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 0x8f0cc1bfadc2e887f66fdfa21cfcaec44389a0a8434afa96e1d780de8786c55b. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5cd81266-517a-4c24-a17a-2261f98654b4.json and https://artists.proofprofile.net/proofs/artist/5cd81266-517a-4c24-a17a-2261f98654b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vesperae solennes de confessore, KV 339: No. 5, Laudate Dominum
Fugue in G Minor, BWV 578 "Little Fugue"
La colpa, il pentimento, la grazia, Oratorio per la passione di nostro Signore Gesù Cristo: O Croce unica speme
Deus Judicium Tuum, TWV7:7: Et dominabitur a mari usque ad mare
Ellens dritter Gesang, D. 839 "Ave Maria de Schubert"
Requiem, KV 626: Offertorium, Hostias et preces
Samson, Act III, HWV 57: "Let their celestial concerts all unite"
Canon and Gigue in D Major "Pachelbel's Canon": 1. Canon
Heart and Mouth and Deed and Life, BWV 147: Chorale, Jesu, Joy of Man's Desiring
Bagatelle No. 25 in A Minor, WoO 59 "Für Elise"
Piano Sonata No. 11 in A Major, K. 331 "Alla turca": III. Allegretto
Notebook for Anna Magdalena Bach, BWV Anh. 114: No. 4 in G Major, Menuet
Piano Sonata No. 21 in C Major, Op. 53 "Waldstein": I. Allegro con brio
Liebesträume in A-Flat Major, S. 541: III. Nocturne. Oh Lieb, so lang du Lieben Kannst
Suite bergamasque, L. 75: III. Clair de lune
2 Scherzos, D. 593: No. 1 in B Major, Allegretto
Album for the Young, Op. 68: No. 8 in A Minor, The Wild Horseman
Piano Sonata No. 15 in F Major, K. 533: I. Allegro
The Well-Tempered Clavier, Book I: Fugue No. 2 in C Minor, BWV 847
Two Concert Studies, S. 145: No. 1 in A-Flat Major, Forest Murmurs
Piano Sonata No. 13 in B-Flat Major, K. 333: III. Allegretto grazioso
Piano Sonata No.14 in C-Sharp Minor, Op. 27 "Moonlight Sonata": I. Adagio sostenuto
Italian Concerto in F Major, Op. 2, BWV 971: I. Moderato
Waltz No. 1 in D-Flat Major, Op. 64 "Minute Waltz"
Grande valse brillante in E-Flat Major, Op. 18
Waltz No. 1 in A-Flat Major, Op. 69 "The Farewell Waltz"
Mazurkas, Op. 63: No. 3 in C-Sharp Minor
Nocturnes, Op. 48: No. 2 in F-Sharp Minor
Polonaises, Op. 26: No. 1 in C-Sharp Minor
Piano Concerto No. 1 in E-Flat Minor, S. 124
Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor Concerto": I. Allegro
Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor Concerto": II. Adagio un poco mosso
Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor Concerto": III. Rondo - Allegro
Violin Concerto No. 5 in A Major, K. 219: II. Adagio
21 Hungarian Dances in G Minor, WoO 1: I. Allegro molto
Serenade No. 13 in G Major, K. 525 "Eine Kleine Nachtmusik": I. Allegro
Symphony No. 3 in E-Flat Major, Op. 55 "Eroica": I. Allegro con brio
Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
Symphony No. 6 in F Major, Op. 68 "Pastoral": III. Allegro
Symphony No. 6 in F Major, Op. 68 "Pastoral": V. Allegretto
Symphony No. 7 in A Major, Op. 92: II. Allegretto
Symphony No. 7 in A Major, Op. 92: III. Presto
Symphony No. 9 in D Minor, Op. 125 "Choral": IV. Presto - Allegro molto assai - Andante maestoso - Allegro energico
Piano Concerto No. 2 in B-Flat Major, Op. 19: I. Allegro con brio
Piano Concerto No. 4 in G Major, Op. 58: II. Andante con moto