Eduardo Nascimento Costa (born 23 September 1982), known as Eduardo Costa, is a Brazilian professional football coach and former player who played as a defensive midfielder. He is the current head coa
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 0xc71866749111f6436e4ad37804ba8dc1424d70e555d7bedf8e67b8b3d479217a. 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/cc0076a9-c0b1-457d-b051-c23909b8a9b6.json and https://artists.proofprofile.net/proofs/artist/cc0076a9-c0b1-457d-b051-c23909b8a9b6.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 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 0xacc81a5081e10f002ebe69f3f48900f7a4c80a1385b7d38274c76518f130aecf. 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/BXEC12100001.
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 0xb95fa7248a40a6e7b9cbfc57a8362870b8eb87ae2b78d41a0d9bf0ca08a31dbe. 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/US7VG1860531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac3963f9bd6bb81c19a0a6899d2502c8dc5d828c0bee51653587e325ebeac0f. 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/BRAPI0601589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58501e35790c974ba9261ae0413b4c455185a7274e43a1208da2096e737b2be. 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/BRAPI0601590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7b76e141ea4b0be0a9a11ef1c8111d08867ccd6a32a3346fe84589bcb67644. 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/US7VG1781973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b3d1a1fb00240f9f9f822ca4f3ca0dee2666629095566114ffab2392d98810. 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/BRAPI0501102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca1a1e43e5ee0878f225fc2e179a1f0367193e3305479ffa62150b437ae4ca3. 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/BRK2L2100016.
As Melhores Sertanejas Águia Music, Vol. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba3af683b57d8496f23efdc3ca01d6d8a196aa3762008d524f6020ef83c7fc6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7VG1654713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355625652d6c33bdeac3c004df6227dddf4c57b704bcb54ae297c2604d3cc853. 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/BXMPM1600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88535ed77657761d694954df86104ccfd1f5366771b08106718d0ed68ee7c1ea. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/BR1841400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4d356732e9a5788fe17a2ce9f439f4da5422efc2fd9d19b85bec5073caf928. 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/BC7IP2300024.
Os Cachaceiros Também Amam (Ao Vivo em Londrina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e18415ac73652e046d66deea4307d02fe22bedef607b2e0ed7e47efa017c47. 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/BRQYB1600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457a3cfd2ff6e94cdb4a6a0d7756047c1e1ea4ce96d7b62c4a60f19c8cd142cd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRUM70700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7217067cb63c7101311edbbc22de2c6f03d0feecd83489ff37bb33f4fd3a5b43. 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/BRAPI0601593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7413f2130eb64e540624d3769c940a44a3492fa2e700e491fb0ff2e9db457cb1. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QZGLM1968641.