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 0x2d6a53a96ec506f842ee3e128cb329bafaa83e392d99fb14f0de9514f7d216c3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ee7b2e9-cf86-49f6-b9ae-7cf8c622f72f.json and https://artists.proofprofile.net/proofs/artist/9ee7b2e9-cf86-49f6-b9ae-7cf8c622f72f.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 0x7cb9d1d324eb9b68da3b9156e6e9330893434d850a932cf977fd13953ab87f25. 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/QZK6P2509152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb95cc36ad04cb76e904eb9d9648c2ab6ca7eb3761ef532b7a1b9713099bb41. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZK6P2509153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf838601bba85c3b8712671007301b89dc64f4af8de6821599a9f34424ed78f. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZK6P2509154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f97b7bd47e8111744e854c0c0f1a357cb2df738d585a3626cade50a54f5302. 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/QZK6P2509155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db496d6b2aac7ac60cff1a3597890f4439aae2c46a180edb2bc5bafb953b143. 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/QZK6P2509156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04cb3fc2dbe6d978a14f0169b5efad9b16ed357566d4912a7decd516f80e8de. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:01:06Z), 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/QZK6P2509157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee8eb9d3f29460e3b6663486ae5bb92edcd869bc70d6e0e46e950408ad36b7c. 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/QZK6P2509158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4d6d43e193de31833b34d4cd5b4828c4805a0454188a1c08d6e5b6f45ea2e1. 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/QZK6P2509159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacb52b898520b12ad9abb05c0ab8819bceb2d1b2dec9b57f81afce269899f9b. 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/QZK6P2509160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2368651fbb8dfaf65872968c3a36e88f0cbccfe855bef416d31620e02b12ceb. 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/QZK6P2509161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447208907d752bda17712241bd81549313a669ddd8f7e52ebbea0eae3950e8b7. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZK6P2509162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efac88c99c3235ed6e378e3eca278c4d21e9ceb345e4577c19731f2ff0593f5. 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/QZK6P2509163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d43a45f81bf19c448d653c77b3b416d6e2127d58cd5c5f0096849cb7b5937d. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZK6P2509164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa20ae5b7a0c27fa8f236c347da3dbce1d2e51341a4308bd734af3f88dae1c0. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:49:05Z), 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/QZK6P2509165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e98f1d4f81378a18d00bb2b9deb502a552240118b16b204b9ce647e6d51cee3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZK6P2509166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70296052396100e589199b9d9bb7c2af6fe8b32779a888079f8301e47c322527. 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/QZK6P2509167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b6321fece8069fbb4da5fed8ce5a17460c787dd6e15dbb48a6c16c3f862865. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:33:20Z), 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/QZK6P2509168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceb5f16bb0d3fe9b172492c925c6c5e323871680f514690845f3cc797936068. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZK6P2509169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c4fedfa43617e8f30b7901ca9caef69102231769635c5016f0770fb18ceb41. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QZK6P2509170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d41fe65b2ff16da4b159c80ee62bfde73740ad370214fdaef9bb52ff35641d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:35:28Z), 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/QZK6P2509171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d82fa52962a2aaed7962941a95f667e9c3ec7517898a0d00576044fa406907a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZK6P2579552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e97e199efe0950b9819806d5d20661e6eab0cd12afb4c8ece5def13b24a1be. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZK6P2579553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fd6080a74385759fb09fd04ad4b6402584a0e2c89c8f978e7e315bfa16360f. 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/QZK6P2579554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6921ae0ef7e74e5025e0e23a158738f66ed894f95fe5fc06102de78488bcb1e6. 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/QZK6P2579555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c25e1d2b78e248c5d30a4fc79e49a3cbc42a4e3aae62d3d1d4a6f7f66833ef9. 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/QZK6P2579556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685544231bd8c91e2b0c2a04022545f4b04e51bfcf9c5f289dc23557a14ad5b7. 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/QZK6P2579557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3d92cc732f3dc8e2a5300cd85bcce34c9d699425e214565b0ddf4a0a21eb28. 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/QZK6P2579558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027923ff7c7ed2cc4acf0b9f164055783640b6874263bf4973164eb24392acff. 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/QZK6P2579559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934b9fd2c4e10a86064b52d31209498fcdda36aa42ed995f2170ec8d2aeefc08. 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/QZK6P2579560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955ae893f164a61a27a79492894b8bab7cdaac5df996176fe249b9591d8d9a45. 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/QZK6P2579561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd1436d2c27f9ec37df32586270217ade133f7bf0edb452f9ec418bc94862cd. 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/QZK6P2579562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa714a48153c506b5e1c5972a51097b7b47f31a96f3e8401bffb97ba35dfa022c. 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/QZK6P2579563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848ef9f18320bdb80f8dc3bee4f5764aece0175d9e5ee30efab9e98443700037. 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/QZK6P2579564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa616c644da6236d97b7706f8930cdabf076478dd7399858b6153eb62e5235739. 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/QZK6P2579565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb2a05cc14f4ab2d378700929e41c5e854c942e54aa563d43d8b3257f4b1536. 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/QZK6P2579566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc3e3191a3269b9d05943bd9bce9ccfcda971a89ed9c67cf5ecbb97dd1beded. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZK6P2579567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50046109cfe1a334e5d52ba661b240fbd850067623705752f5962969e877d1d5. 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/QZK6P2579568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e930efb86e99bd31b038bbee6e1cd108c84d065788bfc8b1bebc6de0081a29. 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/QZK6P2579569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7850d9408fc5a359324b5b70a94f54e5a56b861e7c17b29c2ae0edad377f9b0b. 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/QZK6P2579570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e06bf3fcbe4ddf777f3b51c850b1a3420867524d61f70048b0fe88a2e641a0. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZK6P2579571.