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 0x83d0c5d64ec3326de9c07b3e6a7ecb56bb48807c0acc71e6365c2f9683ddff8b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8c3424a-9e06-4de5-927a-8c0ed4e5f4f7.json and https://artists.proofprofile.net/proofs/artist/c8c3424a-9e06-4de5-927a-8c0ed4e5f4f7.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 0x56a45568e66e6c7a1b746ab86751bf0fab9094e7c9dbf109ded0b1b3258beb91. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:23:07Z), 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/GMBA21464970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c96f48090f2fafeaa1da59522a15889689f3689a3ec0128bf9ee71529b3aa4. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/GBLFP1667940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c53326490863d133680f2d541a2ab372418238d08f34b9f9c1fb0a871d35bfd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBLFP1667941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05edfe7e4c94df96a604dca165be87e55920d8e7bed590256a663a588dae61f4. 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/GBLFP1667942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac0448050b958892b81bcd1fd8577ede513741d272a9eaefd932c842d7ffb3f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBLFP1667945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c875bf84a10b29c43971b38d6f646abea09e0d4a6440bb0b8404d6beabf62d. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/GBLFP1667949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926a7964095da84a0d71ab792f11e2e2c867c1bad572251ed361507b7947afec. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBLFP1799153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502358fef8713ee92162e2de4276c9842e51637e226334a43c02770bf394a3b4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:43Z), 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/GBLFP1799157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac5638fe6ab26aa403b6ce7b71f68ae7d4b2fc6a2f67a96caa51e5831fa899e. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/GBLFP1799150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f3e7d08f3c1af1ca85862c4839974a89ad3dbc5e719ff0f8a5b5e58850d686. 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/GBQLU1900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fe2af517d55775c913297e2569b342d106c2d80a7f36a7e1e6bde8486a9a5b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBQLU1900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c89b64036910c90c6c7571b1d557f30084f6288d6da713ee06c4fd10fa2b40e. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/GBQLU1900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb8e54c949a93584dabe50bf9d9b6879c86348c5b39ae2adf776d186eaf7b3e. 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/GBQLU1900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400538835756b63f3f0f7c6cb38a36abbe962ef103737777fa5377c11ed1062c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBQLU1900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ff6b2f7d6b9454041a839426d751b71901286144d0ec7c9a31c3381fe3a6d9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:34Z), 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/DEUC72300319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8afceb93b9ee92a976691ffec112e98a2efcbedee0fd5ee3fee0b103e6cd87. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEUC72300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509c4887196fb26c25c069f413e694cac4962e4046ee41ea6830b34f8b30a376. 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/DEUC72300322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2984ef0ea38dae4be9aadc26f1af41f6da5ce65d3deb9dac1d4dce5794a990. 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/DEUC72300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0768626993cce64e345067af10125a480e053e6a20c2795af3b930d496d3fb3d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEUC72300326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54249fbdd202a738c59d6a36eaaa9edea9d875e8cf677462f538928698c443aa. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:33:09Z), 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/DEUC72300328.