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 0x4dc8a57b3d08212fdd05dc39f6d7163d0044b681a4cdbc7ed7bd203e6b498c35. 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/a2ed114b-7321-4a45-a12d-b60a7c246496.json and https://artists.proofprofile.net/proofs/artist/a2ed114b-7321-4a45-a12d-b60a7c246496.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 0x4f5616dbf685aa45487465da177ef00ab2348d023d1f0230b4c2d61e5ed190ca. 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/ZZOPM2115944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10ff1ee28861738818ee5dc48f90b77b814b357abfc215bdbce95f3f8788033. 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/QZDA42237443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d71db482a7a7a6c1407877c893fc26507b47682988fa92d441bd90e8a453b24. 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/QZDA42237444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc574b3d9b057edab27036f95d8d9f512c4eea4105273f17fcc4fbfb7b2da0db9. 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/QZNWS2079984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de1817d67c05738136e516e0863bf810d5b912b390ba5562240151f395b72a6. 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/AUMEV2239922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9140268ee580638df652e634f1d09e92d96c180ae8be62b8cb57b0ae1520d0. 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/QZFZ22425835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e41fb057f6464a036648d72d8c181e1e7c1cdb9edb713e2d872403472ee5640. 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/AUMEV2436479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73976e7fabdb4922f0c1bc2610297d60c3af059b5092e2b2026b7065ecd8a3bb. 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/AUMEV2439617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfb2850ad76537d9ca369e6b934084a1f28687f95b8fbfb1ebd011463cb139f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUMEV2400765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cc0998a60148ef8ec58e3a31d13eb88556a1c81e53f6b1379b7c8dc76a3828. 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/AUGBT2306863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc760ddc9791e4d0e393152b1de7e0ff21cfa885323845c6cdbce18e98faad6fb. 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/QZTB22354412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe242f064128184593edb49b3c0361fbb13e382e7f6961ca1f773dc084bd7ccf8. 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/UKXN22321594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaea9e17466d7b3461fdd480064f365dbc160dd877053b331ff308adb3a27f2c. 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/UKXN22321593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1592035447da5cd492ab86c9a46a2abc336dfe770e8f2435fc4e0d4088d8d7. 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/GBLFP2363531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3077585a78bd454a098271a03a8c9e6f39c323882fdc377b65a9bd5ad3635e. 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/GBLFP2363529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bac1145629872cc26f98322894b4ec0659d5bac752076748babecdd5cfea6b. 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/GBLFP2363530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1592035447da5cd492ab86c9a46a2abc336dfe770e8f2435fc4e0d4088d8d7. 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/GBLFP2363531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3077585a78bd454a098271a03a8c9e6f39c323882fdc377b65a9bd5ad3635e. 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/GBLFP2363529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bac1145629872cc26f98322894b4ec0659d5bac752076748babecdd5cfea6b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBLFP2363530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cd6114d69b58b76fab0c5bf4cf18c50d3c6b2ba4c541e25a36807f2c7e294e. 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/FRZ082300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614a06fb9883d83a77404cf740c6a14d9d1a172991cbabce05a5c50c603169b1. 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/FRZ082300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1fb633ce91ea500619dda03492b031fd9984cfb32f2cda0f0384cf274b89b7. 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/FRZ082300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa311bc90d0be8ab0d652a397807cbd04a18e4b8d959a397867d3e693ea8dc11c. 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/FRZ082200966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85ca9802e5a90bb4e9b901950191414fff47685a2b14b71caa5b611b82cb312. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/UKXN22210639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad7b5678486e923f0223e1cc42c8e5ccd92b08242c9885cdcd7c3c6bc2e780a. 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/QZK6K2209669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fe276677cfa9e1b1437a8a823dae657740b6d4464ad6eb67065e5451ac258b. 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/ZZOPM2231715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5616dbf685aa45487465da177ef00ab2348d023d1f0230b4c2d61e5ed190ca. 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/ZZOPM2115944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5034b469cbcae8560423f59da71d0420c422e37112e43c124d91b47334a02859. 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/ZZOPM2222637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0b5f690c103dbd3c53bcaa747a60b593f1f2fd34eb29c22aae7c73ee6aba6b. 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/ZZOPM2222638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d1bedbccee84ff252fc6074cca9e679de50f4d76acfc0b2958a6bc2eb81640. 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/ZZOPM2223202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b9d9573d043f884520d0f60dc226948010275e27bf76a9819fad2be769d8fa. 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/ZZOPM2222639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d4de67f46a8ea210a49e45ff77ed8214ec6017a7178ede5e9b9936d6190317. 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/ZZOPM2109128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0b5f690c103dbd3c53bcaa747a60b593f1f2fd34eb29c22aae7c73ee6aba6b. 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/ZZOPM2222638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187a403613e7eed674f1391f00a367668895eabbec2cbf77c67a8a7d59b0551e. 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/GBLFP2046160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc3ddd2f752dbbe2bd5c7c1b2553a4df14e148ef326db2c453eccab42b6cda2. 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/QM6P41952442.