thumb|Fernando De Luca Fernando De Luca (born 1961 in Rome) is an Italian harpsichordist, organist, teacher and composer. Biography Fernando De Luca began his musical studies at a very young age,
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 0x3dd7c18cdce8dc637e99407c9a83e581d5e48bd30518691dcc1a59efbfb88209. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cab25df-8d63-4cd3-89db-9320257020f9.json and https://artists.proofprofile.net/proofs/artist/3cab25df-8d63-4cd3-89db-9320257020f9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
George Frideric Handel: Complete Harpsichord Music, Vol. 1
Johann Mattheson: Les Doits Parlans - Suites
Richard Jones: Suits or Setts of Lessons, London 1732
Handel: Complete Harpsichord Music, Vol. 3
Concerto in F Major, HWV 305: I. Ouverture
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 0x17e1f22cd1a40de3452267b04dd30a8b700278915ac664d33678a956c8d5dd4f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITLF52415694 — a six-check JSON result.
Concerto in F Major, HWV 305: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25513034d23ce948ef8727da2f0ff93b3dd0f4a8cc8297d5470add034f8aa582. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITLF52415695 — a six-check JSON result.
Concerto in F Major, HWV 305: III. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e79991b9a7ceac87bc7acd50ff7afe4185ee77cd52213eb05f8f2ed73e2758. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITLF52415696 — a six-check JSON result.
Concerto in F Major, HWV 305: IV. Marche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa833caba774c254c7eb576789480e00be0234406a7df608a16c9dcb8c9ec330c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITLF52415697 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fa03aeb91a1928ea92af9c89a5ce350c537bae32e61ab362fa2abb0ea6fc54. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITLF52415698 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20928a48fd41fbc562bb46f837c6f91484c5f679faa3dd3a8aa26a5c2a03b10b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITLF52415699 — a six-check JSON result.
Suite in G Minor, HWV 451: No. 1, Allemande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60401d4e4edc373fed49b4dc8f528e73f8ecf2d6cf6a1c81c12cc0901e92c9e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITLF52415700 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa548046a357fe2420d673fc41b38e6023a6572fd20cd411c6a81d2e6fedc3b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITLF52415702 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf718a62076053d8c9f1b8923d4def1f15f023c33cf48d2fc6a98b3222c2b0acf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITLF52415703 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4641c03ace08e746525d2b9fdbc58c61b42c90737e3345fa345a1316f6cdad99. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITLF52415706 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb0dc66e9ffb3a168d0e56a3670d5b7d6d1b390dc0bb4bda85743e9d041a730. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITLF52415708 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f44fa46911c18daf66725c31edc400bbe63a08fbe26e0a1fd27a3aeb22f3835. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITLF52415711 — a six-check JSON result.
Minuetta con (17) variazioni in B-Flat Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f3d24f3d5d1fb637d4f49132140dca5a74156b7c72c49175c79808e0e21a9d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332301581 — a six-check JSON result.
Beauvarlet-Charpentier: 1er livre de Pièces de Clavecin
George Friederic Handel: Complete Harpsichord Music, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2128a4bc6529c1c5b4c7b980773c33cb4e450ef954c154371d55cf317897e8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITLF52413776 — a six-check JSON result.
Jollage: Premier livre de Pièces de Clavecin
Keyboard Transcriptions. Vivaldi & Handel
Handel: Complete Preludes & Toccatas from the Bergamo Manuscript
Lully: Ouvertures - Chaumont: Pièces de Clavecin
Charles Burney: Selected Preludes, Fugues and Cornet Pieces
Jean-Philippe Rameau: Nouvelles Suites De Pièces De Clavecin (1728)
John Sheeles: Suites of Lessons for the Harpsichord or Spinnett, Book II (1730)
Charles Noblet - Nouvelles Suittes De Pieces De Clavecin (1757)
J.S. Bach - The Well-Tempered Clavier, Book 1
Charles Demars - Livre de Piéces de Clavecin
John Sheeles - Suites of Lessons for the Harpsichord or Spinnett (1725)
Handel: Complete Harpsichord Music Vol. 4