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 0x5af36d1abd93dbf02301fd8a6e869a52c082c90060bbea78d3ae0a04c5368eb2. 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/312a114c-75d7-482a-84bf-abe5441c3da5.json and https://artists.proofprofile.net/proofs/artist/312a114c-75d7-482a-84bf-abe5441c3da5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bruxa ou Fada? (feat. Vytor Senna & Dj Will DF)
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 0x91050b948812691d92eb02d211b19d5e8312cd359171ac038b853a16d6f291f4. 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/QZEQU2044845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af13914e69b0bf3f17d76900e87cfad830a1d12f600f7c47fc1ebfba64ac1fb. 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/QZEQU2044968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7b5943e74bfa1d174319d8a00a65e5bbb9a29f2e18db5eedbd1e6edf8ea7c6. 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/QZEQU2044971.
Senta Concentrada (feat. Mano Cheffe, Vytor Senna, Shevchenko e Elloco & Luka da Z.O)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f69bfb71392096e3e08aba7046c7cb7bc655261453c6c55c011aac29dc305bd. 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/QZEQU2045551.
Viciou na Flauta (feat. Reino, Chefe Coringa & Barca Na Batida)
A Chuva Cai Lá Fora (feat. Dj Will DF) [Brega Funk]
Aquecimento da Chacoalhada (feat. Alvaro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dee71b362bc76a218635f38fa9dd0d20fcda97cd4b5543fe76da04a071d52b1. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/BX9K42100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1def2862742f49f4bfff990bba79c02b8b7797e6fa4fed7f0fe4eedd92b9e0c. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/BX9K42100067.
Viciou na Flauta 2 (feat. Alê Oliveira) [Brega Funk]
Jeito Que Geme (feat. Barca Na Batida & MC Theuzyn) [Brega Funk]
MACETAH! (Versus Vol. 1) [feat. Tropkillaz]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a07dfd52eee79a1b791ea57d7c73232d554425addb1b2e6f2fd9c1ffdef7bc2. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:26Z), 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/QZEQU2206237.
Você Vai Levar uma Sentada (Brega Funk Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5e0d774eec072df0e0a5f747d39f9f9898b68a483463d66ec5c4b3e17f51e9. 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/BXG6R2200664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9674662ed1ee3edb284686e799e03247a71b971d366c3014fe08ff72150eecfd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXG6R2200785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb64dab319021c4beabe166aeca885e8a89b9a59e69fec7caf7811d7d85fe1cc. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/BXG6R2300192.
Versão Brasileira - Bloco: "Eu Não Quero, Mas Eu Vou" (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27b33fec7d72aa3502febd5bf5fe7dc1b5b62ba216dca96929338a9dbeda210. 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/BXG6R2300848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281efcd1a87977b088a2d960a29006ff7b2c42c2a9e3037577a70883cd4a58b1. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/BXG6R2300851.
Versão Brasileira - Bloco: "Não vale se apegar" (Ao Vivo)
Versão Brasileira - Bloco: "Quero Ver Se Tu É Braba"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc27f86f1f8085b603f059730806f9c2918ac697f2899268e1dc846ea2c4c2f. 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/BXG6R2300944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa29c5f11eb2c8238cd7261b8ddcc7b79b5c0f306d5b5a77d61ef7cecb763ca. 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/BXG6R2301039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d931e9ee55a65be1b4e2f24a54301db128fbd51356d285e7cd64ebff039784. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:52:58Z), 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/BKFUX2300891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4b97b40a7a44db73cf8c1e2139c0691730ecb54c823d3eb34a106fb2437ae4. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:06:51Z), 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/QZNJX2478268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd989fc31b5a5495187ed03e0d84cfb72efa0fee1dd2e16b4796398e16562cde6. 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/BXG6R2400436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57acc83dc3a318f0346ff6c1d0b757150586c226ff25277d41616f6785039ce0. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/BKFUX2301838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4c9a1a26f939798fd9dd276b3669e43011062cf701c9a2df48a8d120ed208f. 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/BKFUX2301731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61252c77adbff02a58c9932974357c55656b87731c69c1d2606d9a020a9628ed. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BKFUX2301682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24caaab66d2b933d0cb2ccec0c57268d922fedee02578655d21f673c91d5c42. 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/BKFUX2301866.
Quero Presente do Papai Noel Vs Dingo Bell Sou Seu Papai Noel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4107731901b78237e25a650e4faa08624421aa8c6603e34b15d8881efbab505a. 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/BKFUX2301719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf58d9b447b3b17312c3949b83287934eed26a37eac512c1f7c4877e4f73ef8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCM9B2402127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f287f4a8a044ced8093fbe9296a48bdd0a2a32923d76c46a0f4dde914f896f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:04Z), 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/BKNU22400368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8dd185ab0c8a92bd25de6411d5ade5f5c3508f13c8a15d1941b928033c55fe. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRSVB2401582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac59d82649071dbc4f5e511add90e93fbdad033b5252aa1265e4a670f0d52f4. 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/BK4DA2502921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8a573faa1688a3a5ff3a64db6ce91afa0f3db82788385d5dda2ae67b00c46c. 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/BK4442500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c3dc470bfa7331dcf3ae7f28612f9af3d3116f138f36a64f4c3833b22a3709. 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/BK7NM2500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6abff7657af016c13604e361bdafa156d4caba9262e26ba9fcb42854790b847. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:20Z), 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/BXG6R2500186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8e33ae9d64db015ed5b68445035d7b8f9ce5903c63e427b1ff670fd310066b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ESA112574188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fdece1eea9089e11cf58da70b19f7fcd2bc46071e1f7919c280d7edfdda23b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/BXG6R2500752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862699569ecbef9e01abba41ecdc4e82177cc9f29ab9512b39a3637afe04ab8e. 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/BXG6R2500767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24a730913082f150e57b86b116439d2401290e9264dc44fab0169bde261262f. 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/BRD1E2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24a730913082f150e57b86b116439d2401290e9264dc44fab0169bde261262f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRD1E2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5547493c7e5f0a34d8c0bb519d61e67904a22b1334aee204fc2e83537746cbf9. 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/BRUM72201230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce0122402e4a16cd585b35aeec5c576b22dabaa6918a79bb6488d638245e149. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRWMB2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c44a4b730f1b8f01f3774eb286e8eeace8764576c1cc634cf0b0f5f9df7b544. 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/BRHUX2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce0122402e4a16cd585b35aeec5c576b22dabaa6918a79bb6488d638245e149. 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/BRWMB2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce0122402e4a16cd585b35aeec5c576b22dabaa6918a79bb6488d638245e149. 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/BRWMB2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9727e3a7bbe01dc8db7cc7885d5ef085037327196b61dce7b702f7229f18c71. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BC5MF2200017.
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 0xa7d943a1edac753a8830152d3b182e9664ba868367de4db37206114b06401595. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BCAPW2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c81a09c3c66547adff7cc9fbc49284d2a026f845282806e1920da560c692a9. 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/BRWMB2300140.