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 0xe34b3dadad60e69c5df67e42799152c98a482fe8b6fda8fcacc5a1624405cad5. 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/444ffdf1-5857-4d8c-bc94-5857e6004306.json and https://artists.proofprofile.net/proofs/artist/444ffdf1-5857-4d8c-bc94-5857e6004306.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 0x2ebf82f4f2e9bb8f46ef55fe8b0270f89b28e060cf523c1487bfbfd272845887. 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/ING212473220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb966ea7912c2f65909288b71f219658e510e3f9ca3471350d1cfd907d5d89e37. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FRX872125642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34318fc67f95bc8e81a1612b1aa75718c544da487880ef7c91b12426d66cbde. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FRX872125644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3436f6732d5de251d1d6861369e6f71d57455c09146b101a4e9f252bbb0dc2. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ING212473250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365aa07527850b5b6da9eba21957fe0f7d51bc40290a6c8013d5752e0d4c21fa. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:42:41Z), 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/ING212473251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e14fe07962bc3ba851191dd8b2a81aaadab53917d47c022f47db732a4059f7. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/ING212473252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b32290e2140f667b963006481e55d437d223a8c59d64c487d5f43bf8fafc5e. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/ING212473253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02de6b7702a7b4a5879b0df9bdd538fd49a5276e65385f656111b617e3ff03f0. 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/ING212473254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea338a7802deab916a654068788ab8c39589a78f51d0f3cde587fa578db0004. 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/AEA149200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb760bafae30c9a7cfc30f6649680a2d58336a5e8f5203c410e4ffd83d32c08e9. 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/AEA140500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f5c7d55387372182895e54f8d6f13e6c62078b06cc1d27d79bf1e18c252de2. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/AEA140500268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a894bbf4a898c83a3d575a083dd5c2e8373b1bcf3102284a917a2801f37d0a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:36Z), 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/AEA140500271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9836144b419c8f2a933f5f9d400378eaf39ab07f92af6344afc0a96ceddc57c4. 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/ING212473297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135c3f1dcd11d3319742f9c923eb20c12e86614390e9a5e0e0c54a3c1f484c42. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/LBA081010409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa978a873cfb996a3e453c7c8b9998df22449b84e8b4a16d6b592aa7e7ad862dc. 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/LBA081010410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0d2a5e65a3d1e28cab2110f7a62465487af75842591595ef1ba0296136fb3d. 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/LBA081010412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ec8281cf26886fec3ac56e08306ffe05d9a912b97afe89ce48397019a7550d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AEA149500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991f299eb07367185619c42c068e109ccdf454e4e692949a11c59b205595e2cc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:14:47Z), 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/AEA149500124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705d3f9c797d1da14d4969d417bbc5c66d432526f77be98383bc1679f3d73246. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/AEA149700099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5906f8d050d200f467973c9366c0d4f51451be16d32aae4143e9681a2f3081e3. 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/AEA149700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9731b4f1ea6bd86c455d3452a752cc42b5547295069f4b6273df7c81e28f4e94. 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/AEA149701487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fe93272b77108345f0b1232f744878d3ac612a052a6252e620b1184597d7ec. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/AEA149701498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893a50f7678fe0e44f71bf8c41337d786c9b8270f2c2dd7d72760cd06f2ddd91. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/AEA149701501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f6046a814b576e2e5de4094cd66355133fde121354e6319480692aec103673. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/AEA140500249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc588520974b5c7ca17d015aba421bdf249a2ef72d884afd1f60392a4124615. 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/AEA140500235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0789b1c21188ef281e33a8bc84887495694e13063366fc795d2cabe628e0b001. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/AEA140500239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3879e71ab15f0b52463413ce57434227c49b35aea96789a46799df9bfbc4356d. 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/VGA010813359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398fa9e9eb3d88c0db318c65f1a6784cac041afb104486a86855bcc917036c8e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/VGA010813364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d88c5abf408f3b8fb408bcef43ded921a185459f7f7bf47f0f0da57e0f6c071. 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/VGA010813366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4f8ca587cb9bac3483c385ba0f06068c51012b6a2b5a4a87fcbe5c96645c20. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/VGA010813367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c17b8679a445f820b3b08c1c7e6c573a545b5ae9878a840e1e08c4be537075. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:46:36Z), 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/VGA010813369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54d7cd257b94f4c9d8e97f5c657125ee8ad2873e14187f6001381378dbd06f9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:47:36Z), 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/VGA010813430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd169240f9a866c798d0165a67c3f896c0fa8321953cab9ce1a4e2a4c2b2ea9c7. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/VGA010813432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f415c5af8d40d17c6067a9ff3684ce204bfe08612a7be4b40b654019726e9d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:32:35Z), 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/AEA141100561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd8f5c50d3327ec15dc743d280529e5fdb30da4a10f47267efc4eb0f1734e98. 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/LBA082310125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d4801d45298cdef19f5bc376a9f4f8d33996ad491d8910583eb154014f7ff0. 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/LBA082400979.