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 0xea72d5576e13bdbd3621af394202b01dc93654ba09206c6cc874294d248f690a. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8c3d67c-d989-465c-9c3c-21fa3698fbfe.json and https://artists.proofprofile.net/proofs/artist/f8c3d67c-d989-465c-9c3c-21fa3698fbfe.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 0xd3e9ee6eadb496e59d042f957cea66544e5e5a6168db11b13d30788cfe290401. 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/DEQ022119064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8907f8f5bbbc734c371cc4d95a30b402f8d68fbe9e374ca490a882ce48c716. 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/DEQ022105634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12f8e10111a74c056a266204add354876bce6ed53b0fa03aad63bdb8ac32a1f. 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/DEQ022111235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b78cf371c5018a2c7c022f45c617cecc9db3e5ec35e8154e8bd68fc79f3e231. 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/DEQ022116501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388a9eb63689d77831dd8901c15018d286e6511ed3f2bb34cbdfdbb9b62fdf0b. 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/QZTBA2363495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37adb5319108ade24ce7f21604a4944bfb2cf08c7eb4537090c619a3ced21ec8. 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/QZWFE2344934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032f67c169b039ada108e84991e5f4ea72c93b583f2ed607dbf52a6f387e374c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWFE2344935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4f0d2947cfeaa367b847aa4c3f1ab495f48cbc35c150f1a193f64fe36e93a4. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZWFE2344936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9776dae4bc173c22deea8e01ba61446ba63e03bbcba56e1654abb0e41fb070ed. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWFE2344937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4189c80c0343f03c68042d78f58decf5a459d7a033340daa645b97306cc7fa6d. 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/QZWFE2344939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf352c8be115252063df11f88350cf76081b16741ed13687fe596874977c76aab. 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/QZWFE2344940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0583a728559a1db0471e78b8cbf53ee3fc3689a9e2d8d078986154b96c74fbb. 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/FR10S1926162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfc0d7d73f92a570218c22817ad2f9a6741a99c8e4a6b9c9a52f9a0ae336896. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR10S1926163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63abb63108266567e560de0dbc02f77d6fb5d407d2932629a815b0a5114128b5. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:22:14Z), 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/FR10S1926168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6599a0c50e90f451244a4dcca5ffa52b2248ec2831911e51428e60ba2069d7. 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/QZFZ32338715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6b0c0c170883d3ff3f8b7e386b678f1cc58179621ff5b9f918cd3242179426. 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/QZK6L2317224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396162fc89051166e7e6269d3a810358822ca798fb2b19190a827e1242767f16. 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/DEYR32000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac9f51c53dc89a74ec8306017ebc795a6ecd02b6a6677af3bfb11c3163114e1. 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/DEXK21900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c85fb45172b7ba379c51febfccd32f8a2d682f4a2ab330a22dfb9af3885a2de. 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/FR10S1861825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc0d3d434929f5938d9a3c0916e4a9c1c53ed6e04a168fab07f4fc73359f8a6. 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/FR10S1861829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafa50fab42e2aeaf4fbcec6a8eaad09227d751b9bf6ad389db7c02eed5bd1d6. 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/DEZC62390915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9061f807bda0caf4ca8b21f31c58f5eea0f13994a57c1bafefc7a68d75d2cb. 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/DEXN32140001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9f18aed1343b7e21204f32df478232ade77aadad6876576516f28d7cb3bdca. 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/DEMN92000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a4ce74fd405c12ba6f20ce951f13a4a1dead87332d7e8527f8963366ae4352. 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/DEYR32000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb4e54f6e7f75590e1e8815a08e5e54bcc30e198d460c894c5044c52ddb90b5. 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/DEYR32000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1ac1f8c84d9b0edd9a9fc5f2f4434a491783b2110ce8501227f1d5a045c066. 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/DEXK21900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac9f51c53dc89a74ec8306017ebc795a6ecd02b6a6677af3bfb11c3163114e1. 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/DEXK21900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc0d3d434929f5938d9a3c0916e4a9c1c53ed6e04a168fab07f4fc73359f8a6. 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/FR10S1861829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42416f2ec451e058f478af59439a04167ec198a982a02840661cb65b29545e6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR59R1736718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42416f2ec451e058f478af59439a04167ec198a982a02840661cb65b29545e6. 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/FR59R1736718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e5212c95c7bb5a8ef426cb04c3f4026373c46d42263c25451ff75796d6d735. 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/FR59R1736719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0533b781b21ab1044e9f15d8e15dc1429e9a2b207b2f56a1bad0e400cd27a27. 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/FR59R1717481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c35d4c6a18e0e03563090e937a4bb2e90d535490443a435d95ae5ae347d9352. 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/DEMN92000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe7c16abc0777ecb5435275eb719440ec181d1ec1bc67c37d1a293d997c9cb4. 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/DEMN92000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa4d2061e80d9dba88d15dd2b938f680ca978e8fde9b7aa5c7c98338fc26aca. 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/DEMN92000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8a529483291ff8023310e75ce190070486810ed84fccaeee91c3a36ec8cc79. 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/DEMN92000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f3abad271be6ed1ed0dcbad7ceb693dafde593ca2309b95d344306935145c8. 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/DEMN92000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9f18aed1343b7e21204f32df478232ade77aadad6876576516f28d7cb3bdca. 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/DEMN92000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7083946b2f37a967c8145b15e3b47548b96bfdd4110feab021d1c492124b42. 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/DEMN92000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bf2502a48f8c0cbbf67cf2f1208e468cd38ac79503c31e0ec02fa0578421dd. 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/DEMN92000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6ff3762385b7a82608804483e489fe8be6a4b81bfb250fdaa8540cbcd5fefd. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEMN92000068.