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 0xd8733328638d7e0a8f88219ee3d932b3241c7d0076d20c438502b353631525b3. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16acacac-f122-4d25-8e3c-da5121e5ec68.json and https://artists.proofprofile.net/proofs/artist/16acacac-f122-4d25-8e3c-da5121e5ec68.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sonata for Pianoforte: I. Boldly; moderately fast
Sonata for Pianoforte: II. Slowly with intensity of expression
Sonata for Pianoforte: III. With verve; fairly fast
Sowerby, L.: Symphony for Organ in G Major / Requiescat in Pace / Fantasy for Flute Stops
Symphony for Organ in G Major: I. Very broadly - Moderately fast
Symphony for Organ in G Major: II. Fast and sinister
Symphony for Organ in G Major: III. Passacaglia
Trio in C-sharp Minor: Allegro moderato con fuoco
Trio in C-sharp Minor: Larghetto tranquillo
Trio in C-sharp Minor: Vivace ma non troppo
Trio For Violin, Violoncello, and Pianoforte: Slow and solemn; Fast, with verve
Trio For Violin, Violoncello, and Pianoforte: Quiet and serene
Trio For Violin, Violoncello, and Pianoforte: Fast. with broad sweep
Forsaken of Man: Part I - The Hope of Jesus
Forsaken of Man: Part III - The Deserters
Forsaken of Man: Part IV - The Death of Jesus
Leo Sowerby: American Master of Sacred Song
Three Psalms: How Long Wilt Thou Forget Me?
Songs of Faith and Penitence: O God of Light
Songs of Faith and Penitence: Thou Art My Strength
An Angel Stood by the Altar of the Temple
Magnificat and Nunc Dimittis in E Minor: Magnificat
Magnificat and Nunc Dimittis in E Minor: Nunc Dimittis
3 Psalms: No. 2. The Lord Is My Shepherd
Songs of Faith & Penitence: No. 1. O God of Light
3 Psalms: No. 3. How Long Wilt Thou Forget Me?
Songs of Faith & Penitence: No. 2. Thou Art My Strength
Magnificat & Nunc Dimittis in E Minor: Nunc Dimittis
Classic Concerto for Organ and Strings: Merrily, with snap
Classic Concerto for Organ and Strings: Very freely (Dreamily and rhapsodically; with poignant expression)
Classic Concerto for Organ and Strings: In Broad Style
Festival Musick: Toccata On 'AGO': With Verve
Classic Concerto for Organ & Strings: Merrily, with snap
Classic Concerto for Organ & Strings: Very freely (Dreamily and rhapsodically; with poignant expression)
Classic Concerto for Organ & Strings: In Broad Style
Organ Music of Leo Sowerby: Lorenz Maycher & Aeolian-Skinner, Kilgore, Texas
Sonatina: I. In a placid and easy going manner
Black is the color of my true love's hair, H. 295, No. 2
Three Folk-Tunes from Somerset, H. 113: The Cuckoo
Three Folk-Tunes from Somerset, H. 113: Lord Rendal
Three Folk-Tunes from Somerset, H. 113: My Man John
Florida Suite, H. 197: Sun-drenched Palms
From the Northland: Impressions of Lake Superior Country, H. 167: Forest Voices
From the Northland: Impressions of Lake Superior Country, H. 167: Cascades
From the Northland: Impressions of Lake Superior Country, H. 167: Burnt Rock Pool
From the Northland: Impressions of Lake Superior Country, H. 167: The Lonely Fiddle Maker
From the Northland: Impressions of Lake Superior Country, H. 167: The Shining Big Sea-Water
Money Musk: A Country Dance Tune, H. 145A
The Irish Washerwoman: A Country Dance Tune, H. 115A
L'Amor di quei Due (The Two Lovers): A Milanese Popular Song, H. 168
Psalm 84, Behold, O God, Our Defender, H.412
Psalm 121, I will Lift Up Mine Eyes, H. 147
The Throne of God: And after these things
The Throne of God: And I saw a new heaven
Classic Concerto for Organ & Strings: I. Merrily, with snap
Classic Concerto for Organ & Strings: II. Very freely
Classic Concerto for Organ & Strings: III. In broad style
Festival Musick: III. Toccata on "AGO" (With Verve)
Classic Concerto for Organ and Strings: I. Merrily, with snap
Classic Concerto for Organ and Strings: II. Very freely
Classic Concerto for Organ and Strings: III. In broad style
Suite for Organ: Fantasy for Flute Stops
Sowerby: Symphony No. 2 / Concert Overture / All On A Summer's Day
Symphony No. 2: II. Recitative: Very slowly
Symphony No. 2: III. Fugue: Not fast: with dignity
All on a Summer's Day: All on a Summer’s Day
Symphony No. 2: II. Recitative. Very slowly
Symphony No. 2: III. Fugue. Not fast: With dignity
From the Northland: III. Burnt Rock Pool
From the Northland: IV. The Shining Big-Sea Water
Sowerby: Classic Concerto for Organ & Strings
Classic Concerto for Organ & Strings: I. Merrily, with Snap
Classic Concerto for Organ & Strings: II. Very Freely
Classic Concerto for Organ & Strings: III. In Broad Style
3 Psalms: No. 2, The Lord Is My Shepherd
3 Psalms: No. 3, How Long Wilt Thou Forget Me?
Songs of Faith & Penitence: No. 1, O God of Light
Songs of Faith & Penitence: No. 2, Thou Art My Strength
Magnificat & Nunc Dimittis in E Minor: I. Magnificat
Magnificat & Nunc Dimittis in E Minor: II. Nunc Dimittis
3 Summer Beach Sketches, H109: No. 1, Light
3 Summer Beach Sketches, H109: No. 2, Water
3 Summer Beach Sketches, H109: No. 3, Sand
Piano Suite, H371 (Performed on 2 Pianos): I. Sadly & Very Quietly
Piano Suite, H371 (Performed on 2 Pianos): II. With Verve
Piano Suite, H371 (Performed on 2 Pianos): III. Slowly with Moderate Movement
Piano Suite, H371 (Performed on 2 Pianos): IV. Fast & Glittering
Leo Sowerby: The Paul Whiteman Commissions & Other Early Works
Serenade for String Quartet in G Major, H. 137
String Quartet in D Minor, H. 172: I. Somber and Slow - Heavily, Not Fast
String Quartet in D Minor, H. 172: II. Quietly, but with Warmth
String Quartet in D Minor, H. 172: III. Fast and with Passionate Urge
Tramping Tune for Piano & Strings, H. 122c
Symphony for Jazz Orchestra, H. 178 "Monotony": I. Nights Out
Symphony for Jazz Orchestra, H. 178 "Monotony": II. Fridays at Five
Symphony for Jazz Orchestra, H. 178 "Monotony": III. Sermons
Symphony for Jazz Orchestra, H. 178 "Monotony": IV. Critics
Choir of St. Paul's Episcopal Church, Greenville, North Carolina
Magnificat & Nunc dimittis in E Minor: Magnificat
Magnificat & Nunc dimittis in E Minor: Nunc dimittis
How Brightly Shines the Morning Star: Music for Epiphany
Parish of All Saints' Ashmont Choir of Men & Boys
L'Orgue de Concert (Grandes Orgues de l'Institut Pontifical de Musique Sacrée, Rome)
Girls' Choir of St. Paul's Cathedral, Buffalo
Behold, God Is My Salvation (Arr. for Treble Choir & Organ)