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 0x3032251521b45f2c4294b95b7e722619b757e938c0690c3252c427a75c122cf2. 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/1f5394e2-23ef-4b71-bccc-a1a1ab260367.json and https://artists.proofprofile.net/proofs/artist/1f5394e2-23ef-4b71-bccc-a1a1ab260367.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 0x1c64be2f39ea7646c061df9f859d8db2cc5d3e5e29ecf9d40560cc594e2757dd. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:03:07Z), 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/USUM71102476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095b04e6a2c2f1ccc050b04dcc621d3ff572852819021f8158653531a1e4037d. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/USUM71102483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ecb760ff38bf78129bdca911122222e2c224a80404175e12c1225183a4e844. 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/TCAEZ2011194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c4993ffe59a1e28863bc33709efd150b82e46621e25383d9cb375cd28e79d8. 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/TCAFA2078184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879112cfdf4497c6eb5b8b0f84cc9842a0dc7b36e7813bbbba2aff5b8cc98eae. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAFA2078207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e489f6175f35c1fe316d21a04ab27d0fb59d63dcefeef99b1b1d80928de08b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:28:05Z), 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/TCAFB2090258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf090d44d6da6cef38d369d025bd7a8facbb4cea79af223dae9ee0999894bd2e6. 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/TCAFB2090381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b14249b0560d4b25fa0bd66fb0d5f7937bc6dd07c28ca63b0c7134c5439c60. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:04:51Z), 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/TCAFC2013653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948d752b5503ead2079ce6e10f8cc1d8d22829ea8a184db1d7fd7dfb3c244274. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCAFK2131931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d9feef843d9e7081050a987f96c15d4b2f3b5cfb5a23ba2d4a32536d73770c. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/TCAJD2591752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08acb7e90a9a50e736a16be5410323328563634b7c2e74371a4686d105795c7. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/TCAFN2186708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190d5c09253399d1cce7a041e6f8f8c75769e54d2a119b06efec0ceaac3ea8c0. 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/TCAFO2182234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d090e90b5a117df83dcf2407b02a0bc2c915bd4ddd38d144f60a5326df5a865. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:49:32Z), 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/TCAFR2152501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d930cfe6b9bb986ffddd71baf6306414364c9048f3999df291630fc1c587775. 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/TCAFR2156761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00714e6073412b4bcd9f240247290465c67f9cca7f9479c212978c38c4e90228. 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/TCAFS2172901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61c6a66129cb9b9c92a028aaf967eb2ea44ae5d2d22e7f1a33f32a1b9f82b8d. 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/TCAHM2379715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dcd4d5cb65faed39545de2c00ca1e4efdef5d5d18cdd57bd9906a4a97b7936. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/TCAHM2379821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb247ed957fb6a19f6d81964545141a6662fb9edb913a196a8d8a9e8e12decd38. 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/TCAHM2379834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc3c9351aec47a4d1e80c54e213c43de475fc928b04e86affc6f5d2d4eb38f5. 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/TCAHM2379853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe09f17403a03bfe3cbded7f1c18adf0d5cc5acb5d9c645fbb6eeaa6ad4297e8. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:42:15Z), 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/TCAHM2390973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec719188bb1d87147b911913790ea404b425fd6cbee9bf552866a17b6d27c91. 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/TCAHM2391006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5e0b0c021e132e1a16f1191565d0546add7adfbc4d4cc755276559b7580b8a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:47:27Z), 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/TCAIL2459405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765f701302becda564a44f57ebfbce04c8835fd46877911aee4062d7476e11de. 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/TCAIR2435734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0192e9fd1a21f1d51a20fe2a0aa92e670e19e297e907c517ee40ae7162da0b0f. 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/TCAJB2460702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3b7ac99df272a34c57be53924424626d85f7a5a16f061363114d816f0787fe. 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/TCAJD2435202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7448a902160b5e5f3d3adda293a2e756d3bdf2076aad8b9ea474c5b10e2f9908. 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/TCAJD2435137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf743a5e7aea114f0c295d81901265addbe5bea6a56845e0b67563c006fc1bd. 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/TCAJE2435164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edb1ed8afba125945d0837bed03e22433d0bf2b8040608765145576f1bad6ab. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJD2435143.