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 0xff0bdff93a614e07a178a6e73254949ff9d61e0d38febdd81d4183d80302279e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/788cb1a3-7e49-49bb-922c-ce98f6b8cf5e.json and https://artists.proofprofile.net/proofs/artist/788cb1a3-7e49-49bb-922c-ce98f6b8cf5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
50 of the Best Classical Music: Schumann
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
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Kinderszenen, Op. 15: VII. Träumerei - Live
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Dichterliebe, Op. 48: I. Im wunderschönen Monat Mai
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Dichterliebe, Op. 48: III. Die Rose, die Lilie, die Taube, die Sonne
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Dichterliebe, Op. 48: VII. Ich grolle nicht
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Schubert & Burgmüller: Works for Arpeggione
Arpeggione Sonata in A Minor, D. 821: I. Allegro moderato
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Wa Yughani Alorgen (And the Organ Sings Alone)
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Shostakovich: Piano Concertos Nos. 1 & 2
Szymanowski: Complete Works for Violin and Piano
ブラームス：ヴァイオリン・ソナタ全集
Chopin: Transcriptions for Violin and Piano
Brahms: Sonatas For Clarinet And Piano, Op.120 No.1 & 2; Gestillte Sehnsucht, Op.91, No.1; Geistliches Wiegenlied, Op.91, No.2
Schumann: Piano Quintet / String Quartet No.1
Piano Quintet in E flat, Op. 44: 1. Allegro Brillante
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Piano Quintet in E flat, Op. 44: 2. In modo d'una marcia (Un poco largamente)
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Piano Quintet in E flat, Op. 44: 3. Scherzo (Molto vivace)
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Piano Quintet in E flat, Op. 44: 4. Allegro, ma non troppo
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Brahms: Piano Quintet in F Minor, Op. 34 / Schoenberg: Chamber Symphony No. 1, Op. 9
Piano Quintet in F Minor, Op. 34: I. Allegro non troppo
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Piano Quintet in F Minor, Op. 34: III. Scherzo. Allegro
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Piano Quintet in F minor, Op. 34: IV. Finale. Poco sostenuto - Allegro non troppo
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Schumann, R.: Kreisleriana / Waldszenen / Blumenstuck
"Argerich Plays" - Chopin, Mozart & Beethoven
Piano Sonata No. 18 in D Major, K. 576: I. Allegro
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Piano Sonata No. 18 in D Major, K. 576: II. Adagio
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Piano Sonata No. 18 in D Major, K. 576: III. Allegretto
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Piano Sonata No. 7 in D Major, Op. 10 No. 3: I. Presto
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Piano Sonata No. 7 in D Major, Op. 10 No. 3: II. Largo e mesto
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Piano Sonata No. 7 in D Major, Op. 10 No. 3: III. Menuetto. Allegro
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Piano Sonata No. 7 in D Major, Op. 10 No. 3: IV. Rondo. Allegro
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Violin Sonata No. 3 in E-Flat Major, Op. 12 No. 3: I. Allegro con spirito
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Violin Sonata No. 3 in E-Flat Major, Op. 12 No. 3: II. Adagio con molt' espressione
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Violin Sonata No. 3 in E-Flat Major, Op. 12 No. 3: III. Rondo. Allegro molto
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Piano Concerto No. 25 in C Major, K. 503: I. Allegro maestoso (Cadenza: Gulda) - Live
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Piano Concerto No. 25 in C Major, K. 503: II. Andante - Live
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Piano Concerto No. 25 in C Major, K. 503: III. Allegretto - Live
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Violin Sonata No. 5 in F Major, Op. 24 "Spring": I. Allegro
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Violin Sonata No. 5 in F Major, Op. 24 "Spring": II. Adagio molto espressivo
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Violin Sonata No. 5 in F Major, Op. 24 "Spring": III. Scherzo. Allegro molto
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Violin Sonata No. 5 in F Major, Op. 24 "Spring": IV. Rondo. Allegro ma non troppo
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Sonata for Piano 4 Hands in C Major, K. 521: I. Allegro - Live
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Sonata for Piano 4 Hands in C Major, K. 521: II. Andante - Live
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Sonata for Piano 4 Hands in C Major, K. 521: III. Allegretto - Live
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Piano Concerto No. 3 in C Minor, Op. 37: I. Allegro con brio - Live at Teatro Comunale, Ferrara, 2004
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Concerto For 3 Pianos And Orchestra (No. 7) In F, K.242 "Lodron": 2. Adagio - Live
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