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 0x1276630e5f15aa461d85a49a03ee490b16a5ba00df398f7d0dfaab20f1a8f1a3. 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/54293a47-5158-4c21-8173-d40954fc9c9b.json and https://artists.proofprofile.net/proofs/artist/54293a47-5158-4c21-8173-d40954fc9c9b.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 0xf5a6ea4d22978627bb8e9aee98d6a678ed8811c50426ddfc21f0e24969bcfabd. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:31Z), 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/QZTH92298810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d2dda2e13c4bd1cb152b1d3cbb3d7fe34cc2e367e1f34fd0b5a70b26888e3c. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZFZ62362796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d7a500e28af27115fd73bccc2205031dd16381015097d5477f85a9af3f9775. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZHN52368914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8e1c93f061842d26e6f237d68af650e5b083c95e4eae9dfb39aea2fac92197. 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/QZHN72372777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0fb93babd28ec0941567a762e362543776c4eabe0a1f38d148468e4cccfbe4. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:53:09Z), 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/QZHN82322348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46336fd86c75482273326b7c0598086306c398800d7ad008f58a5fe2c11355c. 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/QZHNA2377196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49f47dddbfa6423a38b6978884da6fb37405dcff92057f50735e8d82e6bfcac. 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/QZK6Q2317734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecf654b18cbe159b2323a62a4ceaf2e1d7e9baf764a66b4ada2d79d778bfcc3. 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/QZMER2335673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7bf6febf0bc99e25fac6aeff622e0e5f7d335444ee56e21cf3ca2bc78a9d8c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:30:18Z), 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/QZMER2333909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8d3fbc582a15c6b1a5b8533446b2e8cf817ada42c1a164e5334ce4d8006c4e. 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/QZNWU2390555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42963a8ed7dc29bef5d8f86e455c96b0211c8250808fd21d82118d630b7bae0a. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:04:10Z), 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/QZNWX2302371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ef7ee84d5e07a05741ea962b2c402e0ab42c750955d8a3664f4ade10ecc11a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:33:53Z), 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/QZNWY2389387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9c721072aa941ddf606a4323c58f2ce001a1f45ac9527e04dab2ae8e37ee3f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZRP52380091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300c59c10526329bf207cfa2b61e3f011098611b73f1ef683cea8c54f9139860. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZTAU2367047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e174ea14268a75e1501e1f88cabf634d51972123a9041290843172d05203ea. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTAU2367048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e67e05849850f191ed7c2a3f9f997f69cabe823cd57e39199738f16cf0a8ea2. 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/QZTAU2367049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405f047a4dd04bf294df07a313f3ae762d58814beac4fea6cde5513317f0768b. 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/QZTAU2367050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0a8a3440de553962f1fef0ca38b99de0785c8f388b4af6e1374e24e021d510. 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/QZTAU2367051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f7c40b107af75fa5201de8bab5bb6d87d81e76137ca08a71510b525642f85d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZTAU2367052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dd93f034a47a2e0cdfb0e805a7040a9a20f6a6a19e2caa9eff74d1e5c86a5e. 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/QZTAU2367053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3219ea0eed39c2da330e2de10db1868847801d16496180a37428d0cc45365d31. 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/QZTB72334697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd6de4df9bcf6f10687ae8f0064c0602de0447b02fa6a4a98be40cbcebcf8d2. 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/QZTB72334699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ac7928f4201aadb71abb26821031e08ea88918227a2d6e1a60ab5820d36e97. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:05:43Z), 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/QZTB72334700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf181d3eac68d8777d839cae2ac9e304ea52ebc9c332147871939442915aab24f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTB72334703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123754b42348548d3056da500c770104df904ff33e79b8b85a19597c9ec2e66c. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QZTB72334704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934773b1e237e740dcfc0660a796a598a1338e32f68b9780b605a110df8779db. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:33Z), 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/QZTB72334705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632d0311849efd7d16af5cb3cbba5e1aa01da06105bbf157e356c24d3945683e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:35Z), 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/QZTBB2357623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeb26a3b94a6bdb83073a72e9ccd1d089d95582b6d1bddeb2de464f8fecc0e2. 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/QZTBB2355155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df5b4893cc877beaaa2833f7123097d3b593f403a863b67b4b5b87e1a87857a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:55:09Z), 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/QZFZ22404291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a3e7ed4789e2c9d8f276b89d8e4ef78348725d2a093c5ab99724464346d8a9. 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/QZFZ22491372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eddceb6eba2b5b1e035d6c7f014d1fc3f8e348a8ea07eecd6c82a57d121f2a. 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/QZFZ42408229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fbb102faf13e741d079a97ce325e2160a6ee9c681391b7c920353cd79395fc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA52420960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52db715f60be6682212c8e71723aa79e12cd4f83de2a7c2d449c0bad740576eb. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA52420961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf68891d6afd3f3de739a2d72663f966a15cb4b83fef378ce720e1fb599315c8. 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/QZDA52420962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5117a2aeef283c93719ac850a528a67311ff0768e38c0cc6d178113f3abbf460. 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/QZDA52420963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6a932531cc2bb10ed48dc529567db4d80e2c8bedd97f764a2395f2cb6ee667. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZDA52420965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0d181e7a24dbf7abc52b19762a35bf8da1c9af87a29e5942b8d1b5e4b402f1. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZDA52420967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c5586ec7c824f02a6de55dc5a270d6d38c3fdf68800b5b96d574e5f8b94af4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA52420968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bb0d1310fd2d081825268191b567e840a453a85e73a88cccb19f9d0b39063d. 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/QZDA52420969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed576c224cb17c0cdf2256a2d0bdc0778570bae08dc26a8375ec28ee1c3ab5c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWX2423738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91b3ae6fde3f9dfb5d10efe769846ec2403bca86191b50efff578f31f30fb7c. 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/QZTB82497608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8afed66068b91e8343d5412bc76ff530082c4097ceadf951fdd596a24ca5c97. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:27Z), 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/QZTBB2466372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe67c4503c35d927de34d12764b3017cf2b080446095b89bd83ef038c4e0281. 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/QZWFT2453135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaa98361f678deeecabf5138f47a1c208a426e1bdb54ce8b071dee707df5a1f. 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/QZWFU2411046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472e7252a7bb6a3fe8b1494929a04a270e7977e39a0064638515c13deac6b1bf. Chain 2 (Bitcoin): anchored in block 957835 (2026-07-13T09:48:24Z), 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/QZDA42549808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5c775bdbb2584cd9681617d6502750346e2637e72396276db1185d56c2a413. 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/QZDA42549809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68324db0cae6af0b556a881f8fd6b04e58b184b6e3d26c70d7631bd2ad604907. 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/QZTAW2479860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a7e752298eed0a31c6f015cb8acd6e153dc532a6c4eb08bdfe79494d468b09. 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/QZMHL2337071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c59434f8b684ea8f1d1cebf3bea0f3b746b905b2030866282bc9dce364b2cc6. 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/QZDA62393641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95f7ef1beff7993bf1fa07753914cf310bfe594957eeb6e3a82e1cad1f00048. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:26:53Z), 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/QZDA62393635.
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