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 0xb6ea19305492981f2f64e9ae209aa05ff778ee3df500132c21d0edd4a03a8ea0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d606b56e-9623-46af-87e9-c01ee9ba4e54.json and https://artists.proofprofile.net/proofs/artist/d606b56e-9623-46af-87e9-c01ee9ba4e54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
16 Waltzes, Op. 39: No. 15 in A-Flat Major
Wiegenlied, Op. 49: IV. Guten Abend gut Nacht
Wiegenlied, Op. 98 in E-Flat Major: II. Schlafe, schlafe
Wiegenlied, Op. 76: LII. Maria sitzt am Rosenhag
Melodies of the Moments, Op. 145: I. Lullaby
Children's Corner, L. 113: II. Jimbo's Lullaby
Canción de cuna para dormir a un negrito
Niñerías, Series 1, Op. 21: IV. Berceuse
Canciones españolas antiguas: VIII. Nana de Sevilla
Lyric Pieces, Book II, Op. 38: No. 1, Berceuse
Lyric Pieces, Book IX, Op. 68: No. 5, At the Cradle
Norwegian Folk Tunes, Op. 66: No. 7, Lullaby
Norwegian Folk Tunes, Op. 66: No. 17, Lullaby
Norwegian Folk Tunes, Op. 66: No. 19, Gjendine's Lullaby
Piano Transcriptions of Songs I, Op. 41: No. 1, Lullaby
4 Songs, Op. 39: No. 4, Sleep, My Poor Friend
12 Pièces faciles pour guitar: II. Berceuse
Pièces brèves: IV. Berceuse-Boîte à musique
Fantasia. On Themes from Glinka's "A Life for the Tsar"
Piano Sonata in B-Flat Minor, Op. 5: I. Andante
Piano Sonata in B-Flat Minor, Op. 5: II. Mazurka
Piano Sonata in B-Flat Minor, Op. 5: III. Andante
Piano Sonata No. 2 in B-Flat Minor: I. Andantino
Piano Sonata No. 2 in B-Flat Minor: II. Mazurka. Moderato
Piano Sonata No. 2 in B-Flat Minor: III. Intermezzo Larghetto
Piano Sonata No. 2 in B-Flat Minor: IV. Finale. Allegro non troppo ma con fuoco