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 0xafc0cfd55a35554564a55ecff95c83a79caa4690a42e1c3d64fc716eb5d66006. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/836ba458-270c-474a-a68c-f9df2aab4c04.json and https://artists.proofprofile.net/proofs/artist/836ba458-270c-474a-a68c-f9df2aab4c04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Horn Concerto No. 1 In D Major, K.412: Allegro - Allegro
Horn Concerto No. 1 In D Major, K.412: Rondo: Allegro - Rondo: Allegro
Horn Concerto No. 2 In E-Flat Major, K.417: Allegro Maestoso
Horn Concerto No. 2 In E-Flat Major, K.417: Andante
Horn Concerto No. 2 In E-Flat Major, K.417: Rondo: Allegro
Horn Concerto No. 3 In E-Flat Major, K. 447: Allegro
Horn Concerto No. 3 In E-Flat Major, K. 447: Romanze: Larghetto
Horn Concerto No. 4 In E-Flat Major, K.495: Allegro Moderato
Horn Concerto No. 4 In E-Flat Major, K.495: Romanze: Andante
Horn Concerto No. 4 In E-Flat Major, K.495: Rondo: Allegro Vivace
Le Jeune Pâtre Breton, Opus 13, No. 4 From Fleurs Des Landes
Le Monde Miniscule: La Danse Du Microbe - La Danse Du Microbe
Le Monde Miniscule: Le Petit Americain - Le Petit Americain
Le Monde Miniscule: L'insecte Et Le Pachiderme - L'insecte Et Le Pachiderme
Le Monde Miniscule - Poussières De Sable Sur Flocons De Neige
German Romantic Works for Horn - Schumann, Schubert, Strauss, Reinecke & Weber
Adagio und Allegro for Horn and Piano, Op. 70: I. Adagio
Adagio und Allegro for Horn and Piano, Op. 70: II. Allegro
Trio for Oboe, Horn and Piano, Op. 188: I. Allegro moderato
Trio for Oboe, Horn and Piano, Op. 188: II. Scherzo
Trio for Oboe, Horn and Piano, Op. 188: III. Adagio
Trio for Oboe, Horn and Piano, Op. 188: IV. Finale - Allegro ma non troppo
Concertino for Horn in E Minor, Op. 45: I. Andante
Concertino for Horn in E Minor, Op. 45: II. Andante con moto - Theme & Variations
Concertino for Horn in E Minor, Op. 45: III. Cadenza
Concertino for Horn in E Minor, Op. 45: IV. Alla Polacca
Davies: Sea Eagle - Musgrave: Music for Horn and Piano
Sea Eagle for Solo Horn: III. Presto Molto
Music for Horn and Piano in One Movement
Horn Concerto No. 1 in D Major, K. 412: I. Allegro
Mozart, W.A.: The Wind Concertos / Serenades / Divertimenti
Horn Concerto No. 1 in D Major, K. 412: II. Rondo. Allegro
Horn Concerto No. 4 in E Flat Major, K. 495: I. Allegro maestoso - Cadenza: David Jolley after Dennis Brain
Horn Concerto No. 4 in E Flat Major, K. 495: II. Romanza (Andante)
Horn Concerto No. 4 in E Flat Major, K. 495: III. Rondo (Allegro vivace)
Durufle, M.: Requiem / Mass, "Cum Jubilo" / Notre Pere (Voices of Asension Chorus)
Horn Concerto No. 4 in E-Flat Major, K. 495: III. Rondo. Allegro vivace