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 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 0x802768f4ca4df4b4af634facd97413021286555373494e4af8eea0fa969a3c6b. 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/836fe042-2034-4336-b6c1-fda3ece1b619.json and https://artists.proofprofile.net/proofs/artist/836fe042-2034-4336-b6c1-fda3ece1b619.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x9b0d7ae4704472b546881a030b1f4c64b35c1813e23fac95ebc853018c7337c5. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2400049 — a six-check JSON result.
Ogum partiu pra guerra / Presente dos Orixás
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d908acb97e59b32ce2a18c4fd3c2fd8eb00517e6cd4e233eb912bebe647d1b0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500301 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2ea79b68a4ec1ad03de64c169e6648c67bff949eb3c0232ca69950077f40c0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500303 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57e46c75639e234d9b8ece3cf77fb66b7d03944c94cbe1d85c793282da73b0c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500573 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fb2dd7bb67fea06e0ccf4754e896c85c822e835c788cb805acd1638a269b2d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500575 — a six-check JSON result.
Macumba sem Exú, não existe / Capa e cartola preta / Mara Mara Marabô / Laroyê povo de guerra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713d637461f9b31fadb2627b5862040548db385ed1e4fc8bcf3afe805eeaa857. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500578 — a six-check JSON result.
Arreda homem que ai vem mulher / Pra ser rainha / Mulher mulher se ela é Tata mironguê / Ela é Maria, Maria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacd5c279901dc7b097285d2dcacce20a0edb008f4b356786918ad0febf2c4cd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500579 — a six-check JSON result.
Amor de Rosa Negra / Deu meia noite mas também deu meio dia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ace99014ea1a8368ff14f848414d849fe4b874de00d782359cc32fd80d52c78. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500580 — a six-check JSON result.
Madrugada / Cavuca murundu / Chora violino, chora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d816d8a90df3267bf2a5610ba5147850e5d0fad0e9063e3a30288b2a16131d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500581 — a six-check JSON result.
Apaga a luz, acende a vela / Pode me chamar de covarde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ebda2758db03b4cd208e1147e0f9964f6cdec56f35752d75b385c536771fb3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500582 — a six-check JSON result.
Não Mexa Com Ela / Ponto de Maria Navalha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b570c3c4ec0433297cd9c1ac0d1542134ef40c3c316091ad04db6a2bd93c595. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500583 — a six-check JSON result.
Eita eita eita mas que coisa medonha danada / Santo Antônio Pequenino (Rodeia) / Maria Mulambo ela é fiel / Ela É Mojubá / Santo Antônio Pequenino / A Catacumba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac454362ff42821b7f38f1ecfe785b8263476ec5cc097da0900d8a03cb312ed8. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500584 — a six-check JSON result.
Vocês estão vendo aquela casa pequenina / Joga A Chave / Dói, Dói, Dói / Sentimento verdadeiro / Pegaram Zé Pilintra lá o morro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ee3d7c5fd24784ca4cfb7a51c75fa6ea5bfa62ba6a1bee026ef049c2b19800. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500585 — a six-check JSON result.
Tata Caveira / Ô luar, ô luar / Eu amei alguém / Aê aê calunga eu já abri meu casuá / Maria Mulambo ela corre gira, ninguém vê / Na mesa de um bar / Quem nunca teve um pesadelo essa noite vai sonhar com Tiriri / Exú Não Brinca, Exú Não É de Brincadeira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11de718e2f7df283aee02e2908598c6146e4ff00e81451d29808253368576aa7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500586 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da52d7f9be065813aa7766ecdf3bbcb0700027e72744629eb5d7026ddd10dc4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500587 — a six-check JSON result.
Ao Vivo no Quintal dos Orixás Carapicuíba
Amarra os Inimigos e Dá um Nó / Bate Palmas Pra Coroa de Xangô / Ogum na guerra / Ogum e a sereia bradavam na beira do mar / Presente dos Orixás / Iansã e Iemanjá / Ela é Oyá / Ventou mas que ventania / Oya Matamba de kakoroká zingue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60841b106a2ee6440a91581ec05c284b7f6d4f83abd89f7ebf416a67a45cbf0d. Chain 2 (Bitcoin): anchored in block 958045 (2026-07-14T18:53:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500660 — a six-check JSON result.
Canto Para Oxum (Oro Mi Maió) / Eu Vi Mamãe Oxum Na Cachoeira / Eu fui pra matar caçar / Caboclo Atirou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6576f488b7e86bc61c1da6bcf3223e2ef44130d77d44dc350aca77c72ad3476. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500661 — a six-check JSON result.
Jurema / Vestimenta de caboclo / Eu só vim aqui porque fui chamado / Capitão do Mato / É uma sapê, barro molhado / Acendi uma vela por de trás da bananeira / Dona da casa, a casa é sua / Samba de Caboclo É Viola e Ganzá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c74b08fd91fe3bcaac6bf8cb6cb8c54fb5e98aa1a5c2687c927f10fcfd52fd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500662 — a six-check JSON result.
Um navegador / Marinheiro só / Adeus camarada - ponto de marinheiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42dfcfb5d6e663b3e4de6bb0d119c50ed92839f12d8529b6af761cee6777c2c. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500663 — a six-check JSON result.
Na casa de Exu / A sua casa não tem parede / Mulambo vem agora / Caminho escuro de Mulambo / Há quanto tempo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f82c61cb4489ebf6cdb13cdfa6c134171c249de19ff004971c5222fe3c0888. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500664 — a six-check JSON result.
Bate Palma Sereia do Mar / Alegria das crianças
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fe18ca1e92d735a273be8eb3e033736bbb334acb506d8a72c510177b92e507. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500564 — a six-check JSON result.
Flechinha de Odé / No Arco-íris / Cosme e Damião colhendo as rosas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7defcd309baf63b3f5f0e6ea28334315d5174a90e4ec7a666da2be9b0b1c473. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500565 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5da75cf0a886c5f6ffe1ad28417c7c0063b3bc3fb202f168c97b4b40277adb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500566 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f989a7a2647619a5d31c0063635c7d3c5036c87b58b4ddfbe7f01bf627bc24. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500567 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49d2ed5e030cc50bbdb991415035391b3ef54d05557e7b9ae37d8de63fb59c0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500568 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ee14baeb6472e603ab6ce839b27788fefb27dd3b32e24bb04404a1d277742e. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500571 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57e46c75639e234d9b8ece3cf77fb66b7d03944c94cbe1d85c793282da73b0c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500573 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93561176cf0f07ac1a8757893d2251295a7e8f3d0e0f65c739c5e5ae5cc5e3b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500574 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fb2dd7bb67fea06e0ccf4754e896c85c822e835c788cb805acd1638a269b2d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500575 — a six-check JSON result.
Luz na Madrugada / Padilha to lhe chamando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9e4782935b84550030312ca0583358776e5e95c980a4f707623efc3c1760e1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKORX2500576 — a six-check JSON result.