1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8b3e5d55606fbfe87a174a0299742599a47dce9ce6a8fc63e89297468f35efd7. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c77a67d6-2a78-4481-a62d-cd9693b3e781.json and https://artists.proofprofile.net/proofs/artist/c77a67d6-2a78-4481-a62d-cd9693b3e781.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 → block OTSBitcoinBlock must exist at that height 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 0x9277018605cb9f89e232100b5811ddd5b8005083da9745cc6142cc7cdf71fad3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTB32218335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27468d57649ae7a882a02f987c1299b3c467d997f845bc670f66333cb13a9f3. 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/QZTB32218336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb0e32e75d35de5c86ef853474b69810687880c0cd09ac71ca6cf611ff7cbd6. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZTB32218337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591813f7abab779000824a2fa7eaaebf041ab79e3f830a53e0197702dbe5745f. 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/QZTB32218338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8764fc264a663720ef353303537b371dbbb4523ec45f3863ee6a99011cd87c9c. 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/QZTB32218342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49860e1815a51cb2227ba7de6ca638035caf45845e5749fb8b9dfa3e6d01d8bd. 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/QZTB32218343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee5f33564f0428f5323b79c76600148f1a9d8e6325face2322ae1eda6f6cdda. 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/QZTB32218345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf02f1a5a24070d518475b32e901c11ee1beeeaf89cbf70aba9016b87d3623e1. 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/QZTB32218346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdc14442d01d350109a0d3fc94314404f61c86348c6c8701fed6948a6d2f791. 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/QZNWY2223653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd0a8358b7261af3e61392021b46a97e125180004a6b81e8c3a3b4a9209e8bd. 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/QZTB32218349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a122d5ffa9bcd45660616f5c00482d6099f6e37d5602e0415118367f2e8e26. 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/QZTB32218351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfe11412e51f2394959da1798c2572e8507602ea6b41b3b427069439623f6e9. 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/QZDA82261155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc54278395c388a3987943f517c371e5951f6f57cdf3e4339f8371020d2d92b. 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/QZHN72257036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fe6923f6e50aeb0375b4b840a3a5194ce19b69c326af5f20f5675ad415c1bc. 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/QZHN72257037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2504c9aceb0c1d421fb20f2b8783b1137fec3248c9cddbfef5f67c1dbff7ac. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN72257038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabe42605de88ed7968962d1d185428e4bb1330feaffa9bf281e2143fc49f816. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZHN72257039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2bc526d103e07b7bd344345f0eb8a6784c80416069a991de5264393b8a2067. 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/QZHN72257041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c9742fb4a5991da535f7abf023c0a549b8116f1917132efe9838b12fdb8a92. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZHN72257043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9571ba38c6fc9c14c71dcf6bf17d1b82037bad12cce7f05355ab58d7546a55d. 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/QZHN72257045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd45ebe1c406c3d6ef5a90e20f9727f5a03a0dbe36a8f2f8a9a9e5745b91bcb9. 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/QZHN72257046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87666d810746751d2b2fbdba9721316e85a79ded4fcdb2264b625903bb00d992. 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/QZHN72257047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb8f967c487fc9cb5ea976eab557f9ce86b9c6b239c344318f659e0035baf7b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN72257050.