5f6bf92053c70867df9adc3a86825312af. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:02:15Z), 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/QZNWY2133309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1e45751e648cf6a9a181aa3c2a07e42ff8ac4a0208249fa19ee196972ac750. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:35:03Z), 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/QZNWY2133310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36b664a9ee7655270d0cdb48e36623e6b043a6913a44ad774fc7340f9119489. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:05:41Z), 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/QZNWY2133313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f590e30c07fbd5b284785ece3e9639133bb5f2542f9abf9351e64349a09f55f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:05:57Z), 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/QZNWY2133314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538cb6ff5ee339b2dddb1d0ed4b0f9e8b0680d9fbefab5a1215fb6cdbfcf7834. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:01:41Z), 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/QZNWY2133318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809217d74fc6a304c6305b14ccd64d942adb8440f49e4fad61be6c5286d8432b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:03:16Z), 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/QZMEQ2274887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d21db426e41437102fd083a56503157c5c69fb99df71b011d0489de45aebef. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZMEQ2274889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df48a56181da18dec07547826f3f1da2bd1048e69cd221894c3613c99ff4359. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:36:00Z), 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/QZMEQ2274894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f921c4934021e1e68804874e8cd83876feaaaa536f0a78f3d7477ee4949e57. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:47:47Z), 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/QZMEQ2274896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0410330c44a0d87e0149cc8ff99bb4722a1bf904f7a8591a456e2890a98b75ba. 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/QZMEQ2274897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4dec2c5721276c07125c2878d8da0c0d3def05648c9a8f1904cdd3851aa60e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:33:25Z), 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/QZMEQ2274899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0fc975dedf253fae2cb72168fde607ba0278dbcbbc504ed19d8d79baeeb319. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZTAS2220829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8529402daa5c5920999dad4d0bcfdee96dbd52ac788cd2c5c7171c74bf86ac7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTBB2202603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5cae48a690087eb53a14e1070cd020586005b675a0fc2a8ceae85a93fe295c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZTBB2202605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376830ca42e873b8710c3e9dc94f452c6c161319e21d1f77abe40b3e97282638. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:37:55Z), 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/QZTBB2202608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9dc8d9370bf80c407834233bef4d0a6a3d961d4cababe9dd07f106e315fedd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:38Z), 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/QZTBB2202611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e1efb4d2515863ffc313a1fd692a47cf640a43418e20e6c3427e2b500e19ff. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:01:31Z), 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/QZTBB2202612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d02347a15b007487f67d379eeaec90a6d4ba2fca006410c3371b2a50e798299. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:37Z), 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/QZTBA2287423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c3e337f6d73e7183bf83cf11f514227d430de8712243a009ca9cbf107240f4. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:57Z), 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/QZMEP2379274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4d3e00c101d4e5288ce665980dd8ab4fca0e046420d91bcc6e6554f57fa097. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:28:19Z), 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/QZMEP2379279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c2ebd57c9acf4060a0637040294ee3ce3ab9100c9fae3d6e8c2d2fbe8c8065. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:02:48Z), 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/QZMEP2379281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4ba6dbecb7e6983fd5282a7150ee5875b6e8eaa4d04a8f8fa91eb8bfb438ae. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:44Z), 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/QZMEP2379282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4399cdf356eebd117b9ed9a6fb7cd283aaa161456b7b69fcce16a8b17ff5f352. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:07:39Z), 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/QZMEP2379284.