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 0x8326df39dfb570c61a53479441cb0b0fde20c152961633c00421dec86a44d517. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5238f89f-2018-4225-8c91-4aba7282b412.json and https://artists.proofprofile.net/proofs/artist/5238f89f-2018-4225-8c91-4aba7282b412.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 0xc95c7aa3e4b9b1e656e811ceb4ea1440d57f3a918e0091f7dec6d482459d4314. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US7VG1318011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43e49d6f894de2dc29ffcd1c8a0446dbe7495b50d02b135710e63af6a2f1c0d. 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/US7VG1318012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d497d781afb12370b384e12cc0771369f57ba29884a0785883adb9f15438ccd. 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/US7VG1318013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe492229816e420684aad8b7f150426ab25e99b06be1c514225be19ba54a26e97. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US7VG1318016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad42b68db525d82fa5d9e069f7eba48ce706c7650b7e2f167e0ca2c83f330c6. 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/US7VG1318018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbd526182492c1aca29a5075fe0de1b619e2bf256061f191d1813ea2c2644b4. 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/US7VG1318020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b53391498f359543a81960fb9e7cc3bc470c938b6a13cf4ecc177e451c76729. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US7VG1318021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d4627a5c579c3ee363d51a173e6fd7ce2dd654a790e53a56566a19a7592198. 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/US7VG1318023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61daf290c82ce804d25c82237e80e0cf311535e6505f2adbb8ef191e34edc11e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US7VG1318025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84d4b03a1bedad5ba6209b75e9d04cc13f0703ad1eaac4a0439c99bce340eaa. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:59:31Z), 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/US7VG1318010.
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 0x65be58096fb3eb06e0efa9d008448b53a33c96d33e6ba98b80aa16484193c567. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1318014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca73b9afbd8558ef7d642f56a433ebd920749776278ba8719db020d5431dcbd. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/US7VG1318017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb567d91c032b8f96c611e71247a4414da03b785368859a84c28776ac3ea85a2. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1318019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3492ec56d3485865cc3ecd43f4480bbef196fbee946793d0296c066928ab06b. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/US7VG1318022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369f886082ddf0ef054d8ff5b6cab44dcb01e133351eb61e4ce2431b8ac5cc40. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US7VG1318024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a9caf3ae28929797f3a85985093acbd60930bf3c06d2b678ebeb7d39e2c26e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US7VG1318026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb067570fca3af40fa69fe6bf76360be9d3e3cd7e0963aac89e45f111ecfc4824. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US7VG1318027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737b54d0fc2c160980e6d40b644da9d4825566b8b827f17a81e2ad56bb04e39f. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/US7VG1318028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624676bfc774b1a65490dc3975ff9f0147453762617ef856e88dcb8e88ea980d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/US7VG1318029.
Hino da Irmandade Punk / Víctimas da Podridão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f66bd157e192281148bf69b90a0949853ef51b69c3f19b660e82ed71b42591. 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/QZNJX2343134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08e05d187d9037e9e1cb49fe7d3742dbb511d011c209e8b72ffcb7b8ff58a89. 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/QZNJX2343137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fe93adb5180cee2ca5a3d444b5cd9f1bf35cea8451e7f4ea4e10d10bc25b3a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJX2343139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f34f8ec3e9959d4bfe9503220141b78bbc1d5946b8ddf2c18b4ec850615e27f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJX2343144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c47fa49da3a888e037a7c1805aca77bb4784708c59944a0236c42671d139a86. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJX2343146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307078eeaf96ae7d85e8a0931750f8579843fc642f27294b731c517f4493230a. 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/QZNJX2343149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d176d24799b3390c3eb923a706cdb5cb2208f7997dc2e2a1e47ad02ef2dedb. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZNJX2343135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f17d81e7ef627e89107173951dfe372acc73b4a1d656d2e1b348a14daa6f59. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZNJX2343136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda50a6355a28990156f420910a468ea1171c3d7895501bb4616ad5e8b89fcd89. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZNJX2343138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb730986be342fa8c044e014679f7c83496ab636d8235f758c37dfa091a80b955. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZNJX2343140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1aee3308dff704d4e2893d2a0dc1496d7bd2c6b7bab032cd18163301d5b538. 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/QZNJX2343141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5328fb57b91b71b66407bce5c02d92ab4623af4387e620c8482eefbb03eb2cd3. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZNJX2343142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78145e80a5ceeb1657fa56685c6f8ddd4bedbfeb291d988ef6df190dceaed839. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZNJX2343143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4442178ceda4a5030610c63d0abcd43d5c1fd7b23644d277d4881537515368a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2343145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa6693491151b4e7610e37df26e86fabec7bc87d4e31292d9a4d681b382be88. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/QZNJX2343147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6d1050dab4c045be4f05c79c59151bb965075b359b05e9d7e562b9aac6b87d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZNJX2343148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2923ce2a1c32cc465346b0f286d47f65a44f3ad7d3e5b7bbf255b976c7d042d. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/QZNJX2343150.