1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x23e962862afb8373ce60b3bce33230ed462b0df376fc003d60d99d8d170d06c9. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe7f881e-4a5c-4cc3-a9ce-14744c336b48.json and https://artists.proofprofile.net/proofs/artist/fe7f881e-4a5c-4cc3-a9ce-14744c336b48.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concerto for Piano No. 3 in C Major, Op. 144
Sonata for Flute in E Minor 'Undine', Op. 167
Phantasie nach Worten der heiligen Schrift
Concert Fantasy in the Spanish Style, S. 253
Electronic Albéniz: Suite España, Op. 165
Electronic Bach: Sarabande con partite in C major
Verklärte Nacht in D minor, Op. 4, IAS 47
Variations on a Polish Folk Theme, Op. 51
Harmonium Sonata No. 1 In B Minor, Op. 36
Electronic Ravel: Le Tombeau de Couperin
Electronic Tchaikovsky - Serenade for Strings Op.48
Electronic Schumann: Scenes from Childhood
Electronic Rimsky-Korsakov: Scheherazade
Electronic Glazunov: Preludes and Fugues, Op. 101
Electronic Tchaikovsky - The Seasons Op.37b
Electronic Tchaikovsky: Six Pieces Op. 19
Electronic Tchaikovsky: The Nutcracker Suite
Electronic Vivaldi: La Stravaganza, Op.4: Concerto No.1 in B Flat Major, RV 383a
Electronic Schumann: Symphony No. 1, Op. 38
Electronic Wagner: Symphony in C major, WWV 29
Electronic Mahler: Symphony No. 2 in C minor
Electronic Mahler: Symphony No. 1 in D major
Electronic Griffes: Roman Sketches, Op. 7
Electronic Debussy: String Quartet in G minor (L.91) Op.10
Electronic Brahms: Symphony No. 1 in C minor, Op. 68
Electronic Berlioz: Symphonie Fantastique Op. 14
Electronic Ravel: Rapsodie Espagnole Op. 54
Electronic Albéniz: Recuerdos de un Viaje Op. 71
Also Sprach Zarathustra, Op. 30: Sunrise
Electronic Liszt: Album d'un voyageur, S. 156
Overture for an Academic Festival, Op. 80
Electronic Mahler: Symphony No. 4 in G major
Electronic Mahler: Symphony No. 5 in C Sharp Minor
Electronic Verdi: String Quartet in E minor
Electronic Schumann: Symphony No. 3 in E flat major, Op. 97
Sonata No. 12 in D Minor, Op. 5 "La Folia"
Festival Prelude: At the Turn of the Century
Electronic Schumann: Bilder aus Osten, Op. 66
Handel on Synthesizers: Flute Sonatas, Vol. I
Electronic Bach: Aria variata alla maniera italiana
Symphonic Poem No. 1: Ce qu'on entend sur la montagne
Symphonic Poem No. 2: Tasso: lamento e trionfo
Electronic Schumann: Kreisleriana, Op. 16
The Land of the Mountain and the Flood in B Minor, Op. 3
Electronic Schumann: 7 Klavierstücke in Fughettenform, Op. 126
Romeo and Juliet: Overture Fantasia in B Minor, TH 42
Orfeo ed Euridice, Wq. 30: Dance of the Blessed Spirits
Waves of the Ocean in D-flat major, ICB 32
La Prière d'une vierge in E flat major, ITB 6
In the Steppes of Central Asia in A minor, IAB 3
Electronic Nielsen: Symphony No. 1 in G Minor
Symphony No. 3 in F major, Op. 153 “In the Forest”
Sonata in F major 'Golden Sonata’, Z. 810
Symphony for Brass in B Flat Minor, Op. 5
Electronic Nielsen: Symphony No. 2, Op. 16
Electronic Nielsen: Suite for Strings, Op. 1
Orchestral Suite No. 1 in C major, Op. 101
Electronic Bach: Sonatas for Violin and Harpsichord
Clair de lune in D flat major, CD 82 ; L.75
Symphonic Poem No. 13: Von der Wiege bis zum Grabe
El Amor Brujo, IMF 1: Danza del Ritual de Fuego
Variations on a Theme by Paganini, Op. 35