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 0x550c881c77f64001175fad9be41e6fb28ed03057611ec89a5bda27a5362a7cbf. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40a1f6c0-e764-48c3-a8c4-e0c908918ffd.json and https://artists.proofprofile.net/proofs/artist/40a1f6c0-e764-48c3-a8c4-e0c908918ffd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lichner: Three Sonatinas — Opus 4, Opus 49, and Opus 66 for the Piano
Sonatina in C, Op. 4, No. 1: I. Allegro Moderato
Sonatina in C, Op. 4, No. 1: II. Andante Cantabile
Sonatina in C, Op. 4, No. 1: III. Rondo: Allegro Grazioso
Sonatina in F, Op. 4, No. 2: I. Allegro Moderato
Sonatina in F, Op. 4, No. 2: II. Andante Sostenuto
Sonatina in F, Op. 4, No. 2: III. Polonaise: Allegro Con Grazia
Sonatina in G, Op. 4, No. 3: I. Moderato
Sonatina in G, Op. 4, No. 3: II. Andante Sostenuto
Sonatina in G, Op. 4, No. 3: III. Rondo: Allegretto
Sonatina in C, Op. 49, No. 1: I. Allegro Moderato
Sonatina in C, Op. 49, No. 1: II. Andante Sostenuto
Sonatina in C, Op. 49, No. 1: III. Rondo: Allegro
Sonatina in G, Op. 49, No. 2: I. Moderato
Sonatina in G, Op. 49, No. 2: II. Andante Con Espressione
Sonatina in G, Op. 49, No. 2: III. Rondo: Allegretto Grazioso
Sonatina in F, Op. 49, No. 3: I. Moderato
Sonatina in F, Op. 49, No. 3: II. Andante Cantabile
Sonatina in F, Op. 49, No. 3: III. Minuet: Scherzando
Sonatina in C, Op. 66, No. 1: I. Allegro Moderato
Sonatina in C, Op. 66, No. 1: II. Andante
Sonatina in C, Op. 66, No. 1: III. Rondo: Allegro Ma Non Troppo
Sonatina in F, Op. 66, No. 2: I. Allegro Moderato
Sonatina in F, Op. 66, No. 2: II. Andante Cantabile
Sonatina in F, Op. 66, No. 2: III. Minuet: Moderato
Sonatina in G, Op. 66, No. 3: I. Allegro Moderato
Sonatina in G, Op. 66, No. 3: II. Romance: Andantino
Sonatina in G, Op. 66, No. 3: III. Rondo: Allegretto Grazioso