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 0x09dcb462b5a7d38f264769a9d2d997780ab4a267d0a910239afe799e966732b3. 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/972b65b9-8a8d-49c8-a7ef-9185da7e875c.json and https://artists.proofprofile.net/proofs/artist/972b65b9-8a8d-49c8-a7ef-9185da7e875c.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 0x879b7f478fbdf9875c888e4cf146055f6ab41b79b8851aefea7aeb4a0905196c. 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/BR03D2401170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba24a82f9fb344e8888e18eac47932a38757d099883b11c201d2cf586572997f. 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/BR03D2401171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a002c69e8ce47d1bd2f3e433b9bdc8e67dde3260ae0c883678878ad6a3d962. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BR03D2401174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d03c8d804ba988c61733857d0e90da99b4fda5506a6cb0e376fe8956f2f4b62. 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/BR03D2401176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa833cf3fdc119d7668df0eebc0f4bb0f1d6a9e05e76b8c0c0aabdfb2e6c10c4. 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/BR03D2401178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7601bd0c6b6066c0534c519474d6557ca34919d2a6d5314f7d16c69eccad45c0. 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/BR03D2401180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfb6d4cb8cd1c5732d76aaba88f542ce8c0551429aa06db0573ca058ecc4e26. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/BR03D2401169.
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
Vai-Vai Minha Vida / Velha Guarda Essência do Saber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391d432e0906d45d050b147537ba645aef9cba017e6131ffc33ead16376a61e5. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/BR03D2401172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64173f580ffc25c482c07809082415ec6dd9fe50d1cd3ddb34cc4d341480b570. 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/BR03D2401175.
Pot Pourri Sambas Enredo: Acredite Se Quiser / Orum Aye O Eterno Amanhecer / Do Jeito Que A Gente Gosta / Volta Ao Mundo Em 80 Minutos / Amado Jorge / Nem Tudo Que Reluz É Ouro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe595ba3a8c2cefb7daa73f7d451d95c37d7e9005fadc9613cdd3c02b70b8f882. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BR03D2401177.
Passeando pelo Brasil o Samba Mostra o Que é Seu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17213db81f1924bbca0650623e08ef78efd30abf6cf4f51d754602bf7c1fcaed. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BR03D2401179.
Na Arca de Noel Quem Entrou Não Saiu Mais
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4b52046c49b07debe9e8b3fdc2ecd4cb6996eb57be46019bc74c41459a50a5. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BR03D2401181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7a3b0ab1acbf61927d21b7c680332070883cff0b2da8804dcd0af700258414. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/BR03D2200572.
Sambas de Enredo: Carnaval SP 2022, Especial, Acesso e Acesso II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc19854b45f3c6900c823c5c30155345835f7b9a131d87da5e58f80d3c06872. 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/BRLIE2100013.
Sambas de Enredo Carnaval de São Paulo 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad51b835ece29080f5c572526ab835643405652bd511d79ccd24981f3af294e. 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/BRLIE1800010.
Sambas de Enredo Carnaval São Paulo 2020
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e09e5452c42d548a0e5e4ca9d924fa2e8f8873f450078339719c6c07088d6f. 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/BRLIE1900016.
Sambas de Enredo: Carnaval SP 2020, Especial e Acesso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e09e5452c42d548a0e5e4ca9d924fa2e8f8873f450078339719c6c07088d6f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BRLIE1900016.
Sambas de Enredo Carnaval de São Paulo 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbd5a517a74e90b2b65f6ba1e38b91d09bf37251e7ca66d4baf31bf190a85a2. 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/BRLIE1700003.
Volta ao mundo em 80 minutos (A busca da Paz)
Sambas Enredo das Campeãs - Liga Carnaval SP 1987 a 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7582a4d0fe710f20e263c888101a5d0b8b1a94ff1f1329fb6b5679754be96ef1. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BR03D2300003.
Amado Jorge - A história de uma raça brasileira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb9de0c85abde698e1723d05b4014a458df47ff5cfb3b8f2c3d2f3370a254cc. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BR03D2300013.