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 0xfced66ddee7d38528b193249e3e7665a04e28d6b220ad35592c208398a8ec521. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba1ada44-c567-43ba-85ee-aab3f60f099c.json and https://artists.proofprofile.net/proofs/artist/ba1ada44-c567-43ba-85ee-aab3f60f099c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mascarada - Ao Vivo No Rio De Janeiro / 2012
Multishow Ao Vivo: 30 Anos - Vida Que Segue
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 0x36fecb696c935c915c685fb96e2ad45b2c80800997119de52699a4a286ca0872. 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/BRUM71300175.
O Sol Nascerá (Á Sorrir) - Ao Vivo No Rio De Janeiro / 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9751ee82b63b431e2ef339dc744116a3bbdf72ec950c13642e43d37dc8bb1796. 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/BRUM71300176.
Se Eu Errei / Eu Agora Sou Feliz - Ao Vivo No Rio De Janeiro / 2012 / Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef8b90d8e11849c788dc2b2cf4705ca6b5935f9849b7d8a0bc4d70a3cb29a08. 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/BRUM71300177.
Diz Que Fui Por Aí - Ao Vivo No Rio De Janeiro / 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d04748591fcb71550b6e976b8df973e3fe0160d8722a79f8b9fb7128150cca9. 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/BRUM71300178.
Escurinha / Escurinho - Ao Vivo No Rio De Janeiro / 2012 / Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aa914f917db41bba506d702bfcabcb4efc681fc3bbd3534d865b24625a3040. 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/BRUM71300179.
Madame - Ao Vivo No Rio De Janeiro / 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81553666c0c245134afe2d1677b014c53aced331d6dbc932b94e2f5be1c28437. 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/BRUM71300180.
Trem Das Onze - Ao Vivo No Rio De Janeiro / 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f5d9ab6d421cecc6b16b3c6769c13a5acf87a3f16a5ff0412da92408e825cd. 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/BRUM71300182.