Dilermando dos Santos Reis (September 22, 1916 – January 2, 1977) was a Brazilian musician, composer and music teacher. He had former Brazilian president Juscelino Kubitschek's daughter as a student.
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 0xe1cff4111e158e422afee034e47643c47720fb5c607f7ff3e32bb24bb34fc31b. 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/a4f23fce-9f37-486b-ad8d-0bf88fff0e97.json and https://artists.proofprofile.net/proofs/artist/a4f23fce-9f37-486b-ad8d-0bf88fff0e97.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 0x02dff5154ac2c8627db4c0e5485f22da0bb832316870f6a77a3fb8f45c90f34d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRWMB9704491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43c0c91885fec46998b615c1bea92acc207dab81414f9ba68f566bf72fc96e3. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:40:09Z), 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/BRWMB9702481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56810f8a66c6cbc56effceccda7874c004c783f9a128799922cdfc7a0bda340d. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/BRWMB9702477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9d47d0328998b2f4ab2083db43b28ab7a7ee66704c02d9c61c0f5a67fbd200. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRWMB9702474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bd046f0510af45c10322662318ec7f99cb16fad3d9ad2fa31901978be10a58. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRWMB9702482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04427c7fad1798e38b66b9aaf3712a3de8439518f6999891a3da2527d2e72aca. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRWMB9804228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432507602b56fc108916837d038421ad44c897d4576069006fb2f179068d632c. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/BRWMB9702475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66dbb661858bd86a203852f182e288bbf425b5fc234fcbd3d96321945046e0d. 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/USESK1294191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8b6947642274bd80c07249f28994daf5ad1c90d3ae430e8834afe9cfb0935d. 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/USESK1294193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bffeb51c5829bb9ee6768601e2b47ce9d7b29b36a52a41050a9a2c52a09a72. 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/USESK1294194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8505b980f2d3b2bb1551ecdec2067925fe2c972275177e4c5e20ada0beab969e. 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/USESK1294195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc551caa9753e0e8143a748d8321a038b03e8866700889c27308ddbf9e42f1bb9. 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/USESK1294199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a16f76dc3359242aa68d6ef857d6d98e30835e87f605d666d9322076d548b04. 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/USESK1294200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3d0c14026bc5e82e4b11f5d762b39efc5bb5227b623fbba95ea2e294f9a750. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLY331806467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e9b720c6021c477b922144edcfe551216a7b90f6ba96e543859ee6fc384942. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/NLY331806474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a51cff962e774887887bf3a4a9dbdaba65be052f8f32f6eee8324f57d2168f5. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/NLY331806479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7762c356c2d830891317fd4b4e3285961f62f2130950354cec880384c1c62e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CA5KR2055520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39590a3355ca567c15992c1e7bba4d158908504e4683e486820470f5693a1d0d. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/CA5KR2055529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e7a67e8d950bd3684ffb06446d7ab08879bdbcf92182c7af375d9d142c9e23. 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/NLHR52105266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f515f52def128fc6f1dd9ae5b28faadd2bbbf71c91c9fcc977cd4420081fe8. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:52:12Z), 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/NLHR52105267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fd3f30bd7a6aeec53f640eac65af12a8ff71f08ac00bc55dec3b30823fd9d6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLHR52105269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ea560a2a0ac403f6a1138952fe57cc032c4c4a6cda3cb2e2f4dc1fa124c7d8. 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/CNUM71600024.
Pereira, Villa-Lobos, Reis & Others: Works for Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7927be58b651cc593af44c26b5ff5935361dcc04f4a03dddba8234791eff982. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:23:19Z), 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/HKI191944305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cddb09ede3365571b9e943073d6847dcf9663fc8e45850788ea011f5865f974. 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/HKI191944303.
Elegia: Virtuoso Guitar Music from Brasil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f756ab737c4252f229be56f3d8ea987c666ca500c65eb362ae68ee2d2072e4. 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/NLA460611073.