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 0x378413514f15868fc92e7687f71dfc73eda08b648f6d5931132a83405edcd537. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c961023-3ea7-4bf5-ba8c-b513c4ddcbc4.json and https://artists.proofprofile.net/proofs/artist/8c961023-3ea7-4bf5-ba8c-b513c4ddcbc4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Milestones of a Cello Legend: The Best of the Best - Emanuel Feuermann, Vol. 4
Cello Suite No. 3 in C Major, BWV 1009: IV. Sarabande - V. Bourrées I-II (Live)
Toccata, Adagio & Fugue in C Major, BWV 564: II. Adagio (Excerpts Arr. P. Casals for Cello & Piano) [I]
Toccata, Adagio & Fugue in C Major, BWV 564: II. Adagio (Excerpts Arr. P. Casals for Cello & Piano) [II]
Toccata, Adagio & Fugue in C Major, BWV 564: II. Adagio (Excerpts Arr. P. Casals for Cello & Piano) [III]
Emanuel Feuermann: Unexpected Discoveries (The Complete Acoustic Recordings (1921-1926) - Selected Performances (1938-1941)
Cello Concerto No. 2 in D Major, Hob.VIIb:2: I. Allegro
Cello Concerto in B Minor, Op. 104, B. 191: I. Allegro
Ungarischer Rhapsodie, Op. 68 (arr. for orchestra)
Cello Concerto No. 2 in D Major, Hob.VIIb:2: II. Adagio
Cello Concerto in B Minor, Op. 104, B. 191: II. Adagio ma non troppo
Nocturne No. 2 in E-Flat Major, Op. 9, No. 2 (arr. for cello and harp)
Cello Concerto in B Minor, Op. 104, B. 191: III. Finale: Allegro moderato
Cello Concerto in C Major, Op. 20: I. Allegro moderato
Zigeunerweisen, Op. 20 (arr. E. Feuermann)
Klid (Silent Woods), Op. 68, No. 5, B. 182
Cello Concerto in C Major, Op. 20: II. Andante con moto
Don Quixote, Op. 35, TrV 184: Introduction: Massiges zeitmas
Kinderszenen (Scenes of Childhood), Op. 15: No. 7. Traumerei (Dreaming) (arr. for cello, organ and orchestra)
Cello Concerto in C Major, Op. 20: III. Allegro vivace
Don Quixote, Op. 35, TrV 184: Theme: Massig (Don Quixote, the Knight of the Sorrowful Countenance)
12 Klavierstucke, Op. 85: No. 12. Abendlied (arr. for cello, organ and harp)
Cello Concerto in A Major, Op. 4, No. 1: I. Allegro moderato
Don Quixote, Op. 35, TrV 184: Variation 1: Das Abenteur mit den Windmuhlen (The Adventure with the Windmills) -
Kinderszenen (Scenes of Childhood), Op. 15: No. 7. Traumerei (Dreaming) (arr. for cello, organ and harp)
Cello Concerto in A Major, Op. 4, No. 1: II. Largo
Don Quixote, Op. 35, TrV 184: Variation 2: Der Kampf gegen die Hammelherde (The Battle with the Sheep) -
12 Klavierstucke, Op. 85: No. 12. Abendlied (arr. for cello, harmonium and harp)
Cello Concerto in A Major, Op. 4, No. 1: III. Rondo: Allegretto
Don Quixote, Op. 35, TrV 184: Variation 3: Gesprache zwischen Ritter und Knappe (Dialogue of the Knight and Squire)
Overture (Suite) No. 3 in D Major, BWV 1068: II. Air, "Air on a G String" (arr. for cello, piano and harmonium)
Cello Sonata No. 5 in D Major, Op. 102, No. 2: II. Adagio con moto sentimento d'affetto - III. Allegro fugato
Don Quixote, Op. 35, TrV 184: Variation 4: Das Abenteur mit der Prozession von Bussern (The Adventure with the Peninents) -
Ave Maria (arr. for cello, piano and harmonium)
Nocturne No. 2 in E-Flat Major, Op. 9, No. 2 - 7 Canciones populares espanolas: No. 4. Jota (arr. for cello and piano)
Don Quixote, Op. 35, TrV 184: Variation 5: Don Quixotes Wacht in der Sommernacht (The Knight's Vigil)
Don Quixote, Op. 35, TrV 184: Variation 6: Die verzauberte Dulzinea (The False Dulcinea) -
Don Quixote, Op. 35, TrV 184: Variation 7: Der Ritt durch die Luft (The Ride Through the Air) -
2 morceaux, Op. 36: II. Cantabile (version for cello and piano)
Don Quixote, Op. 35, TrV 184: Variation 8: Die Fahrt auf dem verzauberten Nachen (The Adventure of the Echanted Boat) [Barcarolle] -
Don Quixote, Op. 35, TrV 184: Variation 9: Der Kampf gegen die vermeintlichen Zauberer (The Combat with 2 Magicians) -
Don Quixote, Op. 35, TrV 184: Variation 10: Heimkehr des geschlagenen Don Quixote (The Defeat of Don Quixote) -
Ungarischer Rhapsodie, Op. 68 (arr. for cello and orchestra)
Don Quixote, Op. 35, TrV 184: Finale: Don Quixotes Tod (The Death of Don Quixote)