Peter Schmalfuss (13 January 1937 – 23 October 2008) was a German classical pianist born in Berlin, Germany. He studied with Walter Gieseking, Adrian Aeschbacher and, at the Beethoven-Class Positano,
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 0x6a907a68e0572d9a1c0d9cc62c6cfb43182746555733dad14f9cf602c1dc176d. 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/d1fe3992-af02-4471-80d8-3a4d65aff35c.json and https://artists.proofprofile.net/proofs/artist/d1fe3992-af02-4471-80d8-3a4d65aff35c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Blue Edition - Schumann: Kinderszenen & Overture, Scherzo and Finale for Orchestra
Green Edition - Tchaikovsky: The Seasons No. 9-12 & Dumka "Russian Rustic Scene"
Classical Masterpieces - Claude Debussy: Suite Bergamasque & Le roi Lear
Red Edition - Debussy: Children's Corner, L. 113 & La boîte à joujoux, L. 128
Red Edition - Debussy: Children's Corner, L. 113 & Jeux, poème dansé, L. 126
Green Edition - Debussy: Valse romantique, L. 71 & Nocturnes, L. 91
Green Edition - Debussy: Nocturnes, L. 91 & Sonata for Flute, Viola and Harp
Green Edition - Debussy: Nocturne, L. 82 & Children's Corner, L. 113
Green Edition - Debussy: Images pour orchestre No. 3, L. 122 & Deux arabesques, L. 66
Blue Edition - Debussy: Children's Corner & Khamma "Légende dansée"
Classical Selection - Debussy: String Quartet & Suite bergamasque
Yellow Edition - Mozart: Rondo No. 3, K. 511 & Violin Concerto No. 3, K. 216
Grey Edition - Mozart: Violin Concerto No. 3, K. 216 & Piano Concerto No. 20, K. 466
Grey Edition - Mozart: Piano Concerto No. 21, K. 467 & Violin Concerto No. 2, K. 211
Green Edition - Chopin: Mazurkas, Op. 24, 30 & Piano Sonata No. 3, Op. 58
Green Edition - Chopin: Deux Nocturnes, Op. 62 & Piano Sonata No. 3, Op. 58
Green Edition - Ravel & Debussy: La mer, L.109
Blue Edition - Ravel & Debussy: Rhapsodie espagnole, M. 54 & Suite bergamasque, L. 75
Yellow Edition - Mozart: Piano Concerto No. 27, K. 595 & Serenade No. 4, K. 203
Chopin - Liszt - Scriabine - Granados - Falla - Rachmaninoff - Romatic Piano Music Vol. 2
Chopin - Waltz No. 1 in E flat, Op. 18, "Grande Valse Brillante"
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 0x57ab0247ca17a4fe72a1572afe93649a0a1327c8b9765b802405235aeb1a218e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/US6PD2402011 — a six-check JSON result.
Robert Schumann - Fantasiestücke, Op. 12 - Symphonic Etudes - Fantasy Pieces Op. 73 - Carnaval Op. 9
Claude Debussy - String Quartet No. 1 - Suite Bergamasque - La Cathedrale Engloutie
Frédéric Chopin - World Famous Piano Music Vol. 3 - Waltzes, Complete Edition
Wolfgang Amadeus Mozart - Sonatas, Fantasy, Rondos
Solo Concerto No. 3 in D Minor, BWV 974: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa687e243bf2746fa8807ff463bdc3be0529553b74b49bc38afe8a24b32b2bc4c. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBQRF1004203 — a six-check JSON result.
Green Edition - Tchaikovsky: 12 Pieces, Op. 40 No. 2 & 6 Pieces, Op. 21 Nos. 1-6
Yellow Edition - Mozart: Rondo No. 1 & Piano Concertos Nos. 3, 4 & 21, K. 467
Yellow Edition - Mozart: Piano Concertos Nos. 1, 2 & 21 - Rondo No. 1, K. 485
Artist Edition - Peter Schmalfuss Plays Masterpieces of Frédéric Chopin
The Masterpieces - Beethoven: Piano Concerto No. 4 in G Major, Op. 58
Red Edition - Tchaikovsky: Symphony No. 1 "Winter Dreams" & The Seasons, Op. 37a
Red Edition - Tchaikovsky: Dumka "Russian Rustic Scene" & Symphony No. 1 "Winter Dreams"
Orange Edition - Tchaikovsky: The Seasons Nos. 8-12, Op. 37a & Suite from the Nutcracker, Op. 71a
Orange Edition - Tchaikovsky: Suite from the Sleeping Beauty & The Seasons Nos. 1 - 7, Op. 37a
Orange Edition - Tchaikovsky: Italian Capriccio, Op. 45 & The Seasons Nos. 8-12, Op. 37a
Yellow Edition - Tchaikovsky: Symphony No. 3 "Polish", Op. 29 & Dumka "Russian Rustic Scene"
Green Edition - Ravel & Debussy: Piano Concerto, M. 83 & La boîte à joujoux, L. 128
Waltzes, Op. 9a, D.365: No. 16 in A Major
The Classical Music featured in 'Little Women'
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Préludes, Op. 28: No. 15, Sostenuto in D-Flat Major "Raindrops"
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100 Most Relaxing Classical Music In The Universe
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dd0b369fb819630237f99c5b20355ccfa47b87eb57f69ec07fb02c735fea02. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL0714611 — a six-check JSON result.
Preludes, Op. 28 No. 15 In D-Flat Major "Raindrop" - Sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60ec795d71cbf8cb637de30b9efcfb690ce3a31dc9614c5147b5a3eec0c9ad0. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10813887 — a six-check JSON result.
Deux arabesques, L. 66: No. 1, Andantino con moto in E Major
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04720400af0bfa9c94e96614478f6f5e84e3e9e9a735501e0e6e9682661e6623. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL0710315 — a six-check JSON result.
Kinderszenen, Op. 15: I. Von fremden Ländern und Menschen
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Waltzes, Op. 9a, D.365: No. 6 in A-Flat Major
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Sonata in E-Flat Major for Clarinet and Piano, Op. 167: I. Allegretto
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