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 0xbac7958b569506bb98e164051923f4ca1ade5b115ab9b1b78329ef5e816c7406. 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/31992e26-9138-454c-9fef-8630d9e9c1a5.json and https://artists.proofprofile.net/proofs/artist/31992e26-9138-454c-9fef-8630d9e9c1a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sambas de Enredo: Carnaval SP 2022, Especial, Acesso e Acesso II
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 0xc0fd9ce8d5a12d958987ed7077573062e0dcfabf16afa8fdb976f11211744181. 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/BRLIE2100011.
A Saliva do Santo e o Veneno da Serpente
Sambas de Enredo Carnaval de São Paulo 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14a566048863d87c88543aaf6a59f3275dde5b7ea14638502214d6cba5b6d0a. 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/BRLIE1800007.
Um não sei quê, que nasce não sei onde, vem não sei como e explode não sei porquê...
Sambas de Enredo Carnaval São Paulo 2020
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed06aada61b2d1882d5986df3829efe55fa010a64b5cb85037dce625c2ce6200. 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/BRLIE1900009.
Grêmio Gaviões da Fiel Torcida - a Saliva do Santo e o Veneno da Serpente - Ao vivo
Carnaval SP 2019 - Sambas de Enredo das Escolas de Samba de São Paulo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14a566048863d87c88543aaf6a59f3275dde5b7ea14638502214d6cba5b6d0a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRLIE1800007.
Sambas de Enredo: Carnaval SP 2020, Especial e Acesso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed06aada61b2d1882d5986df3829efe55fa010a64b5cb85037dce625c2ce6200. 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/BRLIE1900009.
Guarus – Na Aurora da criação a profecia Tupi... prosperidade e paz os Mensageiros de Rudá
Sambas de Enredo Carnaval de São Paulo 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c02de964af0e83c69a90d41df6897764cd3d9beca74b8cd4790bf037ffa4341. 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/BRLIE1700009.
Sambas Enredo das Campeãs - Liga Carnaval SP 1987 a 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6020968cb38ab755f304f8d699176b731830de682c145192475f61ab84ce96c8. 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/BR03D2200744.