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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369a71d6bb870c31f3984f9fe3209b17caba847a15f8ff4e0dca9ecbd3d96941. 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/65bbbf33-d79a-47e5-b248-c52fc2cea2ee.json and https://artists.proofprofile.net/proofs/artist/65bbbf33-d79a-47e5-b248-c52fc2cea2ee.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a52a020b9a2bce238b67e4d9849c97b2f7d1a2bddd853b8bdf7c19ec30be67f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZNC62212237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bc09752f4b18a9a810b4b6a839e3009e7988b4f839b0e15f3d2aecea2f27f9. 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/QZNC62212235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faeec93d3a5c780aa6a2cd63b3c4527086839351f382c0a4d7346efa5b34e79. 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/QZNC62212236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45addcb9c6b2f6472b83c77f5148900f422c81b116d127401da2e80c2d8dd714. 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/QZNC62212238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ecbe494588defe609fdcb18d79c212a8eae018f60976ec86c33c4a74ef975b. 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/QZNC62212239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8759c89f58de86b9bceb837bb17e6e733bcf7efc30951b5f653e0cbcaa757c6. 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/QZNC62212328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025951f5b3f22ae80e8dd1cef6911306178d8162ba178b0a1fb40c3bb59bf8aa. 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/QZNC62212330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506a2a5e5973f986ce49cab6999994d2070a66b9aa6bac9a8501505bbce5ab4b. 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/QZNC62212329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa2093cc836eab4a7bf241b49c72825874e860afbcf55bee06509e766cdaa46. 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/QZNC62212331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb104be07e494e50d243377a3c24f66886fc60a06fb113ae777cefc17652f43df. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZNC62210876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7defaae8b2afcfcb00c6bd0833641aac2aefbfbafe5974d0986cb6276da941c. 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/QZNC62210877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a87ce1b30ab01295723668755f1b00ad98a13bdce65994b4a626245c873b9c. 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/QZNC62210874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f949ee314bfeeac135ef68f424bcaae65cdba11b320bce03560593c8d4ea65d. 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/QZNC62210875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa575044cd4e139cb4672aedd796f03212874e71b1a1d7e5d13b5028fbadaf0. 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/QZNC62210872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f268a960cd1e833686f21043bd61164219ad23bbbcd50c13cda56881d7066e. 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/QZNC62210891.
Na Edum / Somto Chineke / Ndum / Onye Dika Gi / Anyi no na Aghiagha / Na Obe Gi (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b9bc59fa811e9e3b4784fa181560d1237ef4906b850b73b60a488f618eee90. 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/GBSMU8572915.
Halleluya / Ubochi Ikpe / Na Ebube Olile / Anya Ulom / Were Mara Nkaa / Jehova Bu Eze (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64726a25a8ddf03086e0457d45fdcd51057514dd71578542b5141a32d91ca5e7. 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/GBSMU8572966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc994eeeb645c9d77a906a21f2729604a67beff24f1319e7f42c47f55edbd4776. 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/GBSMU8573197.
Onye Nke n'anogide / Chee Uche / Ebere Nke Chineke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac8173f7de6d7949963c60afac63992dc4105085fd1ff431cdf3517f129ad98. 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/GBSMU8573199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee63d72554d0a659f128997f3c3ccf4744999a6d4644ff0ba8c028cf48538ab. 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/GBSMU8573203.
Omajuwo Obi nkaa / No Condemnation / Anom n'apiti / Mee ngwa / Jerusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48309986f1f8802f04c6eef16532ffca71b0af1f9353277929a5beca86e1db19. 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/GBSMU8573213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74d8c63ef3080eb150688d5eddff013c1d5c6509bc5a8427b1e9f594c3b3540. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBSMU8573216.
Great Day Medley I: A great day / Cleansing Power / Be Glorified / Come Along / I am what I am / Authority
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2556e1b2856f69ee136a44c40f4a8f90202a32face20b567ee726ed031309ec0. 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/GBSMU8576597.
Great Day Medley II: He is a Great God / I Sing / Hold on to your Faith / In your Presence / Father we adore You / Wedding Day / Adonai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5d942c40ee1412f9b0c098db31ff2bb727c8f201b1cb905eca95c113f73937. 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/GBSMU8576607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a4bcfa8b51aa4f28982c57d5cb7cf5a46f1688661bfb45e0be1455b0cc4721. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:03:36Z), 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/GBSMU1677692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcade7d3590af4aa96f48b8b1ce09efc3e8285dba0f3b80903faf0905483b1dca. 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/GBSMU1677693.