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 0xd823598f73f74757019295e0d2ace9d4d007299de89115a3ee225e09088b9021. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ca6d9cf-8e31-4251-9372-cf1bebd878b8.json and https://artists.proofprofile.net/proofs/artist/6ca6d9cf-8e31-4251-9372-cf1bebd878b8.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 0x94dab5e6c21e96a529aa39dca193a0707192803759b42ac4090e7a719b2c9a69. 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/JPJ901419780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a679ed89473bbc53f4a5a017171ca0b2a33ec5210bc3b05bbe3fd35ae0dff8a. 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/JPJ901509480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77783cc5d3d7b7b32cf878cb28f749e0fca2e025799ad5ac5a0ac5ea766b6046. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/JPJ901509490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3d179a2f5ce5c7e04ca084c3331fb669bf4463702443b09359491150d5b5f5. 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/JPJ901509510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2364913d51e7528a20c8efb5f911c05586ca740352e0800e66c4ed7db46128. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:05:25Z), 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/JPJ901612320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570f9c135ffaa819b45322c2b297c975bf80aaa8384b4a139228f0131c15fd7b. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/JPJ901612330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ed05013d53ac3dffe5326cde25f59e48bd6d95b79d9fb3f0e0af8d3549d0f7. 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/JPJ901612340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c137241ded50a253d7392d781a4b0cadd0bc9e95c4b0e22409e640569b1dfc. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:27:31Z), 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/JPJ901612360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d6e73ae76ef4632a4faa63fd68c8cc1cf65548cac33cf557a240bea3d84147. 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/JPJ901612370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee338f3fd5f254c98289dc1fd63322f1986ee1175162e4990a5608a88829d064. 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/JPJ901612380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee02bf234f96a25b03091a1ee7616550a4ff28aee28dd418060df14bd31b0c0. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/JPJ901705310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f1ca3cbcbec964c383e60c4ab5cd5faa93bb4d3cb8860c038a3385ed603966. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPJ901705320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a6af781df95aa2850153df8cd31bda47e268eb421ff28b8b2e39ffc3718d40. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/JPJ901705330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4ecc972ae8e2b2952709544239d37db3132bc08a6739f06ab0a684c1328e65. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPJ901705350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fa9b74424d8d20bf3b8cfcec9e255f5670b7990a999fe9ab0b180eff8bdae2. 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/JPJ901705360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f457d73155e49dd89d9f76086211c24d8437b9106b4fe51bb957991b3b77fb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPJ901805360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0438e4c20559cd5d06bc1749ab4d52255c5b8ba61d4d26959edf05be1806dcc. 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/JPJ901810110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2b5fcaf3c7f5bda8c65348db221bc3329d4b65f564cb9c4d01f3ac81bbd9b2. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/JPJ901810120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4d908a21785cf148a7dd1e3a8def991d11d6b10671efa19e11e5bde7444f3d. 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/JPJ901810160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe017dc4c09aefcd0ae045eb052e89412e12ea76a042a1c7315e98d5973091d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPB451905209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f79e07259b0830cfb7d8cf7f9e6cbae4451a5de0fe7fac7dfe5510d19e7f8f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:08:51Z), 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/JPB451905210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d5649e9324d9fd56576455e5a54e5f6011fc35f0ec0a89cee6e0c2a87fbc88. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/JPB451905211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f66158f7455a97d361573a458afae51d8ddf8a879221b2321a0256795cab489. 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/JPB452005447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c851703596331ee9ab44dd6bb4d62d4cf5fa77cfaf8041938bdecc706a77dcd. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:47Z), 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/JPB452005448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4e7b840842d0fe7cf89672363b88227d1f85274fbf6f8e9ac771117e0a9fb8. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/JPB452005499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f515124bf7952de188a3816717844097f13aac0af9382edf0c3becadbf1433c. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/JPB452005620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87fd4cc6332f7f0f330d5730b9edd19b021a94772b187cd8d3343e8d79bb1a3. 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/JPB452005622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f29d0de8af2b504d90e30c1dad71e98045c149a036cff26d840329e2910e324. 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/JPB452105821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87fd4cc6332f7f0f330d5730b9edd19b021a94772b187cd8d3343e8d79bb1a3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPB452005622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc633a68f6609da1be08e4c66295b5a5791ff99e21379de4d318328922d5b84. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPB452005621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27af7704ad9d745b3db3766d97abcc1293990363a8ffbff12e1298ac2d34f6ff. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPU2213196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8438893aa9b8381bc87bac93e11662a4e18d3964777e927ece4de013d18e3e1f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPB452306205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e8ee7a6e11816e0dff3689354ba63bb1f6c820eca76564952caaba7ea957d2. 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/JPB452306311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb81bbf31ef60bb128ae4781100514e2c290e9203e53bc4c5cdd0baa3192643. 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/JPB452406346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0438eaccdbf2e488294cab9ca00ce40cc016493afc31560899aadaa13e0733. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCJPB2439851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c783b6250b81b5fee5326e29e77f7991e4e9df18a7c8431b9b8d7ec51d45922. 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/TCJPH2561871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d24bf8b5f1874b7bcabdcd5222b72da982f6cdc9f2fcd12156f3d1148cd46a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCJPH2562035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437cd017cba1d47f5ea92bff90d16ed348c81c6661ee7352afb693dae80a3935. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/TCJPH2562043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f2958bf604b02a053244817c23e71b08d18e8700d56ac9d417941c3248b79c. 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/TCJPH2562079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0438eaccdbf2e488294cab9ca00ce40cc016493afc31560899aadaa13e0733. 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/TCJPB2439851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffc2ecf22e6de11e800b1f9bb39fa824224dc927d828d3b970022358ce60ef6. 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/TCJPH2562094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed62d50b644838dc6044e06a9e852650a046852a275fbb9ca53a79efcac9ef1b. 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/TCJPH2562095.