Ewald Demeyere (born 1974) is a Belgian harpsichordist, conductor and music theorist. He is known as an expert in partimento realization and counterpoint.On Fedele Fenaroli’s Pedagogy: An Update (in:
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 0x87a7774e73059e6467456794dd1c1064891c49ca8108c90358dcb707ae61c16b. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92d43f0d-12f0-4ba5-9f24-dc36ef49caf1.json and https://artists.proofprofile.net/proofs/artist/92d43f0d-12f0-4ba5-9f24-dc36ef49caf1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Handel: The Complete Solo Sonatas for Wind Instruments
Flute Sonata in B Minor, Op. 1 No. 9, HWV 367b: VI. Andante
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 0xce19403011c4526dd945cfff418dffcc6c985e4e02a7aae80e72fa6c88d1e744. 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/DECP61502015.
Bach, J.S.: Flute Sonata, Bwv 1034 / Bach, C.P.E.: Flute Sonata, Wq. 131, H. 561 / Mozart, W.A.: Flute Quartet No. 1
Kirnberger: Works for Flute & Harpsichord
Telemann: Les Nations - Ouvertures & Oboe Concerti
Ouverture des Nations anciens et modernes in G Major, TWV 55: G4: II. Menuet 1 & 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30e33f9ffa632e1b139ce23f091b19673ee47252f5972c8c98e8c7f3ad6a67c. 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/NLB151400702.
Ouverture des Nations anciens et modernes in G Major, TWV 55: G4: I. Ouverture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a871b1aeb2092b4fd151da1821ebf80122e607519f2251a18f1bf22f2d8417. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLB151400701.
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
Tears - Harpsichord Laments from the 17th-Century
Telemann: Overtures - Du angenehmer Weiberorden - Trauer-Music eines kunsterfahrenen
Bach, J.B.: Overtures / Telemann, G.P.: Overtures, Twv 55:E2, Twv 55:E10, Twv 55:F14
Fiocco, J.H.: 24 Pieces De Clavecin, Suites Nos. 1 and 2
Haydn, J.: Keyboard Concerto in G Major / Divertimento in F Major / Harpsichord Concerto in F Major
Bach, J.S.: Keyboard Music (The Young Virtuoso)
Bach, W.F.: Keyboard Sonatas, F. 4, 8 and 9 / 8 Fugues
6 Sonates mêlées de pièces, Op. 2: Flute Sonata No. 2 in D Minor, "La Vibray": V. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e439fa3b924576cc04e35b79c689efd15cc92a9fc56a858945a4b3dd4d6d38. 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/DECP60303006.
Troisieme Livre de Sonates, Op. 3: Flute Sonata No. 2 in B Minor: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46e3c68ee466490e90f667258ec05f381519285b58f1857836b6aef9cca8ec8. 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/DECP60303018.
Serenade in B-Flat Major "Gran Partita", K. 361/370a: Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a98486cc3f94a678f368ec200d58740e7bfec206a499e370cd2150ad63bbf04. 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/NLB151600114.
Deuxieme suite de pieces a 2 dessus, Op. 6: IV. Musette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c3224ce45a74c5d393d67f5fbbc20a363d54f05e730b264f2fb2dee2f723ca. 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/DECP60105008.
Deuxieme suite de pieces a 2 dessus, Op. 6: VII. Contrefaiseurs
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Chamber Music - Handel, G. / Vivaldi, A.