Eros Ferreira Biondini (born 20 May 1971) is a veterinarian, Roman Catholic singer, presenter and Brazilian politician. Biography Eros Biondini was born in 1971 in Belo Horizonte, Minas Gerais. He ho
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 0x9ef81e1e6819e5157249fe682a897d8fc2d47b0f8fbcb1509d6d85b76d9b58cf. 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/38326160-9750-47ab-a386-4c2518e92e87.json and https://artists.proofprofile.net/proofs/artist/38326160-9750-47ab-a386-4c2518e92e87.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 0x020a7ece58699201adace6ddb8e91f2777646f38f75670513db14517a16ad214. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4TA2000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb08bd5bc910bfec0d506d068019ed61290f0eaa2cbbe4118743c27abf39c268. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:28:34Z), 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/USCGH1682020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71cad683a6800476ee049fcd6fe3301d79e5922b4522221455111577eda79c1. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:00:39Z), 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/USCGH1682021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806a35252375f4b3dd0a08422c37fc95db94d1e2c4616dd146deadf876431f6d. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USCGH1682024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d326883230fadd67611b890824f301b6762a05a6030600f1675e025e454922. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USCGH1682027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b877d199f398e8403fce9afa8ad6e0754b5374fd2164a16babe6261ca7428a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USCGH1682028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfb2f0c9e4647dcca715ad8e4d6d91a888f51ccb639615d517de9bed72c2d3a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BRFUJ1700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda116b089c98b5683311a12c09e7f3dd19f87faa462596cca9f1099c8ce1a3c0. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BRFUJ1700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bb34efbfe9f7954d65774f391cb98faf02ec4f74360d8f2d9dc43d3b023643. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BRFUJ1700072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1e77a9cc30c09d4005abea90547a2e3d27a73d96a71f1c39442d926f2f1a75. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRK2L1900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7110fe51d73a9eda0db01adcd01caf07dd86647cd3f76419bff744576b808c. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BRFU72000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed6e6b1d318b8617a9c53e8997658046d084decdfbbee7e2e25cc47c2f7e7a5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BCCON2112382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435fe3c7b37a340db42ed75da09068a2152437677cb0cd39a0e82deaf7e04682. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52d13f17f7920f99ef466145199e9cad836d508d093c12aa0a26e54c984ac7d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNJX2364338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa416f6c1028b545f867a492d6fdadd6099b67ecccccb8d1c069e37ae8cdb913. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:03:57Z), 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/BRFU72500122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13994af070de8d511f1ce2bd25fad4f6fa31e2e3d7d86bae3765c0fc6f333f5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BCFOI2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3856d75e55094fe3223724c37f51d65668fd811a5e725a42c1fd4c010f5c763f. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USCGH1645086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598525a6f25183c3a35743d54d4fceb13968f293e73dab6059fd22af79030f04. 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/USDY41651005.
A Esperança Entre Nós (feat. Lucimare, Eros Biondini, Salete, Adriana Arydes, Celina Borges, Ziza Fernandes & Walmir Alencar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f54f98997f634eadb13d61845e1dc2fe1741daa4f41f3eb31d5ba41370b37f. 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/BRSME1300604.
Brasil, Música e Devoção (feat. Lucimare, Eros Biondini, Salete, Adriana Arydes, Celina Borges, Ziza Fernandes, Walmir Alencar & Eugênio Jorge)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cad492acc0aaf5ed4f843ec8058e2b36bf786234957b89730747e3a99344221. 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/BRSME1300605.