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 0xe2f3eff89394070c88e1d55c2ee58e7fe74f53641e5049ca7c027beb11aa8e96. 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/7d7e9ca0-4dcf-49ba-b646-b87f73d9a626.json and https://artists.proofprofile.net/proofs/artist/7d7e9ca0-4dcf-49ba-b646-b87f73d9a626.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 0x09c745eeab6f1b981b990dc70b82b41a1366dd321a8c13f2e35c51e684ae9770. 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/GBKQU2405629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90681d8937e21f70b0528984be930e21416fac1b6b21587a2ac3a56eb07336ca. 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/AEA3A2302721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4816b47aea2e5cc950f3f1f8501c66cb4c4749fe400cb827a97353ce01978f32. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AEA3A2305523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e60ee5cf317f56c437b72e2f36e0013b4ca2b84c9992c302a3b0af37fd0eb8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/AEA3A2305521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a08b74afe0f326e11727f101453459a4e21f7b49afe8dd757d075b948f71d5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SGB502397289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ef9b12bb2fddec238808c1917e88c54eab84305d17e19170055ef20ba36ecd. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:49:35Z), 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/AEA3A2306140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dae7259b2b94fea8e7e060f5bb16a0943cf354b8a163a2e667dd533f6aa595. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/AEA3A2306141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a00439d2eaa0248c580246d364f48af60260ff2ee8568be7adaf3cc093ac521. 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/SGB502505936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc16f8fab2e8d376c0c7b1f334a1d0559d6dcd51f4d7845365ac7197d47ab97. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SGB502507444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ab496677297f48cd374d18650f1bf1a2bbccb9f0c7a4feeb7e86a31aedd257. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USUYG1705826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4620a679f24f9f48006f123c349d5ccdd4039ee1dabd60572707f9cafce866. 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/USUYG1705827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4f6e26b747348a40b9b8906b0ae49dfb6ae63bf46911a0b0c73a88602f5efd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SGB502504456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32466fa551b19bedc6d4446dfb45ef772f9e857569abb2a281f5d87eb6e43c67. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:43:13Z), 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/SGB502504838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ea1e61886d93e3229ba2af3edaeae899babc3a09a437acacc07346515d6889. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/SGB502508276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0254002eba2bc35826f9e217e0458677426b3973803415370f689eb893ac7c21. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:22:59Z), 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/SGB502508342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc426ba89d8ad9503be910a93380b7586f76b3df4ed480d5e31ac1d2cc53e062d. 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/SGB502506205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0254002eba2bc35826f9e217e0458677426b3973803415370f689eb893ac7c21. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/SGB502508342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc426ba89d8ad9503be910a93380b7586f76b3df4ed480d5e31ac1d2cc53e062d. 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/SGB502506205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1b421ffa32b721df93ebc9457d693441bf0ad933d70709f42fc5a2b327f763. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:40:02Z), 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/SGW502500469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623969c8f6201da7a737a4211ade89321ddf4f66de44924c1270e9b451827aff. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM7282505041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16a08a08c5aa2e3a17f5c0a628dbceacb05a2b5427324ac33f61bc59df751c5. 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/QM7282505043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b96b6703407f5628938c1865ad0f137890e8ae375bc116f1e6a9e4307df88ea. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:09:02Z), 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/QM7282505044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278581d0eb93f6b784fa6464639f83a260b501f07a97e6e1b1a4b130486b5d9c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:51:53Z), 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/QM7282505045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a36756cd86ab73554a4c21a71cea9915c702b4803ca4e6dbacb57117a48c22. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:44:09Z), 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/SGW502508876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0caa8e6fe973ad1e323456500b80880d6dd54f1de8b852452d325b672c0511. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SGW502509810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfba5f4bab0035a88c1acca046160f403573dfb28e6145455e4e31c899ce03d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/SGW502507010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fca4a142f86b5b0e61c4288c057a5a5ce62fbe4e9a105486a418357f7c0bac3. 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/SGW502506408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb49829ce93159e29390cbaab0c6bb2bcc576aeb7c836b4bcad41a1d594a2e3a. 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/SGW502501508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad67d604f5cadf5e25759c32eab9db10557fd975122b744239f9ba939d0a777a. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QMDA62514064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fbd595647efacb91deb472645d2eb4ac3caead817b3f084622d876e80f5cf4. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QMDA62514065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b8e86eeb073389a3a3f271286849148973f2fce69f51ff555eda332960ff41. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:17:41Z), 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/QMDA62514066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ba7dca9b3f06c2c0f90269119e6fdf0d4a1329dbfbec8f2e15e293e2eb1cc0. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QMDA62514067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818054404c12d2aadc78479897d51cc6a09c1f04dbff6a0fc1c511211c982e20. 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/QMDA62514068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0513d4752a4d413be0ea7f75e4e7454c94014a8829cb29ff1ecaa3ecf01c831e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QMFME2500922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe1330bc40f874f6887caa658aa9c10e188cc1ef8cbcb874ae69c2c85d9a306. 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/QMFME2500925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779e2fa95eae69138a8a4ebd392fde126cea128b62d2d26d970d2dfb828a5e55. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QMFMF2517175.