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 0x8d7ce96549090f0e0417463a8b200ce6ede94a2ba47b162adad161e6765e5cb5. 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/084406fa-ab93-494b-afa6-dc33a29d5db8.json and https://artists.proofprofile.net/proofs/artist/084406fa-ab93-494b-afa6-dc33a29d5db8.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 0x6b9ed34753844add5206de6709b95863f0be172a8b20eb5211380cff39311d10. 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/ARF470700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1342411c6dfe3d2829b576858ef955af9518317b9c0e38c456d6a747209828. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:18:05Z), 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/ARF470700054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5378a75c70a6678ecea2839f6754b3e32637b4c4e8bc50ba73b87c33d199e2dc. 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/ARF470700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223e70f604858020d3de4e712bfc30fbd52ec9556e68696f57781d9857852105. 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/ARF470700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5106777a33b792e945fc73a80884661c5aa6f7c9410cc80435a3b8684b6353a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:12:14Z), 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/ARF470700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457d237163e58fc854224b8f75c4c2abb2d571fa1f8b8e2ccde6cdac08d2a9ff. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/ARF470700059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1443a351a48a07a16d85743ce26ebce09761411f951e2306f005ca376d9bb1af. 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/ARF470700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337475b1956d1402a2bd7b2977163901a88deea372f40e2213b64c49e1e56fcd. 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/ARF470700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd6b772eaa958a952057b6b52c2d31c1270cb7650bb8436e431a5f07c4734f5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ARF470900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920dd6e056e521b6b35958c9f54d93e845fee93edfa3b3abaf0cb5da9df60b15. 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/ARF470900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a221939eadb5174f260189c5bb34e9980151c6a4d595bf08d7d7d49450f5d6. 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/ARF470900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0945d95b2dea0688bca25f7c7701d0b32952e76542a4370ea99c05212212402f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ARF470900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930a3eefb46d5331255cb7ddd77b0bb59b6768edb2defcb9e8be574e04ba2e8b. 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/ARF470900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfab3bff5944f4df66001f6586381288943ef815df7e8d1630e8e76bac4b8056. 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/ARF470900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd03afa1361546c225095d18134238c982078625f6c0749574a90f0779daa1d. 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/ARJ401100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dc111e0ba14403febf70d675281da940260f1a71e5870a408bd39eb98621a1. 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/ARJ401100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6918cd5ab3c2d83db0d8ba5a5cdca10f3be75d219bf357bdd1e10def2e14dc. 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/ARJ401400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86020f7a9fb5f59bdab188133b1759eab67d81c7a1a9c88f201f1b3b10362aeb. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:58:02Z), 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/ARJ401400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c572e8742b7ed0ece96f0874ac185aabe8ed40fbf4c6591aa63b7c3e637a7f. 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/ARJ401400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4301e160e3fae90ed020b7b94f656c1ccf9c13b86f108bb1d0155704549e52d. 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/ARJ401400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ea714c24fa27a82033f6d10623b553144b3499798ccb7e1ad0eeae36a02636. 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/ARJ401400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2657b26d1bd27973ec04c8945e0a027e92d699cd133b8691b1cc48e90154aa. 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/ARJ401400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be0046464eb9098579c69a3fd4aa30017e3a1d8f3b0dbf255e8e3b09c975b91. 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/ARJ401400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090e66b679309437da0994d15bd4ba4357b8078bd38f11b787e4e45dadec8233. 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/ARJ401400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d7eb422c960d9c897bb40e501ee45f7e2dc49cad6400ac4d7c5db5af250962. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:12:02Z), 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/ARJ401400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1533c60bbd516a9b81a0070e5c17b2fa786c79f7c801c1e1615b2b031f90b1. 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/ARJ401700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c1f06633bab210926112b587438331dde4f85739002faa5afd70ea0bb559c7. 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/ARJ401700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd68e74589018fc3c44109731e9afcb08095a4f389c50717f350706ec1abf566. 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/ARJ401700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65eddc3ec96ed7c822be56a89ffc3951806ea651cd42ade9790086ec4e9c7c8f. 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/ARJ401700052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a703395ccca2cd249a07870be37e340a4fe764d39370dd3352cb0078781c82b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARJ401700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be79fc59c4407aed5cfa1f2441b80009e4d16596340d0aa71459d8b6627e0d5. 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/ARJ401700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa716f86f9afd7d0d41012924985b94a01e0acd73f0b24ddaa24e3e496ce2bc17. 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/ARJ402000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208693e9e152b4def6fed22b70fe621c0e36cc930bddd9312f1ab63cdb86c124. 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/ARJ402000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c592dbcc37de4777ab2e39ee943a3f8090a3c8a7df74bf939658075b8b05f4. 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/ARJ402000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd19412eee7e9cd3c7b520bcec747927b8ca57406218cece1184a3367ca51afd. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:03:38Z), 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/ARJ402000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6aae806cd91537cb019cceb5e8a1af50a6bd5a77daf034a39c91cb278e51cf5. 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/ARJ402000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f08a925844b201a5170faf211b3a6c76daa6a72dd05217a700ef681843f47b. 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/ARJ402100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5549ba35b0283ba8ae23ee4ef38b8869194798c6470045a19fb380deffc2baed. 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/ARJ402100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f08a925844b201a5170faf211b3a6c76daa6a72dd05217a700ef681843f47b. 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/ARJ402100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5549ba35b0283ba8ae23ee4ef38b8869194798c6470045a19fb380deffc2baed. 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/ARJ402100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a9094e4118639e46148fe3e043542babfae5bff023d56cf20f262e726ad4a4. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:47:43Z), 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/ARJ402100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7e8ecfaaac4105458f48bba183a6defccc31decc58dd821cdba256240a9d64. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ARJ402100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fd1316a87408e9439ee32673279c90320fd96efe8754d92207b71043fe3107. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/ARJ402100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208693e9e152b4def6fed22b70fe621c0e36cc930bddd9312f1ab63cdb86c124. 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/ARJ402000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e4b908146325cb4d278eb46b3a9412ede8281072d1019db549e65af48a285c. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/ARF472300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68751030226c2b50f04c51759776118e88fe2440bb96b20327f856f49cd797fd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ARF472400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5ea6b6d4ad56ba0669fa8bd10c4d24c68450f0593a65cb3d8599ce17f813f0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ARF472300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e4b908146325cb4d278eb46b3a9412ede8281072d1019db549e65af48a285c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ARF472300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75884724261592a736061e2a77a23ec168ae10a837c6eb6bc21e1af8f33b9752. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:59Z), 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/ARF472400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c4ad0726ec48f45a2e11d294e4ab8ac65bec6466fbd8f2686afe2ce22a55fc. 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/ARF472400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ed276da779aa524149f1920a81e04f6e29c98a3768d4456c08198edcae0437. 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/ARF472400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d40c6f78e345e69cb2fceb52c38bc50ec5b6ace2cd807463b5fd2a8ab20faa7. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/ARF472400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed96b4fc7da001fefc2da0ffbaadaa5293724a2de9f16e037a476d39e268077. 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/ARF472400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f714632031d8e570b90ba6141cf07613a02b2e5fb1bab49874ee003af977ac. 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/ARF472400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28a79fcad2614342d0d77f56103b18010be77e97b8d8adda7b8d8252d2b6a3b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARF470900216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbca60ae54a21cb226a83a0755b602e0dcea328a1423283e077a7994d485913. 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/ARF470700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbca60ae54a21cb226a83a0755b602e0dcea328a1423283e077a7994d485913. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARF470700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39373ff121a41aa691d27a30d526dbdb4cf572f4feee0d11ce08993e1715618. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ARF470700050.
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