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 0x86cacd1ab1e177e620cd35a1257d01c4b079aa5ca48f9a82d7a3bf1edf18484c. 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/2eb96701-53af-4422-9224-866b16b130f8.json and https://artists.proofprofile.net/proofs/artist/2eb96701-53af-4422-9224-866b16b130f8.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 0x5690c0dcffd709f973f0671e5aede5896e59eb84bd9597760cf4165ab2e244ea. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:37:13Z), 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/QZFZ32269447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c705c048ca0a56eb30e6dfc3afde14564aa56c9d502a5cafe9824d9e931db2b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZFZ32269449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570b54fec62ec847d4df040bac3fdd7e489574756855583d0dd80eb6bb258bc1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZFZ22320665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788f5b478a238a71eb86e43c09ff9046f4b38b7aff70e81fdfa7051b970c25d8. 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/QZFZ22320666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0813db0bc7ed5ed3a4632dbe18c3176ecc1aed6b50b505bd35757dd3aec6962. 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/QZFZ22320672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d67328447575ec5507c0067ca0292bab5ede1c18d15638d9209efcb532a060. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZTBB2328177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457f9ff80319deacb2175b5afed3abc4a40405073cac34612ea5bfb0522f1107. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZDA62472631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8f3c5622fccf79e1e99630d6e95d4a020ee39a4d243b08b969dde558372b4c. 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/QZDA62472633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75818d7262e877c68efb5a8a4ed330564117953fc96a36fa0a77b81fbd99b0fc. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZDA62472634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182e24aa249f10bb5d9180255bc8936ce2431a52586440f58fa06edc4cd09106. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZDA62472637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e89ebf991419b83dee00b9faa71f3888c4f33cf33f21c5f032088750c0b399. 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/QZDA62472638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35074251d983203ccfba0ce3e949f06ec242e0bac361c58ee80b41d075631a35. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZNWS2446513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4b49dedf72d7c7cfcf690ce040c529c46558d6edbf66efe04bdc1e89a82f75. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZTB72489763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15eecfa3f4f2af0b9f59ce571100f8fd75053e07df20abc3c5dbcec0a11ce95. 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/QZWFP2459835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447b2e987f173f78a80627e950b02d96b023798594013d430af295e7835a06bc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:04:02Z), 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/QZWFP2459838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fb0e8ef2e7ce469699ed767846cabefd7e5f02f43a4ae7e75e0063bf07be11. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFP2459842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f67e118601fb0639409f6ec0de86d4cc28718317adc20d335cd9b0c606591c3. 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/QZWFP2459843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee09aef6de5cb3b37ff0132976f1248d97745abebad7e144305c8bdc2b2b26d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFP2459845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fd8dc7b813f537daee91e24e5d2a36f70f9e869f11d3dbecd8687d1acb8ed1. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZWFP2459847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec61dcfc843e60448e2ad0aee632088b9652a025f1c51609660c61223f28ec96. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJX2545818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f1327b550671b8a5b6f93b20b3270433e699d156a014abb8ab147a065a0b10. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJX2585511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2316f71ef61824ebe4dd4edcf9fb7cbcf752086fea3cef4b17b02904ad71bfb7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNJX2585516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe244a73c0c6a5e11d9f08ea1c4e81e073cd6a8281a30034b3bfea6e28990461b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:41:36Z), 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/QZNJX2585517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacea8fa8fa1aa3d3899b620a7a8980b091dd6e6df583ecfd437fc879301a75b9. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZNJX2585522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63cee243ea2832c528a4f047b9ac31bc36ccaf9dac81f3f55614ab6d442a23e. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T07:56:05Z), 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/QZNJX2585518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d21432a8eb7d662f5d01944526b6ba5e80b96aaa0e5600bb7e68d3d9bb0c250. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:56:50Z), 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/QZNJX2585519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6678eaf8075f23d8bd017b6bdd203e5b1798f7c5d6230a31f42e7793f9ddb3. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZNJX2585520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208ba83d94f0f74d7c4bf65db90c40789fa4bbab7efbe68c4a3316d66c3513f3. 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/QZNJX2585521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bf49b0e43ea8661d456f943c5ac8899f248ad48b0b0205ee6d7f7619dc686d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNJX2585523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec61dcfc843e60448e2ad0aee632088b9652a025f1c51609660c61223f28ec96. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:26:36Z), 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/QZNJX2545818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01842c6deb26b756806854ec6c09f5ed73f6fec6295619c5f9e11b27fc31a12a. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZTVM2534196.