Joel Nascimento (Rio de Janeiro, October 13, 1937) is a Brazilian musician, mandolin player, and multi-instrumentalist. He toured with John McLaughin, Paco de Lucia, Raphael Rabello and Arthur Moreira
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 0xe9a21f83b23e6830809c529892a0bb404e503fc59ceffb056f27966b8fe65c0a. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c47d96f8-ca53-4cd4-90e7-fe37062b5988.json and https://artists.proofprofile.net/proofs/artist/c47d96f8-ca53-4cd4-90e7-fe37062b5988.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 0x090d5aeaff95154d42203142e9cbead233315b6dc29d07a07a59eaa5accefdf8. 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/BRKUA9607708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e006febf296afdfc27ddcd5f8b2d100cdce5ec9d5cba1371eb8e2ad6ba8b32. 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/BRKUA8904001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72522e199c893dd63008c5d404d66047219a0fe8fe3cfb4b35a0a01319f59755. 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/BRKUA8800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d96535f8dd5f5bb4c658928d04e21ff6a11bec1fba746fb7ec1bff2162d6f93. 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/BRKUA8800005.
Jacob do Bandolim 100 Anos Sentimento & Balanço
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529466a4f9e98a14113750253d3fa2d412a1bfdd2ef4d1a57b0bcb0541d8d33a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BXSVC1800500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579dacca666bc5dcf398183d3cdb6ebb55ccdc351e1fac457d32d04964c05f79. 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/BXSVC1800503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4f95cbbdaafdcd356aba0d14d2d9745122e4155ed8eb96cb380ec4b992e5f7. 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/BXSVC1800504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114040ce8466d35c950a31ebe7d47cf31d8e65a2aa21633e77f7ee59fe72fd0e. 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/BXSVC1800511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc0686eb25937ce07cfbb38b8524e75370c7ad757ea942ff0ac3d567b834cdc. 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/BRAPI0000093.
Choro Carioca Música do Brasil: Sudeste - Rio 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a27c12673a4c55bf82896cb17c14ef10f4a892cb6f95abdf331937d7f3a9f8. 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/BRRPL0600053.
Joaquim Callado: O Pai Dos Chorões, Vol. 1
Noites Cariocas (Os Maiores do Choro Ao Vivo No Municipal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e006febf296afdfc27ddcd5f8b2d100cdce5ec9d5cba1371eb8e2ad6ba8b32. 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/BRKUA8904001.
Chiquinha Gonzaga (Corta-Jaca) - Da: Suite Retratos - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6aad8c85ce6c51bd2adbfeef9b897ebaa0647055f2a431130aa4743fcb6313. 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/BRKUA8904006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6642f1707ba536354be75fd59d2291ad77848977114872dcbcb46c66f9d92612. 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/BRKUA8904008.
Chorando Baixinho - um Encontro Histórico (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf266ec9e764e591f9800b6fcdb2b2f7ea253743cdbc5308148c1747996e527. 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/BRKUA7900507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0081d0b14c35dd16bd1c88292ac133f77c6f0b53ce1a02b8f7f194b835167553. 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/BRKUA7900512.
Noites Cariocas (ao Vivo No Municipal) [Remasterizado | 2020 | Ao Vivo]
Noites Cariocas - Remasterizado | 2020 | Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e006febf296afdfc27ddcd5f8b2d100cdce5ec9d5cba1371eb8e2ad6ba8b32. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRKUA8904001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6301cfc3bedc304acbc5d9ee292ee6bf38e5d5fb2dfa9e3e4190383f244c3706. 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/BRKUA8700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052f68dd96686658f3dcca106292bfcc0002dce15dca8cf523c1937f3cf8ba37. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRKUA8700002.
Choro Carioca Música do Brasil: Nordeste - Rio 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e0b94f6be129f1ec6e79c128ced958dcb6fcf0f3c83a487f576d5c7ffe3ae4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRRPL0600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fec44934c07a4dc137532b3003be04c1cba27163a62c102144c53be0b98435. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/BRLG50800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40fb6cce2c759acf4549d0a9abbabfcd2bea0f5732970e3bca4fef627a8cb91. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRLG50800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a44717b7cc6676b16e30b9e1d1a028b375b398ef98157fab40f779033322f79. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRLG50800021.
Coração Vagabundo (feat. Leila Pinheiro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b36e03af753d7b770a10c78c916d77d7d752a5bb1af5ee2845c5f88ce3dc350. 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/BRLG50800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2460f123fdf9b28ce89b58d981afba760aecf8c1cfbb798efc40634c4dd3054. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRLG50800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45635e7bb08de0c68beb39df85e9d031c1c5e9c8b32f616f4f9f26ec784e1b5b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRLG50800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf17a8a93d94e0efa8ecf310be987c8d34b97bdce9bc133048c24a168be4f8c5. 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/BRLG50800027.
Choro Carioca Música do Brasil: Sul - Rio 1
Joaquim Callado: O Pai Dos Chorões, Vol. 3
Maria Teresa Madeira interpreta Joel Nascimento (Obras para Piano)