1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x9e62f1ed0a829161e9925307bf5af9af52db93f89a8f2fb485ea57ba0ee1a3ae. 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/fb2d05d9-2dc9-4151-a090-1fd33f3745c6.json and https://artists.proofprofile.net/proofs/artist/fb2d05d9-2dc9-4151-a090-1fd33f3745c6.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 → block OTSBitcoinBlock must exist at that height 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 0x76c6dde5ee5c13f2171adf3ec484d2e3de502e60ecbe029b9321d8a85b175251. 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/ES75E2500805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb07a1037f9e2cd9c5c8f5454b979a7c5073716129d9ec4581af6d2fb9cfc687. 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/ES75E2500895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c6397b44606aa3d873b6e5f7650ea4ca3bd3fd34064173184c527342af7558. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/ES75E2500896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f64a1d11bb2eaf549966d5442ec58852d054ee5ac579ab578285b0402f999f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:13:23Z), 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/ES75E2500897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54ba68030adae77eca71abe5a2ce40a979063395e0344722f161f307c5ece7c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:45:05Z), 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/ES75E2500898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0397f29b75dda9cd7e6ebd396c82546422e437dab319f5c0930ca08825060c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ES75E2500899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0e9f49e564019779e3bccc6624e7f0ab6d620547cb3bdd6925204c827041e3. 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/ES75E2500900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0834e4df405a6b61fb7fedc93a6337e2b41fc39ba2ceff848a5559b315fdcca1. 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/ES75E2500901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50188b2800b737d3178e99a16f07f0aa8f41cf83af97588ce1d319016edb0c98. 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/ES75E2500902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c2f18d1370960b678650a36fe84f49716317b0f8eea9d2d6d72b91827f125d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ES75E2500903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6404cbca1abdfc2e50c71f04fceceb5a4df4a46da5f665687313fb608d38cbc. 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/TCAJG2508503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f820e0d3034fe9d3885215f1ac764801709cc38917e7668aee38e31d4d34996. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAJG2568868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba220dd21b24985300fb3d68d134e602cee6a609840309fe67134266e4a1c78. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAJG2569088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d2c1af80a06aed14e4bd5fdd6b8b4158abec54848e214f8ec24b17f95abf6d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJG2568892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79f16caac320da1e9775e925948756f11b77724e1c420aa8b346287f4e86dad. 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/TCAJG2569051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec604a176789a8ceb79cd4bf2d42aa2c4b8f022b009f3aee3749aa7fb30cef38. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAJH2510308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb3c1f7b93c22d4cf5fc36d214b8286c22583ab5c9503b41e47fa642aca1b65. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:35Z), 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/TCAJI2510343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce0faba5aa08a7ce17d16a1c3814b076aa4fb4b630317e0e735f619ea6bd669. 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/TCAJH2510378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe988f00830b2f5a205c9783d3d8c0daea32158f291a56333432d51516e7c7cf9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:50:09Z), 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/TCAJH2576968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ea9f9a9b489bd3bd6fd29a370f51d9971347fa41876b05440083af048429b2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAJI2577053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935abe9bb1c1ce5af511d1c22e1c3625befd608d5e3d404b1b795e4f0f981e88. 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/TCAJH2576902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00e307ffaba785cb9684358a808aa94cf5b07b5e1757b80c18b33eb03f8c10c. 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/TCAJH2576738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326ab8b3c25b530f7afe0f3ffd27fdf915ddb3fa1875b3ed441a442f8c01b163. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/TCAJH2576867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1280d82afe366a147466134e2988540d7f73f2bdd083157e97c6e9439fb56c7d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TCAJH2577111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6766d543480ddf52c8d9de0a2d4ed311061ca42d85ec2cedcbfc7db27a44524. 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/TCAJH2577086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837211891ea4c4dcf1795b8987dd8d3a3f52a48aeb67eca431d2b301623bb7af. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAJI2577007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eca882a296d35ba9acd5bf53dd4f545229514234593dd587e741daf99ae12de. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:02Z), 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/TCAJI2576932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45c8e2544318074c0ace803777482c580e9c6728b1b8bccf3527f25d9c1ac40. 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/TCAJH2576770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8092e14623d516abde8327689bb86743cd5469e21c626fb78ddfa24a54bd29a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:02:57Z), 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/TCAJH2577134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85de030a153f618198b5828e985aec5562014ae7d7b78a06e10201b8e7b2015c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:27:58Z), 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/TCAJI2514561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801e82d090fdb4b30669e3b52e3a5ba5bb035bc1a4de8f304e5d2ad8d77736b0. 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/TCAJJ2514595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a58634a2449a8b49ebc8f030a6854f9cf50ee67e5059148134d5beb00adb122. 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/TCAJI2514642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599d096de9ba5fa713bb7d52dfaa20760cf439749c9e7c6252498f49f3825d74. 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/TCAJI2514616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83291b78a8cd06cf24fe1e11ecedf7d1490432e21de23efcf6dbe0e3165ff50c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:51:37Z), 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/TCAJI2514580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ca8daa304f5ca7c2692c9188c8d408487a420269798ea9d6ccaee30a08f7d6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAJI2514655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf524e77da0b8139f42450426c26945fc109173c698cc8059ecbee8f62d3a755. 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/TCAJJ2535003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05994bfcc3efa13eef2a6f2301abe1e2f12eb9854c60c142d28827906e1c9dea. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:54:55Z), 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/TCAJI2535254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9464468f8687dda22550ab13863a80edd39995a4313cc2f42ca7b340b7eb5bea. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJJ2535219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183be7dde9bc2f3d4c4f6bc452d3e95e92c50eaadd4ea7ab156bdadf681c7612. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:08:31Z), 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/TCAJI2535178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabb3c4ca081e60f46d439e56b30d8625234775022f8f2de9d2e451aeed3310a. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAJI2535120.