1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6feb9733312fd2e52daf512bb1f0ed77106ca9dcc6044c75546c5867dfd73be4. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6a4b50a-6c6e-4979-9102-4216b7a04f2f.json and https://artists.proofprofile.net/proofs/artist/b6a4b50a-6c6e-4979-9102-4216b7a04f2f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Franck: Prélude, choral et fugue - Brahms: Piano Sonata No. 3
Prélude, choral et fugue, FWV 21: Prélude
Prélude, choral et fugue, FWV 21: Choral
Piano Sonata No. 3 in F Minor, Op. 5: I. Allegro maestoso
Piano Sonata No. 3 in F Minor, Op. 5: II. Andante espressivo
Piano Sonata No. 3 in F Minor, Op. 5: III. Scherzo. Allegro energico
Piano Sonata No. 3 in F Minor, Op. 5: IV. Intermezzo. Andante molto
Piano Sonata No. 3 in F Minor, Op. 5: V. Finale. Allegro moderato ma rubato
The House Concert Vol.1: Sunwook Kim - Live Recording, 2005
L. v. Beethoven - Piano Sonata No.23 in F minor, Op.57 ("Appassionata"): I. Allegro assai
F. Chopin Nocturne in D-Flat Major, Op.27 No.2
F. Chopin - Nocturne in C minor, Op.48, No.1
F. Chopin - Andante spianato et Grande polonaise brillante in E-flat major, Op.22
F. Chopin - Waltz No.14 in E minor, Op.posth. (*Encore)
F. Chopin - Étude in E major, Op.10, No.3
The House Concert Vol.2: Kim Sunwook (Live)
Mozart - Piano Sonata No.14 in C minor, K.457 - 01 Molto Allegro
Mozart - Piano Sonata No.14 in C minor, K.457 - 02 Adagio
Mozart - Piano Sonata No.14 in C minor, K.457 - 03 Allegro assai
Scriabin - Piano Sonata No.4 in F-sharp major, Op.30 - 01 Andante
Scriabin - Piano Sonata No.4 in F-sharp major, Op.30 - 02 Prestissimo volando
Rachmaninoff - Variations on a theme of Corelli, Op.42_Andante
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation I
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation II
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation III
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation IV
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation V
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation VI
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation VII
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation VIII
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation IX
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation X
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation XI
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation XII
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation XIII
Rachmaninoff - Variations on a theme of Corelli, Op.42_Intermezzo
Rachmaninoff - Variations on a theme of Corelli, Op.42_XIV
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation XV
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation XVI
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation XVII
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation XVIII
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation XIX
Rachmaninoff - Variations on a theme of Corelli, Op.42_Variation XX
Rachmaninoff - Variations on a theme of Corelli, Op.42_Coda Andante
Beethoven - Piano Sonata No.32 in C minor, Op.111 - 01 Maestoso
Beethoven - Piano Sonata No.32 in C minor, Op.111 - 02 Arietta-Adagio molto semplice e cantabile
Piano Concerto No. 1 in D Minor, Op. 15: I. Maestoso (Live)
Brahms: Piano Concerto No. 1 in D Minor, Op. 15 & 6 Piano Pieces, Op. 118
Piano Concerto No. 1 in D Minor, Op. 15: II. Adagio (Live)
Piano Concerto No. 1 in D Minor, Op. 15: III. Rondo. Allegro non troppo (Live)
6 Piano Pieces, Op. 118: No. 1, Intermezzo. Allegro non assai, ma molto appassionato
6 Piano Pieces, Op. 118: No. 2, Intermezzo. Andante teneramente
6 Piano Pieces, Op. 118: No. 3, Ballade. Allegro energico
6 Piano Pieces, Op. 118: No. 4, Intermezzo. Allegretto un poco agitato
6 Piano Pieces, Op. 118: No. 5, Romance. Andante - Allegretto grazioso
6 Piano Pieces, Op. 118: No. 6, Intermezzo. Andante, largo e mesto
Arpeggione Sonata in A Minor, D. 821: I. Allegro moderato
Arpeggione Sonata in A Minor, D. 821: II. Adagio
Arpeggione Sonata in A Minor, D. 821: III. Allegretto
Viola Sonata in C Major, Op. 147: I. Moderato
Viola Sonata in C Major, Op. 147: II. Allegretto
Viola Sonata in C Major, Op. 147: III. Adagio