Ignaz Jakob Holzbauer (18 September 1711 – 7 April 1783) was an Austrian composer of symphonies, concertos, operas, and chamber music, and a member of the Mannheim school. His aesthetic style is in li
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 0xccd6068ada1475558e3dc7d1bbce4ec9b9cdeba7f5cf449e6a376f64362aaa5d. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fac49c07-4ce7-4359-b5d5-5f42402913f0.json and https://artists.proofprofile.net/proofs/artist/fac49c07-4ce7-4359-b5d5-5f42402913f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Symphony No. 55 in C Major: I. Allegro maestoso
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e70dfc9d5fc7e6465299109f99dbafac731deda828d0f68e31895573232fc67. 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/DEN962201771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3888a8ee785f256b142dcc7597fe5ee45d8658e58ac1c6bac47a5a8edda701. 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/DEN962201782.
Violin Concerto in F Major: III. Rondeau
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Sextet in B-Flat Major: I. Andante grazioso. Allegro
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Günther von Schwarzburg: Sinfonia in E-Flat Major
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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
Holzbauer: Günther von Schwarzburg (Recorded 1960)
Holzbauer: Günther von Schwarzburg (1960)
Giovanni Acciai Live at Bach-Akademie Stuttgart, 1991
Holzbauer, I.: Flute Concertos in D Major / E Minor / A Major / D Major
Ignaz Holzbauer: 3 Notturni & Quintett in G Major
Bach, JC: Quintet in D Major, Op. 11 No. 6: III. Allegro assai
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Lebrun, L.A.: Oboe Concerto No. 7 / Holzbauer, I.: Oboe Concerto in D Minor / Winter, P.: Oboe Concerto No. 2
Oboe Concerto No. 2 in F Major: II. Romance
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Oboe Concerto in C Major: II. Adagio poco andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c728856a45e78027c4dfecbecb0df6eea150b9072b6159e57e043b2012d7127. 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/CH1499508811.
2010 Texas Music Educators Association (TMEA): Richland High School Chorale & Sam Houston State University Chorale
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Mozart, Holzbauer & Pleyel: Sinfonia Concertante
Graun, Graupner & Holzbauer: Viola Concertos (Remastered 2024)
Mozart & Holzbauer: Works for Piano & Orchestra