Péter Nagy
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genre: classical
genre: classical piano
description: Péter Nagy or Peter Nagy may refer to: Peter Nagy (artist) (born 1959), American artist and gallery owner in India Peter Nagy (canoeist) (born 1964), Slovak slalom canoeist Péter Nagy (footballer) (b
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album: Schumann: Poetica
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album: Brahms: Opus 38 & 99 (Sonatas for Piano and Cello)
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album: The Great Book of Flute Sonatas, Vol. 5: Soviet & Hungarian Works
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album: Romantic Piano Favourites, Vol. 10
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album: Classical for Cats
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La vida breve, Act II: Danse espagnole
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21 Hungarian Dances, WoO 1: Hungarian Dance No. 5
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audio: 21 Hungarian Dances, WoO 1: Hungarian Dance No. 5
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The Great Book of Flute Sonatas, Vol. 4: Impressionism
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The Great Book of Flute Sonatas, Vol. 2
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Bartók: Works for Violin & Piano
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Piano Bliss
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track: Salut d'amour, Op. 12
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Violin Recital: Barnabas Keleman
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Kreisler: Music for Violin and Piano
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track: La vida breve, Act II: Danse espagnole

The Romance of the Piano
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Mendelssohn: Songs Without Words (Selection)
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T08:56:20Z

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Lieder ohne Worte (Songs without Words), Book 2, Op. 30: No. 8 in B-Flat Minor, Op. 30, No. 2
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Romantic Piano Favourites, Vol. 8
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track: 6 Songs, Op. 38 (version for piano): Daisies, Op. 38
track: 21 Hungarian Dances, WoO 1: Hungarian Dance No. 5
track: Fantasia in C Minor, K. 475
track: 6 Moments musicaux, Op. 94, D. 780: Moment musical in F Minor
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track: La Gioconda (arr. for piano): Dance of the Hours from La Gioconda

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Berceuse Op. 16
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6 Songs, Op. 38 (version for piano): Daisies, Op. 38
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Fantasia in C Minor, K. 475
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6 Moments musicaux, Op. 94, D. 780: Moment musical in F Minor
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Salut d'amour, Op. 12
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La Gioconda (arr. for piano): Dance of the Hours from La Gioconda
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Romantic Piano Favourites, Vol. 10
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Romantic Piano Favourites, Vol. 4
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Romantic Piano Favourites, Vol. 2
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50 Best Smooth Classics
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Symphony No. 5 in C-Sharp Minor: IV. Adagietto: Sehr langsam
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5 Lieder, Op. 49: No. 4. Wiegenlied (arr. P. Nagy for piano)
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subject of: OpenTimestamps Proof of Existence
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Recuerdos de la Alhambra
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subject of: OpenTimestamps Proof of Existence
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Adagio in G Minor (attrib. to Albinoni)
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Pavane, Op. 50
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Ein Sommernachtstraum, Op. 61, MWV M13: A Midsummer Night's Dream, Op. 61, Act III: Nocturne
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Madama Butterfly, Act II: Madame Butterfly, Act II: Humming Chorus
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audio: Madama Butterfly, Act II: Madame Butterfly, Act II: Humming Chorus
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Prélude à l'après-midi d'un faune, L. 86: Prelude a l'apres-midi d'un faune
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by artist: Orchestre National De Lyon
by artist: Jun Markl
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Prélude à l'après-midi d'un faune, L. 86: Prelude a l'apres-midi d'un faune
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Adagio for Strings, Op. 11
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Adagio for Strings, Op. 11
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O Magnum Mysterium: O magnum mysterium
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by artist: Elora Festival Singers
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: O Magnum Mysterium: O magnum mysterium
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The Lark Ascending
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by artist: David Greed
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by artist: David Lloyd-Jones
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: The Lark Ascending
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The Gadfly Suite, Op. 97a: VIII. Romance
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by artist: Ukraine National Symphony Orchestra
by artist: Theodore Kuchar
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: The Gadfly Suite, Op. 97a: VIII. Romance
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Variations on an Original Theme, Op. 36, "Enigma": Variation 9: Nimrod
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by artist: Adrian Leaper
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Variations on an Original Theme, Op. 36, "Enigma": Variation 9: Nimrod
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Concerto for Flute and Harp in C Major, K. 299: II. Andantino
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by artist: Hana Mullerova
by artist: Capella Istropolitana
by artist: Richard Edlinger
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genre: classical
genre: classical-era
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subject of: OpenTimestamps Proof of Existence
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27, No. 2, "Moonlight": I. Adagio sostenuto
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Cavalleria Rusticana: Intermezzo
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subject of: OpenTimestamps Proof of Existence
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Piano Concerto No. 2 in F Major, Op. 102: II. Andante
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Overture (Suite) No. 3 in D Major, BWV 1068: II. Air, "Air on a G String"
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audio: Overture (Suite) No. 3 in D Major, BWV 1068: II. Air, "Air on a G String"
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Ave verum corpus, K. 618: Ave Verum Corpus, K. 618
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Serse (Xerxes), HWV 40: Ombra mai fu: Larghetto (arr. for oboe and orchestra)
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Carnival of the Animals: XIII. The Swan
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A Bride's Guide To Wedding Music
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Te Deum, H. 146 (Arr. For Organ): Te Deum, H. 146: Prelude (Arr. For Organ)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
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Trumpet Tune
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by artist: György Geiger
by artist: Henry Purcell
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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String Quintet In E major, Op. 11, No. 5, G. 275 : String Quintet In E Major, G. 275: III. Minuetto
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subject of: OpenTimestamps Proof of Existence
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Organ Symphony No. 5 in F minor, Op. 42, No. 1: Organ Symphony No. 5: Toccata
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Organ Symphony No. 5 in F minor, Op. 42, No. 1: Organ Symphony No. 5: Toccata
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Suite Bergamasque : Suite bergamasque: III. Clair De Lune
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subject of: OpenTimestamps Proof of Existence
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audio: Suite Bergamasque : Suite bergamasque: III. Clair De Lune
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3 Gymnopedies (Arr. For Flute And Harp): Gymnopedie No. 1 (Arr. For Flute And Harp)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:53:06Z
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2 Arabesques (Arr. For Flute And Harp): Arabesque No. 1 (Arr. For Flute And Harp)
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subject of: OpenTimestamps Proof of Existence
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Ave Maria
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Carmen (Arr. For Flute And Harp): Carmen: Entr'acte To Act III (Arr. For Flute And Harp)
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subject of: OpenTimestamps Proof of Existence
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Classic Ranking Top 50
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    date published: 2026-07-08T03:20:19Z
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track: Masquerade-Suite: Waltz
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    date published: 2026-07-08T03:53:27Z
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track: Études, Op. 10: Etude No. 3 in E Major, Op. 10, No. 3
track: Nocturne in E-Flat Major, Op. 9 No. 2
track: Liebesträume, S. 541: No. 3, Nocturne in A-Flat Major
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track: The Planets, Op. 32, H. 125: IV. Jupiter, the Bringer of Jollity
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:22:41Z

Boléro, M. 81
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Études, Op. 10: Etude No. 3 in E Major, Op. 10, No. 3
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subject of: OpenTimestamps Proof of Existence
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Nocturne in E-Flat Major, Op. 9 No. 2
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Liebesträume, S. 541: No. 3, Nocturne in A-Flat Major
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Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
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The Planets, Op. 32, H. 125: IV. Jupiter, the Bringer of Jollity
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Symphony No. 9 in E Minor, Op. 95, B. 178 "From the New World": IV. Allegro con fuoco
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Sonata for 2 Pianos in D Major, K. 448: I. Allegro con spirito
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Salut d'amour, Op. 12 (Arr. D. Sosin for Flute & Harp)
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    date published: 2026-07-08T03:53:27Z
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track: 3 Gymnopédies: Gymnopédie No. 1
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OpenTimestamps Proof of Existence
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12 Variations on Ah, vous dirai-je, maman, K. 265
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Prelude No. 4 in E Minor, Op. 28, No. 4
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subject of: OpenTimestamps Proof of Existence
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audio: Prelude No. 4 in E Minor, Op. 28, No. 4
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The Well-Tempered Clavier, Book 1, BWV 846-869: No. 1 in C Major, BWV 846
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subject of: OpenTimestamps Proof of Existence
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audio: The Well-Tempered Clavier, Book 1, BWV 846-869: No. 1 in C Major, BWV 846
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3 Gymnopédies: Gymnopédie No. 1
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subject of: OpenTimestamps Proof of Existence
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Suite bergamasque, L. 75: Suite Bergamasque: III. Clair de lune
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Piano Sonata No. 11 in A Major, K. 331: I. Tema: Andante grazioso
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Power to the Women: The Best of Female Classical Composers
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:22:41Z

La Lisonjera (The Flatterer), Op. 50
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    date published: 2026-07-08T03:53:27Z
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track: Christmas-Day Secrets
track: Go tell Aunt Rhody (arr. for piano)
track: Mary Had a little lamb (arr. for piano)
track: Petit Papa (arr. for piano)
track: Lightly Row (arr. for piano)
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OpenTimestamps Proof of Existence
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191256419
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad78be977e0adaa43adf7fa021cab42ce24f1f2ee2be292924b009e1679982f7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191256419.
  date published: 2026-06-13T15:41:10Z
audio: Christmas-Day Secrets
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 148.195
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.431
  additional property: Energy
    type: PropertyValue
    value: 0.137
  additional property: Speechiness
    type: PropertyValue
    value: 0.067
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.875
  additional property: Liveness
    type: PropertyValue
    value: 0.12
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.853
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.318
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Go tell Aunt Rhody (arr. for piano)
type: MusicRecording
duration: PT0M35S
duration ms: 35293
explicit: false
by artist: Anonymous
by artist: Traditional
by artist: Jenő Jandó
in album: Piano Favourites for Young People, Vol. 2
  type: MusicAlbum
  date published: 2012-12-11
isrc code: HKI191256411
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T23:11:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x126850385f8623c1e0464e019dfeb98b96382bdb07c1fc96ac3f2b97a4c3458f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191256411
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126850385f8623c1e0464e019dfeb98b96382bdb07c1fc96ac3f2b97a4c3458f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191256411.
  date published: 2026-06-13T12:53:06Z
audio: Go tell Aunt Rhody (arr. for piano)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 176.605
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.414
  additional property: Energy
    type: PropertyValue
    value: 0.097
  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.591
  additional property: Liveness
    type: PropertyValue
    value: 0.095
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.971
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.549
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Mary Had a little lamb (arr. for piano)
type: MusicRecording
duration: PT0M19S
duration ms: 19053
explicit: false
by artist: Anonymous
by artist: Traditional
by artist: Jenő Jandó
in album: Piano Favourites for Young People, Vol. 2
  type: MusicAlbum
  date published: 2012-12-11
isrc code: HKI191256410
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T13:20:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4856b111e3f39cf7320b52a20a4dfa163dfda260e27efca3f7b7be4443b9bd1e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191256410
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4856b111e3f39cf7320b52a20a4dfa163dfda260e27efca3f7b7be4443b9bd1e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191256410.
  date published: 2026-07-08T03:22:41Z
audio: Mary Had a little lamb (arr. for piano)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.537
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.732
  additional property: Energy
    type: PropertyValue
    value: 0.096
  additional property: Speechiness
    type: PropertyValue
    value: 0.342
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.838
  additional property: Liveness
    type: PropertyValue
    value: 0.074
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.461
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Petit Papa (arr. for piano)
type: MusicRecording
duration: PT0M45S
duration ms: 45786
explicit: false
by artist: Anonymous
by artist: Traditional
by artist: Jenő Jandó
in album: Piano Favourites for Young People, Vol. 2
  type: MusicAlbum
  date published: 2012-12-11
isrc code: HKI191256408
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T06:47:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb1140cec911cc147919c0349f85b68e9fd31aceae9f12d4e0e22aeacc1d704d2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191256408
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1140cec911cc147919c0349f85b68e9fd31aceae9f12d4e0e22aeacc1d704d2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191256408.
  date published: 2026-06-13T12:53:06Z
audio: Petit Papa (arr. for piano)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.091
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.519
  additional property: Energy
    type: PropertyValue
    value: 0.116
  additional property: Speechiness
    type: PropertyValue
    value: 0.113
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.819
  additional property: Liveness
    type: PropertyValue
    value: 0.077
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.712
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.601
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Lightly Row (arr. for piano)
type: MusicRecording
duration: PT0M31S
duration ms: 31213
explicit: false
by artist: Anonymous
by artist: Traditional
by artist: Jenő Jandó
in album: Piano Favourites for Young People, Vol. 2
  type: MusicAlbum
  date published: 2012-12-11
isrc code: HKI191256407
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T06:46:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeaa9fad188ccbeb702f009e0a38e47597cd6feb2324751a29c84ce9b977dd9ea
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191256407
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa9fad188ccbeb702f009e0a38e47597cd6feb2324751a29c84ce9b977dd9ea. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191256407.
  date published: 2026-06-13T12:53:06Z
audio: Lightly Row (arr. for piano)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 149.806
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.516
  additional property: Energy
    type: PropertyValue
    value: 0.298
  additional property: Speechiness
    type: PropertyValue
    value: 0.068
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.578
  additional property: Liveness
    type: PropertyValue
    value: 0.104
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.961
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.55
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Lyric Pieces, Book 5, Op. 54: No. 4. Nocturne
type: MusicRecording
duration: PT2M57S
duration ms: 177813
explicit: false
by artist: Edvard Grieg
by artist: Balazs Szokolay
in album: Piano Favourites for Young People, Vol. 2
  type: MusicAlbum
  date published: 2012-12-11
genre: classical
genre: late-romantic-era
genre: norwegian-classical
isrc code: HKI199246111
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:06:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x28f2d82a2f7654e8788f038b9786680efa1949897f6462a8e7f54a6026debadb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199246111
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f2d82a2f7654e8788f038b9786680efa1949897f6462a8e7f54a6026debadb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199246111.
  date published: 2026-07-08T03:53:27Z
audio: Lyric Pieces, Book 5, Op. 54: No. 4. Nocturne
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.862
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.306
  additional property: Energy
    type: PropertyValue
    value: 0.068
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.698
  additional property: Liveness
    type: PropertyValue
    value: 0.115
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.033
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.878
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Ecossaise in C Major
type: MusicRecording
duration: PT0M46S
duration ms: 46053
explicit: false
by artist: Johann Nepomuk Hummel
by artist: Jenő Jandó
in album: Piano Favourites for Young People, Vol. 2
  type: MusicAlbum
  date published: 2012-12-11
isrc code: HKI191256422
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T06:45:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0559d9c21751de82656e9c1c19aac6bd177b8bc9fa2f5e49d0f6308491947ef6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191256422
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0559d9c21751de82656e9c1c19aac6bd177b8bc9fa2f5e49d0f6308491947ef6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191256422.
  date published: 2026-06-13T13:32:09Z
audio: Ecossaise in C Major
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 149.894
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.312
  additional property: Energy
    type: PropertyValue
    value: 0.102
  additional property: Speechiness
    type: PropertyValue
    value: 0.076
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.915
  additional property: Liveness
    type: PropertyValue
    value: 0.091
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.582
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.183
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

A Short Story
type: MusicRecording
duration: PT0M55S
duration ms: 55160
explicit: false
by artist: Heinrich Lichner
by artist: Jenő Jandó
in album: Piano Favourites for Young People, Vol. 2
  type: MusicAlbum
  date published: 2012-12-11
isrc code: HKI191256423
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T06:43:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa3f298621cf74e1a358d49253298063486a890d0cdf4150bd45b89c20b5e96a6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191256423
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
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Au clair de la lune (arr. for piano)
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audio: Au clair de la lune (arr. for piano)
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My First Lullaby Album
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The Firebird Suite: V. Berceuse (Lullaby)
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Berceuse, Op. 16
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Lyric Pieces, Book 5, Op. 54: No. 4. Nocturne
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2 Pieces, Op. posth., B. 188: No. 1. Lullaby in G Major
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subject of: OpenTimestamps Proof of Existence
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Suite bergamasque: III. Clair de lune (arr. A. Reed for orchestra)
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Lieder ohne Worte (Songs without Words), Book 6, Op. 67: No. 36 in E Major, Op. 67, No. 6
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subject of: OpenTimestamps Proof of Existence
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Wiegenlied, Op. 98, No. 2, D. 498 (arr. for orchestra)
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Book of Songs, Book 1: Come, heavy sleep
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Reverie
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Classics for Lovers
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track: Pavane, Op. 50
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-06T07:16:32Z
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  subject of: OpenTimestamps Proof of Existence
  audio: Carnival of the Animals: XIII. Le Cygne (The Swan) (arr. for cello and orchestra)
track: Variations on an Original Theme, Op. 36, "Enigma": Variation 9. Nimrod (A. J. Jaeger)

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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-06T06:56:49Z

Carnival of the Animals: XIII. Le Cygne (The Swan) (arr. for cello and orchestra)
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Variations on an Original Theme, Op. 36, "Enigma": Variation 9. Nimrod (A. J. Jaeger)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T15:12:44Z
audio: Variations on an Original Theme, Op. 36, "Enigma": Variation 9. Nimrod (A. J. Jaeger)
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The Maiden's Prayer - Leaves From Grandmother's Piano Album
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-06T06:56:49Z
  audio: The Maiden's Prayer, Op. 4
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track: 8 Humoresques, Op. 101: Humoresque In G Flat Major, Op. 101, No. 7
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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track: String Quintet In E Major, Op. 11, No. 5, G. 275 (Arr. For Piano): Minuet From String Quintet In E Major, G. 275
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  subject of: OpenTimestamps Proof of Existence
  audio: String Quintet In E Major, Op. 11, No. 5, G. 275 (Arr. For Piano): Minuet From String Quintet In E Major, G. 275
track: 12 Morceaux, Op. 40: 12 Morceaux, Op. 40: No.2. Chanson Triste In G Minor
track: Gavotte In D Major, 'Rosine'

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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
type: DigitalDocument
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7421974febf8fd80bff6332003c5efb639dfd67313f054569ffdf1d34e1672f8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199295302.
date published: 2026-07-08T03:20:19Z

String Quintet In E Major, Op. 11, No. 5, G. 275 (Arr. For Piano): Minuet From String Quintet In E Major, G. 275
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12 Morceaux, Op. 40: 12 Morceaux, Op. 40: No.2. Chanson Triste In G Minor
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: 12 Morceaux, Op. 40: 12 Morceaux, Op. 40: No.2. Chanson Triste In G Minor
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Gavotte In D Major, 'Rosine'
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My First Tchaikovsky Album
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track: Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso - Allegro con spirito (opening)
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Classical Lullabies
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track: I. Berceuse
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track: VI. Lullaby
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Canon and Gigue in D Major
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee210010f06f2466514da07dc811dfe74cc8e8c486cb3fbcd0f27365e97a701. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199816619.
  date published: 2026-07-08T03:53:27Z
audio: I. Berceuse
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.702
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.394
  additional property: Energy
    type: PropertyValue
    value: 0.018
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.828
  additional property: Liveness
    type: PropertyValue
    value: 0.078
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.261
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.679
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Berceuse, "Elegie No. 7"
type: MusicRecording
duration: PT4M37S
duration ms: 277813
explicit: false
by artist: Ferruccio Busoni
by artist: Wolf Harden
in album: Classical Lullabies
  type: MusicAlbum
  date published: 2025-04-25
genre: classical-piano
isrc code: HKI190836909
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T20:56:02+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb1b71d24a9eae98e18c9838f721ed9b32b73846009d7d1693d125ff0b8e8ce3e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190836909
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b71d24a9eae98e18c9838f721ed9b32b73846009d7d1693d125ff0b8e8ce3e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190836909.
  date published: 2026-07-08T03:22:41Z
audio: Berceuse, "Elegie No. 7"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.702
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.277
  additional property: Energy
    type: PropertyValue
    value: 0.007
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.859
  additional property: Liveness
    type: PropertyValue
    value: 0.073
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.031
  additional property: Loudness (dB)
    type: PropertyValue
    value: -36.739
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

VI. Lullaby
type: MusicRecording
duration: PT4M17S
duration ms: 257040
explicit: false
by artist: Igor Stravinsky
by artist: Brussels Philharmonic
by artist: Ali Rahbari
in album: Classical Lullabies
  type: MusicAlbum
  date published: 2025-04-25
isrc code: HKI199313806
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T10:36:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x492aa4bac05b66f45b03bae3d9826f90eb5f29e379f04dbb443c418d6f83d01a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199313806
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492aa4bac05b66f45b03bae3d9826f90eb5f29e379f04dbb443c418d6f83d01a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199313806.
  date published: 2026-07-07T18:39:05Z
audio: VI. Lullaby
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 130.572
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.171
  additional property: Energy
    type: PropertyValue
    value: 0.004
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.923
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.944
  additional property: Liveness
    type: PropertyValue
    value: 0.082
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -36.75
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Minor

II. Adagio cantabile
type: MusicRecording
duration: PT4M52S
duration ms: 292720
explicit: false
by artist: Ludwig van Beethoven
by artist: Boris Giltburg
in album: Classical Lullabies
  type: MusicAlbum
  date published: 2025-04-25
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: HKI192031102
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-25T06:51:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf53b1559cfa5e0c26b46b366dea38d2b26bb6641f6f013728629e874f77fc9c2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192031102
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53b1559cfa5e0c26b46b366dea38d2b26bb6641f6f013728629e874f77fc9c2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192031102.
  date published: 2026-07-08T03:22:41Z
audio: II. Adagio cantabile
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.597
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.301
  additional property: Energy
    type: PropertyValue
    value: 0.005
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.896
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.085
  additional property: Loudness (dB)
    type: PropertyValue
    value: -40.124
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sospiri, Op. 70
type: MusicRecording
duration: PT5M10S
duration ms: 310546
explicit: false
by artist: Edward Elgar
by artist: English Chamber Orchestra
by artist: Julian Lloyd Webber
in album: Classical Lullabies
  type: MusicAlbum
  date published: 2025-04-25
genre: classical
genre: late-romantic-era
genre: british-modern-classical
genre: victorian-britain
isrc code: HKI191422102
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T06:34:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdcd586f875eefc73d9fe595a05634b6a88e22849e7da2f6b801f11807be95694
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191422102
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd586f875eefc73d9fe595a05634b6a88e22849e7da2f6b801f11807be95694. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191422102.
  date published: 2026-07-08T03:22:41Z
audio: Sospiri, Op. 70
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.163
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.147
  additional property: Energy
    type: PropertyValue
    value: 0.143
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.946
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.926
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.032
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.272
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

No. 1
type: MusicRecording
duration: PT2M41S
duration ms: 161826
explicit: false
by artist: Erik Satie
by artist: Klara Kormendi
in album: Classical Lullabies
  type: MusicAlbum
  date published: 2025-04-25
genre: classical
genre: classical-piano
genre: impressionism
isrc code: HKI199298726
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-28T06:40:10+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x63ed804882ee5fce7b7d63c0794130c99cbfd663c0d6f562e2f926cca7760899
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199298726
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ed804882ee5fce7b7d63c0794130c99cbfd663c0d6f562e2f926cca7760899. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199298726.
  date published: 2026-07-08T03:20:19Z
audio: No. 1
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 118.809
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.552
  additional property: Energy
    type: PropertyValue
    value: 0.028
  additional property: Speechiness
    type: PropertyValue
    value: 0.073
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.944
  additional property: Liveness
    type: PropertyValue
    value: 0.1
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.255
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.561
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

III. Clair de lune
type: MusicRecording
duration: PT5M14S
duration ms: 314333
explicit: false
by artist: Claude Debussy
by artist: François-Joël Thiollier
in album: Classical Lullabies
  type: MusicAlbum
  date published: 2025-04-25
genre: classical
genre: impressionism
genre: post-romantic-era
isrc code: HKI199241703
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T18:07:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xebd89d16da838d61497e1717fc149dce5b02500d532bd307b7ecfddb3e7d267d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199241703
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd89d16da838d61497e1717fc149dce5b02500d532bd307b7ecfddb3e7d267d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199241703.
  date published: 2026-07-08T03:20:19Z
audio: III. Clair de lune
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.067
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.345
  additional property: Energy
    type: PropertyValue
    value: 0.006
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.856
  additional property: Liveness
    type: PropertyValue
    value: 0.063
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.057
  additional property: Loudness (dB)
    type: PropertyValue
    value: -34.343
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

XIII. The Swan
type: MusicRecording
duration: PT3M6S
duration ms: 186360
explicit: false
by artist: Camille Saint-Saëns
by artist: Marian Lapsansky
by artist: Peter Toperczer
by artist: Slovak Radio Symphony Orchestra
by artist: Ondrej Lenard
in album: Classical Lullabies
  type: MusicAlbum
  date published: 2025-04-25
genre: classical
genre: late-romantic-era
genre: french-romanticism
isrc code: HKI199829613
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-01-28T18:11:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa251403b63b7494c69876ce160c2176e91226fbc31261dbf2bd9d32b3dc7d31d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199829613
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-07-08T03:20:19Z
audio: XIII. The Swan
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VII. Träumerei (Dreaming)
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duration: PT2M42S
duration ms: 162600
explicit: false
by artist: Robert Schumann
by artist: Jenő Jandó
in album: Classical Lullabies
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  date published: 2025-04-25
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: HKI199304008
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32581b18893fed77f22e3d2dd7d67f5b1e0538bf2cc25a142726475720bdf6b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199304008.
  date published: 2026-07-08T03:20:19Z
audio: VII. Träumerei (Dreaming)
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At the Cradle, Op. 68 No. 5
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duration: PT2M43S
duration ms: 163666
explicit: false
by artist: Edvard Grieg
by artist: Balazs Szokolay
in album: Classical Lullabies
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genre: classical
genre: late-romantic-era
genre: norwegian-classical
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceea61f466d460d8d0f4e6d817dd1e97ae2b932dc26ad4c6922202876ea3168b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199246113.
  date published: 2026-07-08T03:22:41Z
audio: At the Cradle, Op. 68 No. 5
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Berceuse - Petite reine [arr. E. Elgar for violin and piano]
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duration: PT3M24S
duration ms: 204213
explicit: false
by artist: Victor Beraud
by artist: Marat Bisengaliev
by artist: Benjamin Frith
in album: Classical Lullabies
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additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f35199380d63f7240afbde99ae017304f6ae80e9f7ff1842dddc6a05144c94. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191023906.
  date published: 2026-07-08T03:20:19Z
audio: Berceuse - Petite reine [arr. E. Elgar for violin and piano]
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No. 1, Lullaby in G Major
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duration: PT3M11S
duration ms: 191760
explicit: false
by artist: Antonín Dvořák
by artist: Stefan Veselka
in album: Classical Lullabies
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  date published: 2025-04-25
genre: classical
genre: late-romantic-era
genre: czech-classical
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: No. 1, Lullaby in G Major
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Méditation (Version for Violin & Piano)
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duration: PT5M20S
duration ms: 320000
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by artist: Jules Massenet
by artist: Takako Nishizaki
by artist: Jenő Jandó
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genre: classical
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd475c6a3df35eb2441b63ee7ed61b5c05c1b4321dc8774366004cbb71282b73. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199269710.
  date published: 2026-07-08T03:22:41Z
audio: Méditation (Version for Violin & Piano)
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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X. Berceuse
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duration: PT2M16S
duration ms: 136000
explicit: false
by artist: Alfredo Casella
by artist: Luca Ballerini
in album: Classical Lullabies
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: X. Berceuse
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  additional property: Danceability
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  additional property: Acousticness
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No. 3, Lento placido
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duration: PT3M29S
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by artist: Franz Liszt
by artist: Philip Thomson
in album: Classical Lullabies
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genre: classical
genre: late-romantic-era
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
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Méditation sur le premier prélude de piano de S. Bach, CG 89a "Ave Maria" (Arr. D. Sosin for Flute & Harp)
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II. Song
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XIV. Ninna Nanna, a Lullaby for Eugene
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Berceuse, Op. 47
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Solo Classical Piano
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Classical for Cats
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track: Chiquilin de Bachin (The Little Beggar Boy) [arr. J. Lenehan for 2 cellos and piano]

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OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53b1559cfa5e0c26b46b366dea38d2b26bb6641f6f013728629e874f77fc9c2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192031102.
date published: 2026-07-08T03:53:27Z

II. Adagio cantabile
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 97.597
additional property: Musical Key
  type: PropertyValue
  value: 8
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.301
additional property: Energy
  type: PropertyValue
  value: 0.005
additional property: Speechiness
  type: PropertyValue
  value: 0.042
additional property: Acousticness
  type: PropertyValue
  value: 0.994
additional property: Instrumentalness
  type: PropertyValue
  value: 0.896
additional property: Liveness
  type: PropertyValue
  value: 0.099
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.085
additional property: Loudness (dB)
  type: PropertyValue
  value: -40.124
additional property: Key Name
  type: PropertyValue
  value: Ab
additional property: Mode Name
  type: PropertyValue
  value: Major

Andante
type: MusicRecording
duration: PT4M37S
duration ms: 277400
explicit: false
by artist: Felix Mendelssohn
by artist: Maria Kliegel
by artist: Kristin Merscher
in album: Classical for Cats
  type: MusicAlbum
  date published: 2025-05-16
genre: classical
genre: early-romantic-era
genre: german-romanticism
isrc code: HKI199270317
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-28T06:05:02+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaf3961080400fe3b615b0424102cd413f20dc2fceb054f320082339511334d20
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199270317
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3961080400fe3b615b0424102cd413f20dc2fceb054f320082339511334d20. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199270317.
  date published: 2026-07-08T08:56:20Z
audio: Andante
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.075
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.147
  additional property: Energy
    type: PropertyValue
    value: 0.068
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.904
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.087
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.813
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Barcarolle (Arr. for Piano)
type: MusicRecording
duration: PT3M48S
duration ms: 228400
explicit: false
by artist: Jacques Offenbach
by artist: Péter Nagy
in album: Classical for Cats
  type: MusicAlbum
  date published: 2025-05-16
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: HKI199295806
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T21:09:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7b0a67bfe01c597827daba57cc9eecbda80fa7c904fb79ea82ecbea02470f6f4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199295806
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0a67bfe01c597827daba57cc9eecbda80fa7c904fb79ea82ecbea02470f6f4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199295806.
  date published: 2026-07-08T03:20:19Z
audio: Barcarolle (Arr. for Piano)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 98.226
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.328
  additional property: Energy
    type: PropertyValue
    value: 0.016
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.944
  additional property: Liveness
    type: PropertyValue
    value: 0.084
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.035
  additional property: Loudness (dB)
    type: PropertyValue
    value: -35.314
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

II. Romance
type: MusicRecording
duration: PT6M9S
duration ms: 369440
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Capella Istropolitana
by artist: Wolfgang Sobotka
in album: Classical for Cats
  type: MusicAlbum
  date published: 2025-05-16
genre: classical
genre: classical-era
isrc code: HKI199274702
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-01-28T21:36:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xce0e719cfca95da0ebc40d6ac033333a217864965629cf43f4518b091a2acad0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199274702
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0e719cfca95da0ebc40d6ac033333a217864965629cf43f4518b091a2acad0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199274702.
  date published: 2026-07-08T03:53:27Z
audio: II. Romance
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 147.711
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.329
  additional property: Energy
    type: PropertyValue
    value: 0.123
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.939
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.9
  additional property: Liveness
    type: PropertyValue
    value: 0.061
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.226
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.568
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Adagio for Strings, Op. 11
type: MusicRecording
duration: PT7M38S
duration ms: 458360
explicit: false
by artist: Samuel Barber
by artist: Royal Scottish National Orchestra
by artist: Marin Alsop
in album: Classical for Cats
  type: MusicAlbum
  date published: 2025-05-16
isrc code: HKI190049611
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T03:40:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4d8c9e3881cc5d0f8ab6b1f98b22deb57435f8e77b6b5adbccf5cc88f6bd0115
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190049611
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8c9e3881cc5d0f8ab6b1f98b22deb57435f8e77b6b5adbccf5cc88f6bd0115. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190049611.
  date published: 2026-07-08T03:20:19Z
audio: Adagio for Strings, Op. 11
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.277
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.112
  additional property: Energy
    type: PropertyValue
    value: 0.03
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.909
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.942
  additional property: Liveness
    type: PropertyValue
    value: 0.092
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.032
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.041
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

No. 3, Trallerliedchen (Humming Song)
type: MusicRecording
duration: PT0M45S
duration ms: 45560
explicit: false
by artist: Robert Schumann
by artist: Rico Gulda
in album: Classical for Cats
  type: MusicAlbum
  date published: 2025-05-16
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: HKI190118003
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T15:58:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xde8dcf7c92e04eb8cbddf8a21427faef827dbe16af82164de333a0ff01a28261
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190118003
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8dcf7c92e04eb8cbddf8a21427faef827dbe16af82164de333a0ff01a28261. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190118003.
  date published: 2026-07-08T03:20:19Z
audio: No. 3, Trallerliedchen (Humming Song)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 161.052
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.303
  additional property: Energy
    type: PropertyValue
    value: 0.096
  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.88
  additional property: Liveness
    type: PropertyValue
    value: 0.151
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.526
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.063
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

XIII. The Swan (Arr. P. Vidal for Cello & Orchestra)
type: MusicRecording
duration: PT3M9S
duration ms: 189000
explicit: false
by artist: Camille Saint-Saëns
by artist: Gabriel Schwabe
by artist: Malmö Symphony Orchestra
by artist: Marc Soustrot
in album: Classical for Cats
  type: MusicAlbum
  date published: 2025-05-16
genre: classical
genre: late-romantic-era
genre: french-romanticism
isrc code: HKI191715911
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T19:13:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x63a94c503111d60563ca9803528eb95b1d330b178a29d2b043e02331722f239a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191715911
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a94c503111d60563ca9803528eb95b1d330b178a29d2b043e02331722f239a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191715911.
  date published: 2026-07-08T03:20:19Z
audio: XIII. The Swan (Arr. P. Vidal for Cello & Orchestra)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 173.322
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.075
  additional property: Energy
    type: PropertyValue
    value: 0.026
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.968
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.915
  additional property: Liveness
    type: PropertyValue
    value: 0.126
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.062
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.472
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

I. Andante
type: MusicRecording
duration: PT3M30S
duration ms: 210826
explicit: false
by artist: Clara Schumann
by artist: Yoshiko Iwai
in album: Classical for Cats
  type: MusicAlbum
  date published: 2025-05-16
genre: classical
genre: early-romantic-era
genre: german-romanticism
isrc code: HKI199612801
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T09:34:10+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8013fe5add18f9683b6326f701fb03070495c89f1d69130fc5fdfc87ebb6dc53
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199612801
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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Rhapsody on a Theme of Paganini: Variation 18 (Arr. F. Kreisler for violin and piano)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
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II. Air ("On the G String")
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subject of: OpenTimestamps Proof of Existence
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No. 2 in E-Flat Major
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Sicilienne (Arr. D. Sosin)
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I: Volksliedchen
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No. 9, Schafe können sicher weiden (Transcr. L. Stokowski)
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Symphony No. 9 in E Minor, Op. 95, B. 178, "From the New World": II. Largo
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No. 1, Lento, ma non troppo
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