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 0x6b8cba6e13b4153766ddf9703a58319c1732ff50c31ceaa53ac5f51364ea1df8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11855f59-c195-4fbd-9857-0c8a419d30be.json and https://artists.proofprofile.net/proofs/artist/11855f59-c195-4fbd-9857-0c8a419d30be.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 0x7cf2ef85539b920797724c70922e83f91853982fa087f36d61d594df53bf4d4e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:44:44Z), 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/CZJ701300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b5f967e0b7dee602fffee017e63e83792631d0c4d33ffd8a272959f5911da8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CZJ701300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0312d65d76b25f55e297d390334832458b7fe7677c911bac5ab7b7852f9895. 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/CZJ701300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578865922be5bbf0266c139004602753881c44f33611e0c4f9b19c92a9582ebd. 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/CZJ701300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69d93805391c81e365165bc3faebf0dff297fd211710b3ca3a02c63e1afddbd. 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/CZJ701300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e07ecd0cea5f03a25f5f126c49914547ee7706767967cf765acf032a8b6054f. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/CZJ701300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d98670e9b0753a875e143898d85709016bbe01109fc7c2cee8cb7caaaf2029. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/CZJ701300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc63e15172fe0461368b02a6bed5f134f5ccbffb0b2bd7e2ed1c0f04b797c36. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:28:03Z), 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/CZJ701300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18efa82a6993006abb15350713a422a369cff2ffaf4b02d0ce47d8ccd66ca920. 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/CZJ701300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f44e26140c04fbaa0993ce7d44b3b3f0268018265f53c00866231d5e6d12ca. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CZJ701300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe400c35615fdae334e3f072fb63415c7ff78b56b3794aa990c66c72edc36a5b8. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/CZJ701300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8978489f2987b762c1c1774f0b8c605cd99d47aee4dd34358f27b4fa9bafc9c. 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/CZJ701300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5aca85e9c06d768b996d48212ece9c695d3887b2721c82f8fe3274d391b4eb. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CZJ701300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03672c091fb8e0745ab3b8e970ff810377740bd7a0af56e7e2d73c2d93a20c1. 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/CZJ701300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0085b9ad1163a9bf6906315f94c8a471c1b64e428b905766c574be0f809778. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/CZJ701300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64a62e11a87a1c3e4c9c6c30573056babc1efcb2dfbd4740649ed90a45731cd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CZH111800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4edeb138087e33bebdef767f12092373a92d3f8d1b2dc3e8f24bc1f9063fd9. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:57:54Z), 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/CZH111800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49406ebc7685f60979b95aad3be115759ae8cf4e2a6e9a205149e9edb8870e94. 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/CZH111800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac42547f984add103bb2e2cd0d8be37eb72fd28ad49c7f9694d0d32b7f4ceb3d. 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/CZH111800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fabdc3c53cd6b2e62a5e1cb19d28f86b4f5c2179acbb65bda867878eb8ab6cd. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/CZH111800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31be640f8492607a69b6a703607c3c014adf0f0d6cb8761e4fc5ff7ae8e74df4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CZEI92400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987b8b37c9a1b0b592f90f398aabb35c4ede2fddd7e6b82ddf246d7e8b9d9825. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/CZEI92400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7673dfac0091e19e6f1999e66758094bd8ad1eb120bf5c1d2f405effbfac36df. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/CZEI92400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4275beee4cb5bcce7547b9fc79ada5c298d5fe429fca22ba5eb3e663a5433e3c. 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/CZEI92400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011b31104b7c5b6d9e8a259efb946c54e2ac61011b8d7c8780ac8a2cae35b229. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:04:51Z), 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/CZEI92400010.