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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c6a4e17f76ddfaa5d37f4e8240cacb6dc3afa3ca01f174b54d57dc81c835b4. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ea910f3-33ac-4a87-91fd-69247f31930d.json and https://artists.proofprofile.net/proofs/artist/2ea910f3-33ac-4a87-91fd-69247f31930d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Prelude (Escape to Inner Space, Op. 138) (Rahbee)
March of the Wooden Soldiers, Op. 39, No. 5 (Tchaikovsky)
The Young Dancer (Op. 117, No. 7) (Gurlitt)
Oriental Flower (Slow Waltz from Microstyles I) (Norton)
Country Dance in D minor (WoO 15) (Beethoven)
Sonata in F Major (Hob. XVI/9, Third Movement: Scherzo) (Haydn)
The Wild Rider (Op. 68, No. 8) (Schumann)
Sonatina in C Major (Op. 168, No. 3, Third Movement) (Diabelli)
Landler in G Major (D. 365, No. 21) (Schubert)
Minuet in G Major (BWV Anh. 114) (Pezold)
The Merry Farmer (Op. 68, No. 10) (Schumann)
La Caroline (Wq 117/39, H98) (C.P.E. Bach)
Old French Song (Op. 39, No. 16) (Tchaikovsky)
A Carefree Fellow (Un sans-souci) (Turk)
German Dance No. 1 in G Major (Hob. IX: 12, No. 1) (Haydn)
Sonatina in G Major (First Movement) (Beethoven)
Sonatina in G Major (Second Movement) (Beethoven)
German Dance in B flat Major (Hob. IX: 12, No. 2) (Haydn)
Little Study (Op. 68, No. 14) (Schumann)
Polka (from Children's Album, Op. 39) (Tchaikovsky)
Highwayman's Tune (from For Children) (Bartok)
Kamarinskaya (Russian Dance from Children's Album, Op. 39, No. 1
The Little Trifle (Le petit rien) (Couperin)
Song of the Range Rider (from Sagebrush Country) (McKay)
Turkish March (Op. 101, No. 9) (Gurlitt)
Dedicated Most Humbly to the Right-Hand Little Finger (Turk)
Ecossaise in E flat Major (WoO 86) (Beethoven)
Minuetto in C minor (K. 40/L. 357) (Scarlatti)
Spinning Song (Op. 14, No 4) (Ellmenreich)
Rippling Waters (from Pictures and Beyond)
Sonatina in C Major (Op. 36, No. 1, First Movement)
Sonatina in C Major (Op. 36, No. 1, Second Movement)
Sonatina in C Major (Op. 36, No. 1, Third Movement)
Trumpets (from Echoes, Pictures, Riddles and Tales for Solo Pian
Little Flower (from Little Flowers, Op. 205)
Minuet in C minor (from the Anna Magdalena Bach Notebook)
Tango in C minor (from Echoes, Pictures, Riddles and Tales for P
Russian Folksong (Air de la petite Russie, Op. 107, No. 3)
Sonatina in G Major (Op. 36, No. 2, First Movement)
Two's Company (from Four Little Inventions for Piano)
Sonatina in G Major (Op. 151, No. 1, Second Movement: Scherzo)
Rustic Dance (from Five Little Dances, Op. 24, No. 1)
Minuet in D minor (BWV Anh. 132) (from the Anna Magdalena Bach N
German Dance in F Major (Hob. IX/8, No. 12)
Valse Sentimentale in A Major (Schubert)
Waltz in Ab Major, Op. 9, No. 3 (Schubert)
Waltz in Ab Major, Op. 9, No. 6 (Schubert)
Country Dance No. 2 in D Major (Beethoven)
Adagio in C for Glass Harmonica (Mozart)