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 0xd8ffd7e2a528dfe99e7662334a6f371c5d9ef46dc7d5ca89c59789af88275bfd. 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/8411e570-75c6-4d48-93db-62b31c718873.json and https://artists.proofprofile.net/proofs/artist/8411e570-75c6-4d48-93db-62b31c718873.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 0xf2faf7ec689430bc5c41842eda4baec89d207f46c43b4678c73bc800aafce938. 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/QZHN72221385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ad95b2dda3773a974f463829e65ef05724c21f884876826b9df4dfab7aa934. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:06:18Z), 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/QZHN72221386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32df6d8d343896e96d7cd55f043f3b9439b489c6e92483d99f698dba1057f539. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZHN72221388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95fdc774f418fe8069cc5b8ef86327dd2ae4c3c659b55aace54b580d243bfa6. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZHN72227481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc41c487250b9c5aec52e5f7d3584ed20e6a2f18f79187cc55d3c0c7854030a8. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZHN92355968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed606e10197c21e4eb9c87f0d98ef5977d7a3a47eabd03a6b335076104c5fc98. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHNB2377091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412fcb9f0afd16088fb63ed3de9b98cb8938aa0a51d55aacfabe0423de010873. 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/QZHNC2361326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46d6c361a3d9fb38a7826f8afdc4417839cea11cf774bfb08dd3fa781124ee8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZK6L2310247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d956d8af8a0884fdd0b8f8d41c74c494e702084a6b1f5a37c6008e68822b25. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:47:39Z), 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/QZK6L2310248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ed901f82bc12b0ef5cccb0f3d972a8e1fec634fedb79888161d68bd8e288bd. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZK6L2310249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe325bde186d7e32bf6b9ead581d6624514912c6907ecda47b487f9a45d4306a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6L2310255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3edc3e23231cd16227b3d7c365834c2d0ffdc1341a0fb5ef136e4b48db428fe. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZTB32310066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9905a3a19f9cbaad16be1ebbf112030d77b1bc76ada7b455701d7d2774dda0cc. 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/QZTBF2338867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09c1f9e3e60bfd1058f61c7297dc27fdafe2bd960942d22ddb3ca676fa987de. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZWFE2343305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7564c7680e26f3514d70b83538f054d857827065f8f9770ba99a6eaabd4a0cad. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFH2374340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fd264f20e23bc67e092fa80d3f0987febec8a2402356ac2c943addf16fb261. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWFL2357156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ec35561cf9a52e0157bbd3071ce944334b6179466cb0f5178f09c691567398. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZFZ22444436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa35acb892012455074a6669ea442dba0b2c3e9c804bfe1c0540f5b76df5705. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZDA62433221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c8ed04b923ca240fb9fbc8b19b2c039103912d51f382cf630cc05216633f6e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZDA62433222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf53c69e4bc8da253070401563cf2e6ef06a07f5f2fcda84b7b0f206226f9326. 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/QZDA62433223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70136d61fc1f19b0b4b3f53a1f274bfd5ac47d819d99915dcda62c972a046196. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZDA62433224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3a286408a9544eb06a13fcd1a37769fd41e434a70022ccd7b73773fad25477. 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/QZDA62433225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498526f56f833d804d3cea1c918167a5d2c6cc88b6c387c5589a27d981804cc0. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZHN42499879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465933e49f7278fc17bc5d726ccc378cf4ce5b58df3dace1fabba61dbcf3c0c8. 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/QZHN62436748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec064bbd7ccf1e2b0649d8a09cd0fd4f3e03b0a45292d01520006447b52eaa51. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNC2489617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b108bdf85832ca271efc78233ffec220186720db4d4119207f35cd5b5e61c22. 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/QZK6F2465638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aafbe0ef52749ce01f62a6524547c0f7e81df446a235ad91b4aec1d9468ad1. 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/QZMEQ2463861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c87b70a41f33aef5cbffe3aa1f15e83054c468e025f9e12f6ae40728eb7f748. 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/QZMEQ2463862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ed5646980dc066dea468a19b16e64667897072651a8101b18a240bf04d91c2. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZMEQ2463865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb5eda16321eb8ce2bb591e7ad96f102e53a8a889ee247dab38b9557f4637c8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWU2403858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f33177e5e325e549be53ae696a77691ab1aaf276f62180c5d49ede443f86738. 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/QZTAT2401114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe479a423c289d7897fc16619c130e95d0d4d7489be48f941126fd6f90df8e35e. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:19:16Z), 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/QZTAT2401115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b8bf185132a431dbff12020bbd9fac391489550c3fe8b3ff76c90d79e62183. 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/QZTAT2401116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f17d48c413cd077983cf193c2eb54b650ef73dc96b7aea8b4236a5324a5884e. 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/QZTB72407030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb614ee760c67e46327434d2a91a5e8cf7c89496d1f4fabd3ba8b180e122601. 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/QZTBC2498608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeeda73ac6cebcccc31da40f6056b020f7c1edea135f136d4750530f6c952dd. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZTBD2424142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cd211723615e45aa646dc0b41d58469879b58e68433ec13974a1c28066a2d8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:35Z), 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/QZWFJ2434195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2df7b0b733fd99f0dbaf1ad9fbcd60b48cf7cd15fb3df89cf788b8f68d13cab. 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/QZWFK2489058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad992d1101231c20dcb3dd7c4f2bd33f5be5884cbbedab4a51f3f4f59e0d77f8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFK2489059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8fd29755698ed3b9e7b2d66aa45fea15e370994d983a486a423e6aee320da6. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZWFK2489061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b5fc995ea88a48e41e0cc630c22d33cfe683ce91968be24b5ed334b1c58e34. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZWFK2489062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fa22a329a076fc1a48a394b3375211c12c76967c4ed3a870731fb980ae20a9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFK2489063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3b2fa435c82a1dcd7270e3899b5d9aa25e27a3dc01d232bd4f1cf5e04ebc90. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZWFK2489064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f683d88e10e7531d97d1df94ae81f30bf72e8b5c665537aeff16048394b3d9. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZWFK2489065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327cf47570b43c43d786d8e1f1ed06cc1b6324561ddbb5a669aea15607da2ca4. 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/QZWFK2489066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb66e78adacdb2f0d6378be8663d2864496ea5526f4b733c2402064bbd5a4ad. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:25:12Z), 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/QZWFK2489067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2379c17129834fd34efec196e1cffa53e2fe832b7ca2f650c3b42822712ec7. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:19Z), 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/QZWFK2489068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e1580d7c7fdd336d0cb85db165697ba9d502aa430b1281d246afae63f74dba. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:52:10Z), 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/QZES92527941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71214627c8e631c5d80b9dfc7c93e994e4260433da31d1e0245eb08a36125a1. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QZWFW2552373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef49d46673d7a961938df15fcad9a87929bcbc3d72cb5321cc8e8c4bc8fa0209. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZTB62412037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0272f782974dcff975ff3d746ee0937b603a49f5e72b8550d99a85153af7aea7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZTB62412038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30effec9a18c7377239c5b712414b63846d126622e662f18844c9a119778bc17. 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/QZTB62412044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2e7afc5e1769399c95a504502818d000be40a11ba8e6db6679109ccdcacd3c. 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/QZTB62412042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ae579bd0fadf3b64c32c95de38bb75df2f553ed9e827cced3baf53214e538b. 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/QZTB62412040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b733392f8a219937189cb5ceeb7c919115542d90c8b8a8ed2a235eff51d3de0. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZTB62412043.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da41247dae6d5e338d557b74dde4f5bcbfa50044bcfb90d5d623d3bbb91f110. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/QZTB62412039.