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 0xbb44f1052e6c42caca689dafd9cca0a3121a9bd7a65830b8f40dc48fb8aabaa7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f50b37c8-36b4-467e-a716-cbb349d7b26f.json and https://artists.proofprofile.net/proofs/artist/f50b37c8-36b4-467e-a716-cbb349d7b26f.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 0x9b80956a323acbfa6bc534b71c18d7a7aa998fe158cd13169e7cc2d4c8c54877. 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/QZHN32411088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c79235b7008058bd858e97eb1313bcb7ff4e172d939d8e2040347fff5dc194. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZK6N2453933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c4bee4a3b3dbca11deb5b4e322c9d1e8fe75b2a8b09f4e236df393c62547a4. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZK6N2453936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7738947e3ab0cbb09b18a49f2886e30ee611468e7b703cb25cbd91805760874. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:47Z), 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/QZK6N2453938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4e9aa34e246d2f54720e63f716cb4624b05f16ff3a03621afb1c32f471f0de. 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/QZK6N2453939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777d257cfb4a37cad09616a7543a26cd1eb0240efda1a23a791063cde2308a35. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZK6N2453940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba46e6d01fe31d1726f4098c7a2b744b1c5ee8aa3e55b09f9d4c2726184c7ef8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6N2453941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17ada8dbe8ad3fbb6c1c13b9e89da81455fa6edd50b3b1cf04141f83bc43a8c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZK6N2453942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e3f11402a09c83b97b7b6a6c12e88fe3ec5b315e8038e54fdee4d4b24fa80f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZK6N2453943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0095c4c4c3cfcb5b445942326b8675bba3bf3079d489cd8199b6c0639fa2fe0. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZK6N2453944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f8f6c7cdb4c162ce8764ea9bf412267fa32a34a44898faf65abbf8da2660e1. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:10:06Z), 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/QZK6N2453945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c02f44048a9ddb769d241f008d321a83f5f4f54fc9b39746f986174d2fda9c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6N2453946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bec4bf5b7184a52208220e561aa464a7e3d12f2343e853c56c77e47f0f4c41. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6N2453947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bfad5dc88bb180cfbfde81453fb9958fc014d457c860e8e4fa3e26a8109c53. 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/QZTAS2428088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0051f48642e21c0203bdd66649cd3ef5dd662b985153f91a839c21ca77358db. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTAS2428090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376227c0295ea46a508fda0abfb493a3ac49eb11932900f557306de48a6dad20. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAS2428092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c9cae3d926327723b18e3b16b2c5a5f651ea6f327b28c09bce6442145ec69c. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZTAS2428093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad6a5a806ac98f89bff9063c2e518061b00b530e66f4a9b4bce470eb5553056. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZTAS2428094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98344824a3a390db239b15277b943ad22e97566b34fc5723942cce97ce237ba1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTAS2428096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fe9edda57f710b9d921d5edd74df638bd99ead701cca5c4177c9868d59333c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTAS2428097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26c748105a4876f4807b3ce6584ca4cec56b823956664e46b435d1bfcd39c73. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ7R2434847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a7b6d37b70708687fc727cbc0dca3c10a0d963efd412f1fd14eba63b1093cd. 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/QZZ7R2434848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11156f2dbc146659bf19edfc3354a5bee6f953e8c8a7a8f7842b219516736e52. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZZ7R2434849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf350451879789d329fadcee6736b3078046817f2f4231c49a1c820a9245d90df. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7R2434850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f271a4f229363ee669731cb16230d4644b2eb8a383d837b75f607a84f7571a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:11:15Z), 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/QZZ7R2434851.