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 0xf73a65a007a6c01d027da56b7e19b43fd3a96a11a3f070ff15db561b771e8433. 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/840de381-d846-4cb1-9410-80ce7c31d870.json and https://artists.proofprofile.net/proofs/artist/840de381-d846-4cb1-9410-80ce7c31d870.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x6959d03ee3c69a66153690eec5c8d1e060640f50a643549e70d2461a7c89ad9d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPZ921411096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3904e1de9e8a68a9a13572b0511d6510508a99a3cd3fc5e5f0092cb2edef7582. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/JPZ921411098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe7fae2e14e52555a5fc1b7db17a6fed7d5d4b1b2cb27f7c24aeacb42972ce9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPZ921411103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e69ad4dfd028d22479004dab892f63d9e3cedb18d99917841f2862e9b6d91d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPZ921411105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8af88253a5c9e36df0c767088469c62e20e7c73990846e4c38cb8bdb7eaa104. 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/JPZ921411107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9791f225afcb2791fa04b2e3fedf2e59f82e8138e12bbff3be7202dc7b826ea5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPZ921411109.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d2a16996086e60a292105c1c7a45386f42f1877ef25145efdc959c5c0f8efd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPZ921411110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ec49aae5c49186ae0a32eaf287ccf3087fa6752e8e1991afc73ec74ca1abbb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPTO09310310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976556d9b7f716d7f2ea556e380481e37230796d975eea8e61cee59fcb744bf3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPTO09310350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e15bb9b71316ac03da7f66e6829776d5a5338f7ae5d051ca7580f9179b7c22. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPTO09310380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0111701f97ab9c60e1998175ce719004820c4a2acbafb23b00526c8a33cd20c9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPTO09418540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb79d68756a2e6bafd110994c7f1dd7002923b90214f18df1bf9fd98c8f6d09. 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/JPTO09428270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbfe451ced8701d9f540ea20cca836d1fe5b148ab5b3dfe0cb5e1ca86003ef2. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/JPTO09428290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0282987d121698ce3601d7d395e3f17094593879fce54419c52d2c0baae19b1. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPTO09515370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15015a5ebaa93976a6f0b439e2593645d4820d006a95ae56dd80926483ce5870. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPTO09515340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15015a5ebaa93976a6f0b439e2593645d4820d006a95ae56dd80926483ce5870. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPTO09515340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c838c7da6a319815d1a099d3108469c1449b7b886221decf3e96e4ffc7cc20. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPTO09515350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bf1b01c62e5303fcced4a456223e18a9dff30325bf83b59968e5677ac5b35b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPTO09515360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0282987d121698ce3601d7d395e3f17094593879fce54419c52d2c0baae19b1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPTO09515370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ba3eaea3faaa21d412acb4b9a5877e9a6501631b2d1fd9da3c1455ecb6932b. 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/JPTO09515390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a58537f8b1b8dfaa85549fad4b222eaf9d8e2c0fa42cb6f0f75a0e5b23ea0d9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPTO09515400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec48ee76e61435ff19109960ff848208ecb90e172ef53a15ff22cb83def4d02b. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/JPTO09515410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0111701f97ab9c60e1998175ce719004820c4a2acbafb23b00526c8a33cd20c9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPTO09418540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a11d452f54cc922dfe46365221c18da6ea8304951193f20e253f88078f135bd. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPTO09428240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1500a69dd572fab681b974fabee72b9f7138429800ed8479bbae1529374fbe2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPTO00801662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a6d6bbd5d7b5f9e4b5a631716976560f557b1465460285928336774297df9e. 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/JPTO09428250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2191e92025a1eb8614fdee213967a8573e73e4c8c4b49042e91166eef7416860. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPTO09428260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd008e7f99e0d9207d3f371a98695c8f621d064946e261974d0854c44ce2499dd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPTO09418550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb79d68756a2e6bafd110994c7f1dd7002923b90214f18df1bf9fd98c8f6d09. 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/JPTO09428270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e4928be4b2ecc17d7b8d3c12161190997651a4be674828686b62066bc0771a. 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/JPTO09428280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbfe451ced8701d9f540ea20cca836d1fe5b148ab5b3dfe0cb5e1ca86003ef2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPTO09428290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ec49aae5c49186ae0a32eaf287ccf3087fa6752e8e1991afc73ec74ca1abbb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPTO09310310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470b6ff6dce7473ec591d5bd13d346f7d1361f773d5cdb6404847cfffdc3dcfc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPTO09310320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976556d9b7f716d7f2ea556e380481e37230796d975eea8e61cee59fcb744bf3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPTO09310350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9677cb2782a4fc8d37129cb6a28ba6c8593d7608f6c95cb3f95138d7afd343. 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/JPTO09310360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324893e7d6e70ae07d2cfc197ab43f4732ab040bda894d1499531b9f2ff842ba. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPTO09310370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e15bb9b71316ac03da7f66e6829776d5a5338f7ae5d051ca7580f9179b7c22. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPTO09310380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04cb4aded2983e76eaf1c7a980437f641ae38a3397e5d28f0de94e828469074. 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/JPTO09310400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31aa696a981d88545221882dc316f86739578c4842b1f4fa4c1cf9e6e48627f5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPKI08898648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c111f260aa2169fe0a778212237b4343b55dfc1438fb0ccaa5cc636738e098. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPKI08898647.