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 0x26f021ccb427fa432201a6d32e243c4989615646cc5caf1ad36d248cb8901bb5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70118f07-6c17-49c8-881a-dc598e1bd5b2.json and https://artists.proofprofile.net/proofs/artist/70118f07-6c17-49c8-881a-dc598e1bd5b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano Quintet in C Minor: I. Allegro con fuoco
String Quartet in C Minor: II. Andantino
Piano Quintet in C Minor: III. Fantasia, quasi variazioni
String Quartet in C Minor: III. Intermezzo. Allegretto
Nocturne and Scherzo: I. Nocturne. Largo sostenuto, sempre tempo rubato
String Quartet in C Minor: IV. Variazione con finale fugato
Nocturne and Scherzo: II. Scherzo "Founded on an English Folksong". Allegro moderato
Quintet for Clarinet, Horn, Violin, Cello & Piano in D Major: I. Allegro moderato
Suite de ballet: I. Improvisation. Andante
Quintet for Clarinet, Horn, Violin, Cello & Piano in D Major: II. Intermezzo. Allegretto
Quintet for Clarinet, Horn, Violin, Cello & Piano in D Major: III. Andantino
Suite de ballet: III. Gavotte. Quasi lento
Quintet for Clarinet, Horn, Violin, Cello & Piano in D Major: IV. Finale. Allegro molto
Suite de ballet: IV. Passepied. Allegro vivacissimo
Romance and Pastorale: I. Romance. Andantino
3 Preludes on Welsh Hymn Tunes "Household Music": I. Crug-y-bar "Fantasia. Andante sostenuto"
Romance and Pastorale: II. Pastorale. Andante con moto
3 Preludes on Welsh Hymn Tunes "Household Music": II. St Denio "Scherzo. Allegro vivace"
3 Preludes on Welsh Hymn Tunes "Household Music": III. Aberystwyth "Variations"
Three Latin Motets from 'The Last Supper': I. O bone Jesu
Three Latin Motets from 'The Last Supper': II. Pange lingua
Three Latin Motets from 'The Last Supper': III. In supremae nocte cenae
Nine Settings of Lorine Niedecker for soprano and cello: 1. There's a better shine on the pendulum
Nine Settings of Lorine Niedecker for soprano and cello: 2. My friend tree I sawed you down
Nine Settings of Lorine Niedecker for soprano and cello: 3. Along the river wild sunflowers
Nine Settings of Lorine Niedecker for soprano and cello: 4. Hear where her snow-grave is
Nine Settings of Lorine Niedecker for soprano and cello: 5. How white the gulls
Nine Settings of Lorine Niedecker for soprano and cello: 6. My life by water
Nine Settings of Lorine Niedecker for soprano and cello: 7. Paul
Nine Settings of Lorine Niedecker for soprano and cello: 8. O late fall marsh
Nine Settings of Lorine Niedecker for soprano and cello: 9. For Amelia - Sleep's dream
Duets for Storab: 5: From the Church of Lies
An Interrupted Endless Melody (To the Memory of Janet Craxton) for oboe and piano: 1
An Interrupted Endless Melody (To the Memory of Janet Craxton) for oboe and piano: 2
An Interrupted Endless Melody (To the Memory of Janet Craxton) for oboe and piano: 3
Entr'actes and Sappho Fragments: Cantus 1
Entr'actes and Sappho Fragments: Entr'acte 2 - 2nd version
Entr'actes and Sappho Fragments: Cantus 2
Entr'actes and Sappho Fragments: Entr'acte 3 - 2nd version
Entr'actes and Sappho Fragments: Cantus 3
Entr'actes and Sappho Fragments: Entr'acte 5 - 2nd version
Entr'actes and Sappho Fragments: Cantus 4
Entr'actes and Sappho Fragments: Cantus 5
Holt: ...Era Madrugada, Canciones, Shadow Realm & Sparrow Night
Canciones: No. 1, ...Eyes, to the Shadow
Canciones: No. 3, Death in the Rose Bush
Clarinet Quartet, Op. 35: I. Allegretto (Rather Cautiously)
Clarinet Quartet, Op. 35: II. Molto vivace
String Trio, Op. 48: II. Vivacissimo e ritmico
String Trio, Op. 48: III. Poco adagio, con tenerezza
String Trio, Op. 48: IV. Allegro come prima
Turnage - True Life Stories: Elegy For Andy
Turnage - True Life Stories: William's Pavane
Turnage - True Life Stories: Song for Sally
Turnage - True Life Stories: Edward's refrain
Turnage - True Life Stories: Tune for Toru
Turnage - Two Baudelaire Songs: Harmonie du Soir
Turnage - Two Baudelaire Songs: L'invitation au voyage
Turnage - Two Vocalises: Maclaren's farewell
Turnage: On All Fours, Lament for a Hanging Man, Sarabande & Release
Lament for a Hanging Man: The Hanging Man -
Brundibár: Music by Composers in Theresienstadt
Brundibár, Suite (Arr. D. Matthews): I. Allegro energico
Brundibár, Suite (Arr. D. Matthews): II. Valse. Lento cantabile
Brundibár, Suite (Arr. D. Matthews): III. Allegro vivace
Brundibár, Suite (Arr. D. Matthews): IV. Serenade. Moderato
Brundibár, Suite (Arr. D. Matthews): V. Lento
Brundibár, Suite (Arr. D. Matthews): VI. Moderato tranquillo
Brundibár, Suite (Arr. D. Matthews): VII. Allegro molto à la marcia
String Quartet No. 3, Op. 46: I. Allegro moderato –
String Quartet No. 3, Op. 46: II. Presto –
String Quartet No. 3, Op. 46: III. Largo –
String Quartet No. 3, Op. 46: IV. Allegro vivace e ritmico
String Trio: II. Variations on a Moravian Folksong. Lento
String Quartet No. 2, Op. 7 "From the Monkey Mountains": I. Landscape. Andante
String Quartet No. 2, Op. 7 "From the Monkey Mountains": II. Coach, Coachman and Horse. Andante
String Quartet No. 2, Op. 7 "From the Monkey Mountains": III. The Moon and Me. Largo e misterioso
String Quartet No. 2, Op. 7 "From the Monkey Mountains": IV. Wild Night. Vivace e con fuoco
Walton: Chamber Music – Violin Sonata; Piano Quartet; Anon in Love etc.
Anon in Love: I. Fain Would I Change That Note
Anon in Love: III. Lady, When I Behold the Roses
Anon in Love: V. I Gave Her Cakes and I Gave Her Ale
Façade (1951 Version): No. 16, Valse (Version for Piano)
Violin Sonata: II. Variazioni: Tema. Andante
Violin Sonata: II. Variazioni: Var. 1. A tempo poco più mosso
Violin Sonata: II. Variazioni: Var. 2. A tempo quasi improvisando
Violin Sonata: II. Variazioni: Var. 3. Alla marcia molto vivace
Violin Sonata: II. Variazioni: Var. 4. Allegro molto
Violin Sonata: II. Variazioni: Var. 5. Allegretto con moto
Violin Sonata: II. Variazioni: Var. 6. Scherzando
Violin Sonata: II. Variazioni: Var. 7. Andante tranquillo
Violin Sonata: II. Coda. Molto vivace – Presto
John Pickard: The Gardener of Aleppo & Other Chamber Works
Serenata Concertata: III. Scherzo - Notturno
Beethoven: Septet in E-Flat Major, Op. 20: III. Tempo di menuetto
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1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0163f05543fd56e5e05e68a1a3664c5f7e283b68247bd3b8a2d875725715f7. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:28:46Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1rRFOhBDA0PfHwv3q8x66m.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1rRFOhBDA0PfHwv3q8x66m.
Piano Trio in D Minor, Op. 11: I. Allegro molto vivace
The Echoes of Women - International Women's Day 2024
Piano Trio in D Minor, Op. 11: II. Andante espressivo
Piano Trio in D Minor, Op. 11: III. Lied. Allegretto
Piano Trio in D Minor, Op. 11: IV. Finale. Allegretto moderato
Saint-Saëns: Le carnaval des animaux, R 125: XIII. Le cygne
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b05dc7d58d14b85424ad45df072cddf28e3a33120283c3ad9dc0366350294b5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Yv8b3Ye00kXgBjutsmkbm.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2Yv8b3Ye00kXgBjutsmkbm.
The Carnival of the Animals, R. 125: XIII. The Swan
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b05dc7d58d14b85424ad45df072cddf28e3a33120283c3ad9dc0366350294b5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1ZHn6aSgAUyTHgyfOxgZZ8.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1ZHn6aSgAUyTHgyfOxgZZ8.
The Carnival of the Animals, R. 125: VII. The Aquarium
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b183788098e0ce6264633ce9a536f169f22e66a934ce1a2fcaba40df4fc30a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1rXQvK0rgxiRfn0HdEEOoG.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1rXQvK0rgxiRfn0HdEEOoG.
Four Waltzes for Flute, Clarinet & Piano, Op. 97c: I. Spring Waltz (Arr. Lev Atovmyan)
Flute Quartet No. 1 in D Major, K. 285: II. Adagio
Saint-Saëns: Le carnaval des animaux, R 125: VII. Aquarium
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b183788098e0ce6264633ce9a536f169f22e66a934ce1a2fcaba40df4fc30a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4wclneH8MRMX3kjzABZucN.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4wclneH8MRMX3kjzABZucN.
{"copyright_id":"0xee0163f05543fd56e5e05e68a1a3664c5f7e283b68247bd3b8a2d875725715f7","isrc":"GBAYC8905310","name":"Beethoven: Septet in E-Flat Major, Op. 20: III. Tempo di menuetto","registered_at":"2026-06-17T03:56:47Z","spotify_id":"1ru6HVlZ67MmmIyKH1OjZP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0163f05543fd56e5e05e68a1a3664c5f7e283b68247bd3b8a2d875725715f7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1ru6HVlZ67MmmIyKH1OjZP.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1ru6HVlZ67MmmIyKH1OjZP.
Beethoven: Piano Trio No. 4 in B-Flat Major, Op. 11 "Gassenhauer": II. Adagio
Dvořák: Piano Quintet in A Major, Op. 81, B. 155: II. Dumka. Andante con moto