1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x156bb1f3bda85e5281382fa4b26771e6b99454579eba33b9009ab238c0c75d59. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bac2742a-0012-4299-ba07-b154f04a98cd.json and https://artists.proofprofile.net/proofs/artist/bac2742a-0012-4299-ba07-b154f04a98cd.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 → block OTSBitcoinBlock must exist at that height 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 0xf66428077b9063a1e7667d27c840b4bdb9bd78b3f4334a6cfe67f9c5ddaf0c9f. 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/DEZC62250204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855ad2f79200032a209949ae69f654c709552e31886d81bc996834ad0966339f. 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/DEZC62250206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef6dc7825723cba062477eda6f2caf1d99f16b3fc3e5cd25ce07307e28e78ca. 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/DEZC62250207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee90fe6adafbf194ac832baa6702c07f1c9dd0e950c4d365520ec68ee90e8f2. 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/DEZC62250208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb607ee9b5f13717642f650487e5490d77ef17448003ac362533176900e21cad4. 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/DEZC62250209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39784d631c3894cbb94e69067dbc7a914bd12bbe8911cb52b2bc92427330eca. 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/DEZC62250210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce90a9d45352808cbdaf879ad551cf85f9368319bf6243b7fee5910aae88787c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZC62250211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ad94413724fefc17f4dc38ff5fbb06809f875a6ea6ef85fc368b2c0954ce13. 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/DEZC62250212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bc5e7795404ca946fbc40bcee38875065f050aa86000de72b1c76021f49acd. 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/DEZC62250213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf5813b92fa1e776d507c3e0235ddd4fb327989fa650d1bea6ca5d1513e9c6c. 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/DEZC62250214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4f23ea5500f5d1e892504d122903140e4f36c5618059b8542c379249ceba54. 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/DEZC62250215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c39b72056af525ad6cb9bc97783744f404bf9e726148fc1d826e9833f93498c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZC62250216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a20a44c6ef61d17070274baeaf2ef2db67fcf99673d9887565b2bec78daa5fa. 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/DELJ82088870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8694c388d04a91a1b4ff98130ae056ecbf583857ce7931bc551e6206e821a1. 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/DELJ82088871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6c85c44c1034f5f738de8080c633b0f7d10fcc56079e073839fcee2196bfac. 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/DELJ82088872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f0730d33228b85f69a80edfc53f5f64601a42642f1b0036cffb91fe6d53c73. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DELJ82088877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5271bfd4bcc0a14f34ed5930e93d5a5159baa96d40214a4db69f655af9852ec. 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/DELJ82088878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5651104f6d45c2f3bb74a9da6bcf3e838337ba02e6c51ddcec79128d8071ad. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ021804025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb6bf950fd499d5ba8a5d3791bb20035c1daa56dc5563420ce6c37dc0d81059. 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/DEQ021804026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0376de5d0393791fb27a748428e1e87237449d81ee5a49b09da993c772cce3a0. 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/DEQ021804027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81af5f8874de0871fd662360a8023f0c92f5c8e42e8f01639122966515be3b6. 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/DEQ021804028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23da83823aa398ecc54c10d92bb3f9ac768a43d01fc273b2bba85dc1a33de77. 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/DEQ021804029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c0bf08676b9cc676eb5d6d425f7b0acbad16f3e5b4a7efb311d08da78f1d0e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ021804030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ab025bfe63873b0f32ff23bdb4f2150945ba344eae6d5006eb98c084e09d79. 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/DEQ021804031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0b13748c8484af9ac4c2a5644e34af062d14b4ed73f2a2464dd0659794b77a. 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/DEQ021804032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02918ea0ab4c402c6e1c8346d458e473ea1f083c236be3a037e0d650289e1261. 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/DEQ021804033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffc030e0ca10839d0fdacf4503720c64e2ee7f684f96490af0ff74f832f5b18. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEQ021804034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1516d0136131443e6fd0395c7fda3ba040cf89f69f78eeadf53617f36dc1bc4. 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/DEQ021804035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac9c962e34c6033b959c38631b88cf345d20ce810f8d397b5a210e9b70ea950. 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/DEQ021804036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb552c606c366a455e0d5d4c4e3b95df254a68cd0f23ec1c48e696690a54f598. 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/DELJ81805102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a87b27bfbc5a7e7199419022b11bbe56029024091ca0a837a62c6a3df04cd6f. 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/DELJ81805105.
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