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 0xe972c96cadda9324d096e4137d0581fbd1cf4c599f5a5c516e3dfda8cfc77ba0. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d368931f-ce65-4b8b-aba2-ff08c3c0ca02.json and https://artists.proofprofile.net/proofs/artist/d368931f-ce65-4b8b-aba2-ff08c3c0ca02.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 0x521e25e87ad4d65971d4dc06b0bbafb1cb8e51da0c584fe45c7cb4214650b770. 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/CAHQJ2598693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f79939c296b67376ad02dd06124a5e1692feb396340c52e20bbf33fd7f1825. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CACWV2512716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2b39bc0ac4a724b0fea9bb5a33ad0335cee8ee48d62797cb019fc943a0146a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CACWV2543634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd877d680582a1dcb1403abb3f738a5bd2746715bec5017adfab1a88650fa93fb. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T17:01:24Z), 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/CACWV2552678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf26ab2e99ede45aacd86d6417f28290d6307c55e67ffc9b7dd20b9e910af0a. 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/CACWV2562079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb704ecd9ab3e965f58e953c78273298fb1715a3a8593f1c056d6634bd8c6e851. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:41:01Z), 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/CACWV2587420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3567a76914de44b79793717d61b06c46ddfee7ae770f4a9230c2abeb3cb1d893. 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/CACWV2599595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8964529c5ddc66d7e6b3b44976e517cc4cc8890e171b1643afcdf92f3e636b24. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/CAENV2504237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6469ae51b41e227834ed5d679863edaa9f8e4c96d6bb9d0a68f8778df8913c9c. 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/CAENV2522202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73c40232d6c45635b1dcde07c27cf41b4c3057ad664d6c75a492d3e47e028ca. 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/CAENV2535800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1645354088db1365906a0dcaa5d412ccd8e7eddaabe2e790c959f7737a73370. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CAENV2544059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93112deb4f8816238683de29b72648d9c0400cb9ab6edc8c194eaa6681f5fe0. 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/CAENV2549425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079cf74563d47d6f2b6d859895ca5f8a76e00498dd2dd68ae0be0275baffafa2. 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/CAENV2552858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae599a8c24996e0c79a915d2e135cb69e95c3813c7a54d1dd8931819c030b75. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:08:42Z), 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/CAENV2573172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2afc47a841e990df26b183aad2bb2ada7066ccdb472c3c8f26c574d6896cad. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:16:14Z), 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/CAENV2592153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb70921c660586525ef662c33e331370d72112a4f00745e076843c717b9ff598. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/CAGOO2530975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4909495242dba7b1a1e0e27bca31a49defb777079aab28026e66f22cbd390a4e. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/CAGOO2540730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3e4da747bf02394f9d29e0574d873c1fa12f2079e8ab7fb9dd80df0c92ca9b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T17:32:08Z), 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/CAGOO2582257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f233fe6a42d868870eb716eca0ea5b03551f3cf28b56ff9bc06e3fd440bb537. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/CAGOO2589165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb46bc40077cf5941b7bdce52bc054d028922e6876b96e6ae0152d920c256102. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CALVP2537179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a0c4a7720593ad3edcdc222f6acda1a3fce205237a3c918b50d66a8d8553c6. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:12:07Z), 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/CALVP2599173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb75f3622e7ae4ce7bfdda95b703087aff1006cdfb331b3c1c5774af004bc17. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:21:43Z), 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/CBEYJ2540713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cad3fdcf59e48ec571b3aef35034af78b78f6070906f7045ca81f3309b59dcc. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/CBEYJ2523445.