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 0xafcaa99de9cb2aa9e980f4156614d494b1c49489b4e1c8a61fa15fe878403844. 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/805aaaea-e8a7-490f-8b55-ad3971b61a0c.json and https://artists.proofprofile.net/proofs/artist/805aaaea-e8a7-490f-8b55-ad3971b61a0c.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 0x582ca5b16140add70838e4dacedd13b8b0856d9e0353d0c7b235252b0d673c10. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDA72213007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea3f332cb284531f2406201061388b08c86a3647c3bdd955713a05cc79f4d2a. 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/QZHN32214714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c838f38c6c99cfa03b0bf0ab6de02554354643f48ba5b02eaa46bb557fe91e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2263410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667d6cccb600c1f6988488c9df72586da76eab5654c9f56e79fad46bff93c179. 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/QZK6F2283574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64758fcd3c1cc25b7449099c8d958b36204ad1b16eeed7a9e908adda07721b92. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:43Z), 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/QZMEN2290168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493ac8e6931b6309f1ef0f624692f347ee1feabd806a0dccbdafd2a11228ce9f. 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/QZNWS2257004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd22fa35c78fe8f90731c86bed3c00a4dc3e53b19dd88cf04ea1a5248fb44c82. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWW2266686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c6e8d9fa94599e95b142841ca8501cbf0483f25a64be75cfc81ba7b9560b46. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:39Z), 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/QZTAS2254014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073bc35c6fc14dfae7e69d57b55e6786a14a809245ea1be1d96add165d68ed45. 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/QZTB92213928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8324720b66f7adbf0c35c41d6571a8f0d7ccc5b6a1e326e9ea0100d2717f9aeb. 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/QZDA72377540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594a2458546747ea1f144bbe2c8ec19cc0a5ccf4f1248c616425722c708dfbd1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHN42357847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1176f405d291f1f9d71de93897d7010113857effd56c0f9258195d069454c1b7. 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/QZHN42357848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c9c9eb706c08d599c1e3f932a08544f8283b1cf7110d3cbc6ee55189b8c2c0. 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/QZHN42357849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadb67cc3098fcef5b637cc6e38ac873daca57e55b43b269d1814b9884a32b95. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZHN42357850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e166dd0bc7438bb548e2f997d009d77d9fc3f34b194a34e3bc04eb032ee287. 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/QZHN42357852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5984f26bf9ac550d70193974258f14246e34b77d5d04ab958c506886baec23f5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:46:41Z), 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/QZHNA2316159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf0394776dc658abf5b3e2caed6215740cdd56ab58bd53b8474de26a9305c5b. 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/QZK6M2374450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa57fff1a24037e67afe763b889598adedad58548afc66d9cf3873580371e63. 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/QZK6M2374451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a30a82056ba0522f711ef71fab9b5518ca410901382371549922a1bc27605a. 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/QZK6M2378321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947338a7f0c0ec1edf2229d966c4de6fcf87b75c66a4c770d9b2ac0de16e747f. 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/QZTB22340362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dee615b12160d738c257e2fb553ff331f7547ae14839244e598f54c8c1c94e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:12:44Z), 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/QZTB22340363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52caf09c1052de1b83e85d9768321bd2efc6196675f0c4103d590511a8f20dc1. 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/QZTB22340364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293eb93209164094e3f20c336a45e3080b6f7a9834ad07ed57ccba4d91ee5deb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:38:38Z), 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/QZTB22340365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7de5708529689f9d6349af75c24bf139f9a8ecc470478e7c3b0b4fffd1b584e. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZTB22340367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557110480b8679e8f2d9c9d7793206483e2b5bed378affb3bdb916fa127b2d28. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZTB22340368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8101a8b75b580f7e1ff08edc14021bc875d3dd214fbf8177e02bef33519efd7. 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/QZTB22340369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dad8bfb7992bb46b6ae411668d6c4f73470344f3df7931d6b8a276ac14cbdd. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZTB22340370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b450096f4e096fcbe8c557c5c7e153e835f98a53890180a11a03f31df137a1. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB22340372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f387a64de542e2760dc8bb7cda14dc033ae70450b6898f3313e21e2e6ae9198. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTB22340373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13e08ca4ea3e096019a0db008ece84979c875e98c8a9fe3ae72095df083d7bd. 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/QZWFE2329383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdd31f164b23b73591b27727aa57466779085d472c35c16d69800326221fb73. 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/QZWFE2329384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d82a29570eda1409da087ddfb5a67e0eb7401761c19215a6b0c3d87356f59fe. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:08:17Z), 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/QZWFP2383363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedaa533cebe072cb8e3f7ff042c0ac83ad26c824160f1c45b736dab3cdb73ecf. 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/QZFZ22441545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df951f74b7bb04c65fe236555cdfe7b14658db88baf674f785c468c4ab7b3cb. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZFYZ2471281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346cf6f1827a84ef794e559249f952e45220f8762378139fab1af3c786bceb4c. 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/QZDA52484412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f6b864b7268c51293fa44b635144e8ff312a507ea8a954c770dfc7b4fb732b. 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/QZHNC2473265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfb7922e05c1880a7f0a0b63752bbeb439be07e381e4cfeed7ea158419420f5. 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/QZNWW2433283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52202f5b97ac2c91de19f6d92e75562f08a303cc5176f5d8c373eb9776aafcf7. 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/QZNWW2466293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c372ae7db6fc830e3df95b8d88be297e45549714b232296ee53622871eef50. 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/QZTAT2489553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497275034fa0b1ba538d11a1646a3f9c60252fa902de030dbb66423049d16eab. 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/QZTAT2489554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16add7fc0b303db1fab76699ce7d8eadc3e9bb8a4f43846d2996e89437a8194. 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/QZTAZ2483631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ab667afef00befed3c7e37a251b8e1259232c5d257c457e50bb54ed54af975. 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/QZTB72491412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8119aba220db100e414061545295d4c5779c73eb4fc1a2367c8fbe929ebed657. 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/QZTB72491414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6257bb472054c334b9d6e2d8f8427bd231c1e01767f4e62deed4fafbfcdc47. 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/QZTB72491415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd34079563ae4158171b55d80dbc0ed939cda87cc53bd73449372af03fc16b09. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZTB72491416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a094cb9a863187edf27aa4bddb0684f80045ec3ee96ef6ceaa6e3eb1dc1812. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:04:20Z), 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/QZTB72491417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ff808fca01dc9c1710fa8f2eb06e4acfc5bd20f5f2e9b716e6deedb80948fc. 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/QZTB72491418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d96d4be0222fa286b17663147fa57528238945453252769fa820c17c7750b77. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:35:11Z), 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/QZTB72491419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a75cc4412c9468a371b8744d3eb6084469919e8ee9ae71cae26d6fd9199c4da. 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/QZTB72491421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361d107c163588b3970693b1f211be8f24c67bc749f067baf0a9654eac8eb036. 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/QZTB72491422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52202f5b97ac2c91de19f6d92e75562f08a303cc5176f5d8c373eb9776aafcf7. 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/QZNWW2466293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cffa3431edab1ce1f6f6579be04bfa864a75f0af21ca9f5048bdbdc68257b72. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:06:46Z), 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/QZTB72491423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea01616ccead35f40352a5b2f7b80dfc83ce67dedb61b2e2685e0b2af6fe927. 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/QZTB72491424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c73e9be3783ece837a6e24974f71780cd86629a9928896dc3c225e58587b9d. 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/QZTB72491425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204c44205c3415a4eca512ebdc2a66428dd37890b7e691331f9fb9daac39f992. 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/QZTB72491426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067b6c4467cc0a689a1197d79f56f9063fbb50336cbf64db2018187104b4e211. 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/QZTB72491427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11998d1791c736dc7811c4208cbc807f89b3da08e6c797db061a30af9be658f6. 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/QZTB72491428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41a8cfdadef3b5a4cbef90ef1a2eb82d567d188c68d541cb3af6fb45cb6a4f2. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:07:17Z), 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/QZTB72491429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cbfac2279fbc1168cd9f697aecb7ebf1436de220ab7bed15e08ba47ef59637. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZWFP2401104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f92dae6b2c67f260ee5a0e38919065202cdc0823294312c268f441143212701. 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/QZWFW2451446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f91d498dc5d95c716ecc1d5df4a54a2019a89d644056b0a2fd4f8e66194f14. 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/QZNWR2222446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a63fb3f3cc99ecb6fa3445180f9dc63ccd9a2df2838e2ecb0b3e29fd53912c7. 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/QZTAT2281400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba32a8e421a67d04592d82ebd7d8b6f3de6683de5ab6d64a65d311f47f02fbb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZTAS2343174.
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