Alberto Nepomuceno (July 6, 1864October 16, 1920) was a Brazilian composer and conductor. Career and music Nepomuceno was born in Fortaleza, the capital of the state of Ceará in Northeastern Brazil
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 0x7dd805ca1f9b47629042777f590bc3eee9149e8fd546ad50b0feef9d023e45d8. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/290c4733-5cbe-458b-a8fc-8c2e7ffbdc20.json and https://artists.proofprofile.net/proofs/artist/290c4733-5cbe-458b-a8fc-8c2e7ffbdc20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Women of Piano. Great Female Artists of the Golden Age
Idyll. Heritage Piano Music of Beethoven & Schumann
Fleurettes. Piano Essentials from the Golden Age
Obras-primas da música clássica brasileira
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 0x5c72dc144ecc37cc0323c046a12579f45c41a4d9a6ed029e482af9bbc578f9e0. 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/BRNIK1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67af21c3ccfc23ddc46ccb6b022f0a15f71bc94619339c5c8c5a6f8646542704. 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/BRNIK1500032.
Nepomuceno: Symphony in G Minor, O Garatuja Prelude & Série brasileira
Sinfonia em Sol Menor: Alberto Nepomuceno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b0960d684bf802aad668087080bc5881f7a42167332fdf57064c075d2c39eb. 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/DEN962000780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472afd2544c4bf2f8c25d0d818e641ec6945eb25d70d9aa6bcd4e1ab32ce9482. 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/DEN962000700.
Danzas cubanas: I. La tarde esta amorosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e39819d268904e8a90981eab83ff5a85c8ab3b6c8f3656c35b4b617580641d. 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/SEXMD9906103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9175ac3b6ac8b57ef221386912448a34fab6de05e475c85386947e7f07bb27. 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/SEXMD9906112.
Brasiliana: Three Centuries of Brazilian Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d9b5346482303de2ecf4ffee70ca41886b6bc69f5bd991ab6c63a5da0ebe0b. 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/SEAEL0021200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecbbc83c492ba52b659fa621d0598bc1b842821e5a365fa3976ba93aac27703. 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/ATMA40500565.
Orquestra Sinfônica do Estado de São Paulo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b14589a0ddeca7bc5516aa2f0521baaeca1fc9ab8ec4b64d960e2a66e88e45. 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/SEAEO1130120.
Serenata: Brazilian Music for Chamber Orchestra
Anthology of Classical Guitar Music, Vol. 4
Alma Brasileira: Panorama du piano brésilien du XXe siècle
Oswald, Saint-Saëns & Nepomuceno: Piano Works
Alberto Nepomuceno: Air from Suite Antique Op. 11, No. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73bf495600a6e2acd9c26af6a32d60648bae6387bdd017d80e6cda1ed4826f9. 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/HKI199413303.