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 0x602d7b45580f8b9bb540ad0330e18f773d106d85e87cb94f3f6cf3837deb1b3f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5c9888b-66d5-4fd8-9ccf-f86fa53ae57b.json and https://artists.proofprofile.net/proofs/artist/b5c9888b-66d5-4fd8-9ccf-f86fa53ae57b.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 0x960b18e65e3aacca5be4ef2dea1cf73e685ec3bfcd75b8920d0e92ead5bdeb17. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCACR1657919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651e04bf57e93fbc8e681f62941490fbc69c7e55a2b14457ac50082a0046a867. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/TCACR1657925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67f8ca850aa65cfce94974d2c21484024cb225bff9bb9279c1fb7088cefe8b1. 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/TCACR1657946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9097757fbda73ab88c597842bec0355522b8c47165053cd1a023b95368b959f5. 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/QZ9JZ1720942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7098699553d923d0bf5c28461e23cdf2bb373dfab7dc996f1ec5a1c9881b39. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZ9JZ1742968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1648e383aada80791142a740b04541b98d530068346cb86ce4f0409d734af647. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:29:44Z), 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/QZ9Y21700393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836bad6db5efdbf0810a5f172e3277923bafc893be2a26567d9191646db0b4b5. 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/QZAPG1717471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144d4e24d64ac7ba8248c1316ee3a3ea0e6ecee979e9392de618633a2da29504. 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/GBKQU1812096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6cde40801c0aa799c2ce408dd113760061b1a7d4cea6bfefb05bb7dbfb3964. 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/GBKQU1812099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209b09b8a7941d72c5265afb53c178481d354e09f055d5722dd027bc7d0e5058. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBKQU1812100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11831a2f6bf5672053eb1923d17b56ebfe428095e86835ee803b1fc7516bfff. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMPKX1832988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff5b4bcaa7fcd3f82ba0859fe4c2612f0c26c3d9b730f1c9bde68fc8655e6e3. 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/QZES91858079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28da8b5e75782c31a51a4c7b0ac1a3336a327a65850aa1a3f90693be007c7ead. 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/GBKQU1923512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dfcfdf2247868f9659d669e043d110ab5c2848b54ae4ccfacd85c47f0cf3d1. 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/GBKQU1923520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648547b51524bdec91ea0ac3852e116718d031f2b2d628426f05137599e1cdef. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:01:46Z), 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/QZFZ61976945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798d9cb19cb98d3155744f2b8192b74c6c52f57a52eb5d5337cbbe313ba4dafb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NL1LE2000759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d20977965e9081a6a101cb2e8efde469d217eb00472255a4c7439ea9bc3b09. 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/NL1LE2102164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db3529eca3b002505d595627505afb9dd674abd267bc34061db88906b70b2ee. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NL1LE2102499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeab9ebc2aa45d343a0985a3dc66c7959c1ccadf151aa5781210dcb73a12d10. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZES82207539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9720d75ec4be3ce1d37ee73a09d9929bb6e21731bce1377afa3f4f3870e325. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/NL1LE2202854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf265b88becca0b43f7384ef6516b93406306f64b9c6be1ef7cc2258906297713. 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/NL1LE2302969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7415250c216ab2c92da7f687b5fa07dd1c0845f653ddfdcc54e51e1428ebb9. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:21:58Z), 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/DEQ022384172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3078528447a4674b6b1aeffd43e2df209a24e9ee6d09083ad7c0f95db2475ab. 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/US3DF2479088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd614cc4d1200d5549b08a3bef3f0559f54a3130cb2dc9383092374b85221109b. 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/NL1LE2403544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732564b2cd0483c47101449bf9ee6c76a34e36812a380424a351d0086d3c2b79. 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/GBKQU1916703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8697528abcab4e0620cc0609b311e110f941c2de932d9636d0346b64c35a8bcf. 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/CA5KR1801765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc2bcc563fb0d7857efd694ce466ffe7cee1e2afd0676cd2940ced7eb24047e. 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/NL1LE2000934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17626cddb33e96bb6cfba7afb6db6bb0c76c02a89dd33ed60b6819051d5f6e99. 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/NL1LE2000507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d336200468a151f107b41a83f275bf3eadb88c2d075be680b3f077311ac9be. 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/NL1LE1900255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb01beacd58568a576eca9bd00ae50235b6c749835042315395bc508b067437. 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/QZFYX2011621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d1d587bf7ad5b6168058ab9d2bceaab40176d077073b6e995c37c14b9652ab. 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/QZES51897994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf265b88becca0b43f7384ef6516b93406306f64b9c6be1ef7cc2258906297713. 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/NL1LE2302969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb025fdec88db1c6da5ffa3a707e45a1f3420e34cb3b67b78d2f9d314183f3e57. 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/TCAEN1970770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db3529eca3b002505d595627505afb9dd674abd267bc34061db88906b70b2ee. 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/NL1LE2102499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732564b2cd0483c47101449bf9ee6c76a34e36812a380424a351d0086d3c2b79. 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/GBKQU1916703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d336200468a151f107b41a83f275bf3eadb88c2d075be680b3f077311ac9be. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NL1LE1900255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e892b9d1d616dd5740e8bff75c88cd2a156f3e7af88001433518f73aa4a6e0e. 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/TCADC1749036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42503aad02663e1db1317a9d180c9c83d71c477180dc5bdea3ab5c5bcc8eb1b8. 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/TCACP1614743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d728a7c815f3f1595dd054b6932237367f33f35099374e9e3fc7cccdbabcc8b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ESA012056589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0d9265aa96c56ce6d930758ebac61d5d78d9487ee7a5a27f50e019103e908d. 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/ESA012056610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd47f0a3abc28caf060499bd8be83a3393c2526f8c79847c2de7a6bd9def90e5. 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/GBKQU1886847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8913c99e717ab29e48d83e03a3d69b0fc96b16609226c3fa0214f0c4688b8e8a. 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/NL1LE2102379.