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 0x1ce9d1b3dbb78101259789e11845a5382e8089c0897babb021b2357434ea3c66. 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/6202dbc3-12cd-44a8-94eb-2c0ae1f704b1.json and https://artists.proofprofile.net/proofs/artist/6202dbc3-12cd-44a8-94eb-2c0ae1f704b1.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 0x102662a399eb598afd3ff1bb696de323702d7e19f1c06fd6288a2166fadd4645. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:22:43Z), 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/USQY51544215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf69d4e565aef6ac0a6d2188843c14fda766c1f440c09cb1953c79a262e93472. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USA2P1613926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a84419fd433cc8c38229c1d75f94e9008ffe3c19eed0074732ee3a018a841d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZW9M2311246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20251da4263053bdc29e971e8c65c697a9373fc75f0306cb8213d431abdc65d7. 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/USA2P1613930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae642412a9db1e9245212c1414a4ef8cc3945ed4bc7fe4249b59884d3dadca8. 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/US7VG1860768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262ce644e6f9dbc4e389ee720b54a6fd68fe4722058f561795cabc002a6f00c2. 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/US7VG1860769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe581fff618abc8d0101c0afe1ad58829549b9a33a9624911da1737f2799c1f2. 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/US7VG1860770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0eafd6b7f426414e84bbacb17de0c93df9c8186f5a99600d739bdba186384f. 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/US7VG1860771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045ad7676319e3b577272b70e710f848e83f6430891ac6f2af6091cca530e75d. 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/US7VG1860772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354b817afc992be7fe54a9486056f0668c3ca4c822c9ba90e1040fe297b9946d. 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/US7VG1860773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6478625ef753ec22dd229628ccadd2ddda783a6bd88d3cbcfb7acd31726cf4ce. 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/US7VG1860774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e9949f60f62a4ed04b83c295e7f2396603860c73dce2d4d393c34b2e68d811. 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/US7VG1860775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010c62185d4b9624e04080d151ac078047e3cb0e1e716d2a759ae8d7440cb800. 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/US7VG1860776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb621e3ecef27cc5b8adee5d888cd62ce6e4a74b1131b32461e4157cf2dfb7041. 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/US7VG1860745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1fc0276143b5cc3b0cf081b141f11ec0eb06b20617911fa262acd4226e5b58. 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/US7VG1860746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5dfe50ecd4314e39457ada2237663b4220e8cdbaf7f4c5baad50b09e9b62fe. 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/US7VG1860747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4942f01aeada46e2af806ef28512adaa2517ee0aba9805052a14d85d3b8bf7ad. 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/US7VG1860748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a6e85d4aca16aa3685e7a61c45fd8098185c11c0a4574f8d73ee9b04018554. 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/US7VG1860749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5444e2ab2f6c42b30394d3cb5d4027caddd184a07be692611242dfb5105c9a. 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/US7VG1860750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb425f4312d1cb4d09dad91fd522ddf4511977afdb78d1338c176feb3ad2c054b. 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/US7VG1860751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d73adfcd3229800d49492cf1bd1961ffccabcc06f967e115e3b7fc4cf1e695. 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/QZW9M2311245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a84419fd433cc8c38229c1d75f94e9008ffe3c19eed0074732ee3a018a841d. 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/QZW9M2311246.