Nei Braz Lopes (born May 9, 1942 in Irajá, Rio de Janeiro) is a Brazilian singer, composer, lawyer, writer and historian, specializing in Afro-Brazilian studies. Biography Born in Irajá in Rio de Jan
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 0x3b49180b4b8192ca68f2c4c1b27ba4e39412b14645acc8cc02f393cce91ccf06. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/990db1cd-44e1-4fc7-b78c-c1913770fa04.json and https://artists.proofprofile.net/proofs/artist/990db1cd-44e1-4fc7-b78c-c1913770fa04.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 0xb82cf3c75f3c1e758e77503ab71b5d345f294351075f1fc0ea04472b54fde4fa. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/BRUME0400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321421a68a4e921e4b627285c20867db02754b1764f13075278261dd598f9775. 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/BRVLS0000129.
Goiabada Cascão / Coisa Antiga / Tempo de Don Don
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1004e7443509856b6f7feb0272a0d9143db5919aae8cbe95c8a11164d4e4412a. 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/BRVLS0000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb146a1c242841446568ede3521263a9437911aaa3417b1c579bc92cec07629. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRVLS0000131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9736d15a151378196685384ff4f3bf397173d60c070cd5c638b247b7202e6fd3. 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/BRVLS0000132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442f96a9b08ec24b9e232e85215b77f271d2e4a8939c688985e9957c50189f40. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRVLS0000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a511fd3cd8ad4983e6ff64ccd5e97709ea99714fc15751be473375327726913. 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/BRVLS0000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6260a3d62a9f3351d0038d294425c7c607ae70e8ff767ba92daa8ae48b0bc14. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRVLS0000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91b799f4deffb06cce226c9a3e71a741de68e2ac7976e62e764ede8ad8d3b4d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BRVLS0000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44803d9cdb62a0477a56b8163de3737b388266b8cdfc74c0072c3c9728b8b62. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRVLS0000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe9745359130e5cbd5b04fa9e5e7d83cb1bb7086e0b09ada4448b0bfc6a9f80. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BRVLS0000134.
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 0xd2cc7cd5a6060e2d1f44359f3fe0f38bd09276e1d3461785ef36ff7a2d511dec. 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/BRVLS0000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1aa54cd89070c0f940c099beb8fa26edf612dfe35a998bcdd5a35074d900bf1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRVLS0000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0a5d044f827c9bae219e5f5e7b493c0729943842eab59ff37f913b2e82d68f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRVLS0000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4967646489e45276379199bbc2f04546ba6dbde61bf6cc5f6df1525a1ee3f4bc. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BRVLS0000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d572e17693155c6da17639e1b1da38ab0a313b3d34ce88bf7779e2c3c23c515. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BRVLS0000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b3ffc0d061de975d9974f1237174fe728b25ff8762195e1b560a341d28ff4f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/BRZPT0300021.
Nei Lopes, Projeto Coisa Fina e Guga Stroeter no Pagode Black Tie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5753884ad269de53689c2912794f3bd99b0ba0bb51a9f7fb2e6b1afbb9983b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRGQC1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212b408882da37ab11ecb491930349df301bbaaa825e2a015b9d34abf9c44dfc. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/BRHXF2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097bd3c0b230d201f3833ea3ab4755dd213194cd8daf9f75f4778af113d84739. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRHXF2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe4316c741b3a4077a3aacce459960bc1f16658e697e4fe0001873d373e159c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRVEA0100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44803d9cdb62a0477a56b8163de3737b388266b8cdfc74c0072c3c9728b8b62. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRVLS0000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13214ca9e4c6c87fe2f6a2d1ade5007374fcdb9f7865c34db41c0ecc57402632. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRVLS9700569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf9041fe48b10a0112146d343b68113423162becd0578c73a20af040c1d0850. 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/BREMI0900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf9041fe48b10a0112146d343b68113423162becd0578c73a20af040c1d0850. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BREMI0900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe4316c741b3a4077a3aacce459960bc1f16658e697e4fe0001873d373e159c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRVEA0100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63a751a923663fdeac27db111923c7460806be6177dbb1e8ee1cd4001bff48a. 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/BRESM0400120.
Copacabana à Noite / Gosto Mais do Salgueiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2df2a2e6ab95d6c633d179923558ed8722b7d253924eabed0739c2f04d6eed6. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BXSVC2200284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fc1ca38b4ee73e54258fc9ac1dd76210be04761f91e90752999e5e115d79c5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRPUI2300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c04e7c33d2bad35978e55b64f8fed4bd0a7ef248b01868a9782f2458e1092e5. 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/BRDEP1500487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856b087a050c43300a7ceaedddb1d1a7eb2bb346c1112e0c8eee249d8e6bb8b5. 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/BRVLS9900551.