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 0xcda495a3e7e1fae3d3b1216a3911e1d30de921f5792d806195f53eda986f6dd7. 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/98a118f1-f3bb-49f5-a0d1-89588268ebf3.json and https://artists.proofprofile.net/proofs/artist/98a118f1-f3bb-49f5-a0d1-89588268ebf3.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 0xb2945fa914078d312ff6e2ea6025f78836d26457ca8a2b12b72b8d8c30ad47a8. 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/AEA2L2365317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392fb44515db586c49c1b83c3df0962e952de2cd072c6f87e9c76a2f3031c546. 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/ES75E2414940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2366350ccf36a48c3c428fd0a021972a9fb4362d79b97ac1b3085a8d29228e. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/ES75E2500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f8966ca2349ba17e361635c8eed8df9e373c82df3bd61f9b4bbf3be9bb35af. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ES75E2500267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15faae2f718eba268944829213e4d9acdb2aff49d83a2ca53c0d9ed3730f5f1a. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:57:27Z), 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/ES75E2500268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2be9aa09805f03a4db30e0900a51f3c8f896494b6ac5c80c6b550053e57d7d. 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/ES75E2500424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb469aa03ce046f30fc6c5c19aec7a459eafa21687dd5d03f96c8b018a2149fda. 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/ES75E2500425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9f8547b4dad5c7dded505fbae35a4509be06de70e2a457338209b408d6d4c2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES75E2500426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6616915118e6dc6d6abf0f393466503fc9f16785f8259c4cda6f34b9f75e42. 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/ES75E2500649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48357a0430133afb87b3ad8f0599d3720e6dbd97beec9c229183ddca9b88d589. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ES75E2500651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57d3ec6e53a5c04341e2776f6ece9ba6107d019fb6f94f90da3fc296584f31e. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/TCAJG2508151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cccf479b33f05b8d94f01bba6cd2e1ba76664390844f0838445f82be12755e. 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/TCAJG2569925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a7f45faff470d58c0556c07966399cfe38e6b357263e408449a7fe8bb32086. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:28:45Z), 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/TCAJG2569993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f39db8d6efcfda4c12e114bea86249c7d91a6aa57edf99cf683ccacad8fad7. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TCAJG2569876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250b748b32e910032db1122ca470ee3d8ac6893db22c9cfa4d9903993fea1635. 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/TCAJG2570053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cc2f0ada0eb8a97fd193137ad2f0da098191a6ebbc0af4f528262a11b0bfb4. 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/TCAJG2570013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b7c6648ffaf4f32c279af0c24a8480ee1555ab3a1d632deef96fee7ad64a56. 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/TCAJG2569965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0085a9b4a011fbd81ab1ac830fdfaecb8a097591ce274e497c72f6032bf95255. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:25:45Z), 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/TCAJH2510425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a921fb4574964b623d023954a3a602d23a53437403859acccf7eb9514e92c9. 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/TCAJH2510461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf856dbdee69720853a95d3763f23dcab80eaae0e76747057cb2c817991e768. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJH2510489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a877d3fdca78233cd1ac1fa0f4391f40e4f79498d0d6a42bffbbb51c93a17d9. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAJH2577765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093d559a365f40ce16b314fe1c81490bbad555ede210947d565a22254b66c487. 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/TCAJH2577705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d19262f9f41596476082482775bee8ddf339b09fda93195267953fda6a24e3. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:42:34Z), 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/TCAJH2577792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cebc17ef7f8542be6d35bc5774f47b20c58be509d2542c3a52b14eff3b43095. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:00Z), 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/TCAJH2577982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccaad368ce8912678c5e575ec9a5dcec96df06f7ce587474df1366ad8608b2d8. 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/TCAJH2577904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e3da84e892781f36ccda7a2c03e96c0e19ae7e0fd10504dfe20b0384409e90. 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/TCAJH2577871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e71db8bf7bdc2906dbaa6b52672cd0be8933b3f93c840c18013c37169415e1b. 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/TCAJH2577736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c838643d323f4ba7b8f58719e12f2adb182cb03523c212221f293acf3f5567. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCAJH2577843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc89a2da9fb1157465b2063916c5e150f66972772a3021efd6aa80a08d9d1664. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:51:03Z), 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/TCAJH2577657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb704a06103e7bc57bc83d380a9db4436a0de6fdc37065240c963140a3fcc00ae. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:38:06Z), 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/TCAJH2578022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2663ff7c8e95f9e29b73132c6095dbd0979e04d33bc4da4e92ebd7015c280dc2. 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/TCAJI2507985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbeb7720076c3234d93589d8b1a7b6d4bc0cb31b90eded52e0996aca919dcd5. 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/TCAJI2507951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e38711e6fa9f2daf70426f51b4a49ca61e3ff627baa87c1a7ee8003db97d2af. 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/TCAJI2507922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98f10e11289f2f3b52c978b9ca6dc62748ee352f28e6eda70b24921c3b312d1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:00:23Z), 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/TCAJJ2507969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02d8c46d30780c9bd44f103127815f542eb1d98e740fe0b58a27147f3589eeb. 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/TCAJI2508007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a36acbf219e5ef975d2aa51c4b01096e51dd8c7cf801b9ab0d1383f1657982e. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAJI2534740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fac8f7c58e28f78b895ec9fe453a1454d5dfc17b3b191bbbb68450e59501754. 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/TCAJI2534654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60e7becdc126e4880c226f5a0a1ec16d35b6799fce1dcb799a30bd5ac28c66b. 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/TCAJI2534761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880b39933a9de77e2026667d408c62cfb4af76d66853614ef65f87241642dacc. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:32:15Z), 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/TCAJI2534687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c6b5d198de9b06a584e9bc88b5bba01aa4509efbd005e1a4a9ff14f8c5ab19. 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/TCAJI2534709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eae3201d30017b19adb5254377e25053cd8885c7dead573971ad9b1598848b2. 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/TCAJI2534626.