Ana Flávia Castela (born 16 November 2003), also known as the Boiadeira, is a Brazilian singer-songwriter. She is recognized as one of the disseminators of agronejo music in Brazil. Biography Born in
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 0xc013a24553ac1f05d57994158d1b1e16da7ba1491fbe1cbcbf8cd181671db5ab. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20b5334f-75fa-4cab-81db-400b8275c84a.json and https://artists.proofprofile.net/proofs/artist/20b5334f-75fa-4cab-81db-400b8275c84a.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 0x43de37e2e88b9cad807194a34d1edd718f30933cf746366e5cdf6390e71cc036. 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/BR27R2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddbc52f59672adfaa7b4b3669af22efe1c08b8e988ef5fb2400ecad2860aabe. 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/BX3022300043.
Fronteira: Boiadeira Internacional (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f951bc77599a7b81a553d682c67ec1fcc7fba5bf79b5f149a200a2975327fb. 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/BKA7Y2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf918b83c714637e9ea62a7bc474823bd74e7608df00a690689f2a761ef671a4d. 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/BKA7Y2300004.
Solteiro Forçado (Boiadeira Internacional)
Solteiro Forçado - Boiadeira Internacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652ec527bcd8951712264fa2a4e58989865354a85db9b32a9275fe120345a2d3. 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/BX3022300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf70374bd67bd1f16cc350ec0e37609c328a8776d18ba254e37b8104bd2724a1. 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/BCVV82300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da2598fe450975ce2f5a42811601f6a0f1c124c3b6266ed49e814b0f1b49250. 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/BKA7Y2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1d578904d813706cc28e445dfc90cf0c5921db1faa67f0f43e1c7b2dd52df6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKA7Y2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bab2e599cd3ab69d187328b411ac89866d169b101b20c2773aee9728e38c64a. 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/BRSME2400249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddbc52f59672adfaa7b4b3669af22efe1c08b8e988ef5fb2400ecad2860aabe. 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/BX3022300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad59aef49bebf0b0f57031f7cc596705175f75136b45a878fa6a9f2a5a3b9bc1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKA7Y2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e1eef01bd670b2c499a2aba36b16c30ba1054f4bf46503f79e78a6da3dc0ed. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKA7Y2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9a3e06c09b668bb487b230e1d9eb5d4d0d6ab4c9c0713973df864cb46c6308. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKA7Y2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f6005a031be199b1bfa26fb41e87bcf6cecdecf1f1385c5b9f540e525a6679. 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/BKA7Y2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cb1f9cb4e61c4387ab2c8be45f34636ebc89f139750ac22484aec9c2449312. 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/BKA7Y2300034.
Combo do Perigo - Fazendinha Sessions #3 (Remix)
Combo do Perigo - Fazendinha Sessions #3 - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2c5c63d6c9c34e4fb350042314eabacdccbe9089f7ad61fc8d2bf995fd7659. 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/BKFZH2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277b385e96bf846512ba09ca879d1f3e7acaef7dacbcc12b5cabc26059280b13. 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/BKA7Y2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cf0407719ece37ae8a297088bf33a6dc416c62c3d475d7d5ea5c550e4b00d3. 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/BKA7Y2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5c5d9f664d0dbc8ccc8e2b1b7b2b4eac5bbaca4d5717b707080818296dc876. 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/BKA7Y2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb91cd9068dc34702e05cd3600f6bb0ab5c71f07a2972b8657701575fc667057. 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/BKA7Y2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd553d2b1c1a043c73e507abdf50838b56f908ea33eef30962a36e9d926abc8b0. 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/BKA7Y2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4803b7d298e6baafeb5d316f5b25a6b048aef4103ab47576e8981a93ea9ffcc6. 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/BKA7Y2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a72888dbbd490d12f46366d1b51ec072be1baf55e19846fb139eab5439b3a0f. 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/BKA7Y2400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93ecd70b35af8c30f3da1ede02f52328bf50c7962189e71bbc5a8cfb1bc1566. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKA7Y2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf96799383f9ffc690b75fe564d868bfdcad44683c02886035cfd7de0892a724. 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/BKA7Y2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6933c53c2ba089bef05d9f48fe28138aa581044d042278afe4572f000ad589. 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/BKA7Y2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb593251647b9dceaf0366e76c55191eaec66d68b0dfb407544798c84b5a2a961. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKA7Y2400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b2d7587812dad5971e57117abf9de5a5459c4ee946d6616395792a47601ffd. 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/BKA7Y2400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad735e8f406c786d6cc2d0367c6ab40f46248201383c4c2df9597b8220454063. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKA7Y2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739159086f170e7b1d974fd0173aca9972be5144f7df2c4a9bcce080bac9c0f2. 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/BCA6L2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d93d64fd63f631c2a204483b865ee7098a30b07b74e61d354e1c1a18d096658. 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/BX3022300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47497cea402cbe263c767ea34926d558376df34958710ddb62cf817ba21de64. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX3022300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5f53462fdddf27af767c3e78a1be62daf4ba91d5cc7fd058cd3643ea2968f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCA6L2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246689ba4895e1fbf7908cf5c2a4ffb7129bfcaa61c1c4635e348529536b236e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX3022300003.