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album: At Home with Beethoven
album: The Sleeping Dogs Inspired Playlist
album: 111 Years of Deutsche Grammophon
album: Peaceful Piano Moods
album: So You Think You Don't Like Classical Music? Vol. 1
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Piano Concerto No. 21 in C Major, K. 467: II. Andante
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Partita No. 1 in B-Flat Major, BWV 825: I. Praeludium
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Lyric Pieces, Book 4, Op. 47: No. 3, Melodie
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Jeux d'eau, M. 30
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Jeux d'eau, M. 30
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Ballade No. 1 in G Minor, Op. 23
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subject of: OpenTimestamps Proof of Existence
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audio: Ballade No. 1 in G Minor, Op. 23
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Kinderszenen, Op. 15: VII. Träumerei
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subject of: OpenTimestamps Proof of Existence
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audio: Kinderszenen, Op. 15: VII. Träumerei
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Bagatelle No. 25 in A Minor, WoO 59 "Für Elise": Poco moto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Bagatelle No. 25 in A Minor, WoO 59 "Für Elise": Poco moto
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Consolations, S. 172: No. 3 in D-Flat Major. Lento, placido
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audio: Consolations, S. 172: No. 3 in D-Flat Major. Lento, placido
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Nun komm, der Heiden Heiland, BWV 659 - Arranged For Piano By Wilhelm Kempff
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  date published: 2026-07-08T03:20:19Z
audio: Nun komm, der Heiden Heiland, BWV 659 - Arranged For Piano By Wilhelm Kempff
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Piano Concerto No. 2 in B-Flat Major, Op. 83: III. Andante
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Piano Sonata No. 23 in F Minor, Op. 57 "Appassionata": III. Allegro ma non troppo
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Piano Concerto in A Minor, Op. 16: II. Adagio - attacca
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2 Arabesques, CD 74: No. 1, Andante con moto
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Children's Corner, CD 119: VI. Cakewalk
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Piano Concerto No. 1 in B-Flat Minor, Op. 23, TH 55: II. Andantino semplice - Prestissimo
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Gymnopédie No. 1: Lent et douloureux
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3 Intermezzi, Op. 117: No. 2 in B-Flat Minor. Andante non troppo e con molto espressione
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10 Preludes, Op. 23: No. 5 Alla marcia in G Minor
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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audio: 10 Preludes, Op. 23: No. 5 Alla marcia in G Minor
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At Home with Beethoven
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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: Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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track: Piano Sonata No. 14 in C-sharp minor, Op. 27, No. 2, "Moonlight": I. Adagio sostenuto
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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track: Piano Sonata No. 8 in C minor, Op. 13, "Pathétique": II. Adagio cantabile
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  subject of: OpenTimestamps Proof of Existence
  audio: Piano Sonata No. 8 in C minor, Op. 13, "Pathétique": II. Adagio cantabile
track: Beethoven's 5 Secrets
track: Moonlight
track: These Days

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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: 2026-07-08T03:20:19Z

Piano Sonata No. 8 in C minor, Op. 13, "Pathétique": II. Adagio cantabile
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Beethoven's 5 Secrets
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Beethoven's 5 Secrets
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Moonlight
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  date published: 2026-07-08T03:53:27Z
audio: Moonlight
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These Days
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  date published: 2026-07-08T08:56:20Z
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The Sleeping Dogs Inspired Playlist
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Estancia / Danzas del Ballet: II. Danza del trigo - Live At Centro de Acción Social por la Música, Sala Simón Bolivar, Caracas / 2008
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Pavane pour une infante défunte, M. 19 (Version for Orchestra)
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Peer Gynt, Op. 23, Act IV: No. 13, Prelude. Morning Mood
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Le nozze di Figaro, K. 492, Act II: No. 12, Voi che sapete
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Winterreise, D. 911: No. 5, Der Lindenbaum
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Carmina Burana: I. O fortuna
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24 Preludes, Op. 28: No. 3 in G Major. Vivace
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Cello Suite No. 1 in G Major, BWV 1007: I. Prélude
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subject of: OpenTimestamps Proof of Existence
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Suite No. 2 in B minor, BWV 1067: 7. Badinerie
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Messa da Requiem: IV. Sanctus
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6 Bagatelles, Op. 126: No. 4 in B Minor. Presto
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  date published: 2026-07-08T03:22:41Z
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Requiem, Op. 48: 4. Pie Jesu
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audio: Requiem, Op. 48: 4. Pie Jesu
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Symphony No. 88 in G Major, Hob. I:88 "The Letter V": IV. Finale. Allegro con spirito
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Lucrezia Borgia / Act II: "Il segreto per esser felici"
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Carmen, WD 31, Act I: Habanera. L'amour est un oiseau rebelle
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subject of: OpenTimestamps Proof of Existence
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audio: Carmen, WD 31, Act I: Habanera. L'amour est un oiseau rebelle
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Requiem, K. 626: IIIf. Lacrimosa
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subject of: OpenTimestamps Proof of Existence
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Pictures at an Exhibition (Orch. Ravel): II. The Old Castle
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Pictures at an Exhibition (Orch. Ravel): II. The Old Castle
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6 Lieder, Op. 17: No. 2, Ständchen
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
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The Well-Tempered Clavier, Book I, BWV 846-869: Prelude and Fugue No. 1 in C Major, BWV 846
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audio: The Well-Tempered Clavier, Book I, BWV 846-869: Prelude and Fugue No. 1 in C Major, BWV 846
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Canon and Gigue in D Major: I. Canon
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Violin Concerto No. 2 in E Major, BWV 1042: III. Allegro assai
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Tosca, Act III: E lucevan le stelle
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cf3080bd4272c02104a9991f0fdfc0b8789c63a25ee23407f6ddb363a9e0e7. 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/DEF057930720.
  date published: 2026-07-08T03:53:27Z
audio: Tosca, Act III: E lucevan le stelle
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  additional property: Danceability
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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Peaceful Piano Moods
type: MusicAlbum
date published: 2022-03-25
track: Before Dawn
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    type: MusicAlbum
    date published: 2022-03-25
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  genre: choral
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  additional property: CopyrightStatus
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071900150
  additional property: OTSTimestamp
    type: PropertyValue
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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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67a4e700665c7792fd14883a4b46cf2c7c15938c375a644ef42d3ab99e7e954. 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/GBF071900150.
    date published: 2026-07-08T03:22:41Z
  audio: Before Dawn
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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track: Main Theme - From "Missing"
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  by artist: Van-Anh Nguyen
  in album: Peaceful Piano Moods
    type: MusicAlbum
    date published: 2022-03-25
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUUM72100007
  additional property: OTSTimestamp
    type: PropertyValue
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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 0x00bcff004c8f6a6fcc72200e2487edc19aa456b7972add7182f440edb1cfee4b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUUM72100007.
    date published: 2026-07-02T03:55:08Z
  audio: Main Theme - From "Missing"
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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track: Ave verum corpus, K. 618
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  in album: Peaceful Piano Moods
    type: MusicAlbum
    date published: 2022-03-25
  popularity: 3
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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: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Ave verum corpus, K. 618
track: Kinderszenen, Op. 15: VII. Träumerei
track: Consolations, S. 172: No. 3 Lento, placido
track: The Arts and the Hours
track: Earned It - Solo Piano
track: Sleeping Lotus
track: Nocturne in G Minor
track: For Jóhann
track: …And at the Hour of Death
track: Frühlingsglaube
track: Dolly, Op. 56: I. Berceuse
track: One Day You Finally Knew
track: Piano Sonata No. 14 in C Minor, K. 457: II. Adagio
track: Una Mattina
track: Gnossiennes: III. Lent
track: 3 Gymnopédies: I. Lent et douloureux
track: My Father's Favourite - From "Sense & Sensibility"

OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071401980

OTSTimestamp
type: PropertyValue
value: 2026-07-08T08:56:20Z

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 0x974a63af302554bf43ba720b0da2e6d0020685376f768bd8967ec413895b05d3. 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/GBF071401980.
date published: 2026-07-08T08:56:20Z

Ave verum corpus, K. 618
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
  type: PropertyValue
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Kinderszenen, Op. 15: VII. Träumerei
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duration: PT3M1S
duration ms: 181373
explicit: false
by artist: Martha Argerich
in album: Peaceful Piano Moods
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  date published: 2022-03-25
popularity: 3
isrc code: DEF058330101
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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
  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 0x2534e1c4dee3c21d5a58342d96f4d13d4a4902b4c6612a1a3b43ecab8e1858f4. 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/DEF058330101.
  date published: 2026-07-08T03:53:27Z
audio: Kinderszenen, Op. 15: VII. Träumerei
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  additional property: Mode (Major/Minor)
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Consolations, S. 172: No. 3 Lento, placido
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duration: PT4M13S
duration ms: 253573
explicit: false
by artist: Daniel Barenboim
in album: Peaceful Piano Moods
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popularity: 3
genre: classical
genre: classical-piano
genre: opera
genre: chamber-music
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additional property: CopyrightStatus
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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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 0x68914b61af9028d4a5b1fca0c39d6225b1e789e4daa2e4910dd218b3d10154e2. 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/DEF057900552.
  date published: 2026-07-08T03:22:41Z
audio: Consolations, S. 172: No. 3 Lento, placido
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  additional property: Loudness (dB)
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  additional property: Key Name
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The Arts and the Hours
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duration: PT4M47S
duration ms: 287327
explicit: false
by artist: Víkingur Ólafsson
in album: Peaceful Piano Moods
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  date published: 2022-03-25
popularity: 4
genre: classical
genre: classical-piano
genre: minimalism
isrc code: DEN961903320
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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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  date published: 2026-07-08T03:53:27Z
audio: The Arts and the Hours
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  additional property: Mode (Major/Minor)
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  additional property: Acousticness
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  additional property: Key Name
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Earned It - Solo Piano
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duration: PT4M6S
duration ms: 246686
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by artist: Stephan Moccio
in album: Peaceful Piano Moods
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popularity: 3
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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: 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/GBUM72100437
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 0xfa91a18b42c9fae79bbc263abe6c4517bdab18cad02d58afca4c5b24a9973e37. 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/GBUM72100437.
  date published: 2026-07-08T08:56:20Z
audio: Earned It - Solo Piano
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.81
  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: 0.42
  additional property: Energy
    type: PropertyValue
    value: 0.006
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.949
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.175
  additional property: Loudness (dB)
    type: PropertyValue
    value: -34.469
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Sleeping Lotus
type: MusicRecording
duration: PT2M34S
duration ms: 154026
explicit: false
by artist: Joep Beving
in album: Peaceful Piano Moods
  type: MusicAlbum
  date published: 2022-03-25
popularity: 2
isrc code: NLF7S1400007
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T23:44:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x202f9679c0e2c8c54d7fd15891662eca727c6fe829652a80be58a9d62a704163
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/NLF7S1400007
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 0x202f9679c0e2c8c54d7fd15891662eca727c6fe829652a80be58a9d62a704163. 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/NLF7S1400007.
  date published: 2026-07-08T08:56:20Z
audio: Sleeping Lotus
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 140.328
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.304
  additional property: Energy
    type: PropertyValue
    value: 0.015
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.79
  additional property: Liveness
    type: PropertyValue
    value: 0.104
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.193
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.413
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Nocturne in G Minor
type: MusicRecording
duration: PT2M48S
duration ms: 168949
explicit: false
by artist: Ólafur Arnalds
by artist: Alice Sara Ott
in album: Peaceful Piano Moods
  type: MusicAlbum
  date published: 2022-03-25
popularity: 3
isrc code: GBUM71406943
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T01:32:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x68deb429fda4290e98e85d30b781ded9325006da88cbc6d42294ebaca085bcb4
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/GBUM71406943
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 0x68deb429fda4290e98e85d30b781ded9325006da88cbc6d42294ebaca085bcb4. 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/GBUM71406943.
  date published: 2026-07-08T03:22:41Z
audio: Nocturne in G Minor
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.297
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.28
  additional property: Energy
    type: PropertyValue
    value: 0.06
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.922
  additional property: Liveness
    type: PropertyValue
    value: 0.365
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.285
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.283
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

For Jóhann
type: MusicRecording
duration: PT3M0S
duration ms: 180114
explicit: false
by artist: Víkingur Ólafsson
in album: Peaceful Piano Moods
  type: MusicAlbum
  date published: 2022-03-25
popularity: 2
genre: classical
genre: classical-piano
genre: minimalism
isrc code: DEN961800450
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T03:23:48+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1ede1ff9bbaa06bbcefbc8934ff44c388282c56c2a9a0e9cb19142a57cfee6f9
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/DEN961800450
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 0x1ede1ff9bbaa06bbcefbc8934ff44c388282c56c2a9a0e9cb19142a57cfee6f9. 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/DEN961800450.
  date published: 2026-07-08T08:56:20Z
audio: For Jóhann
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.843
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.632
  additional property: Energy
    type: PropertyValue
    value: 0.124
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.927
  additional property: Liveness
    type: PropertyValue
    value: 0.074
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.251
  additional property: Loudness (dB)
    type: PropertyValue
    value: -34.498
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

…And at the Hour of Death
type: MusicRecording
duration: PT2M30S
duration ms: 150000
explicit: false
by artist: Víkingur Ólafsson
in album: Peaceful Piano Moods
  type: MusicAlbum
  date published: 2022-03-25
popularity: 3
genre: classical
genre: classical-piano
genre: minimalism
isrc code: DEN961800500
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T08:59:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb62ef76d100803139cd488d844c9b222ff6edb0203de0a258d4e66e9c41f21df
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/DEN961800500
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 0xb62ef76d100803139cd488d844c9b222ff6edb0203de0a258d4e66e9c41f21df. 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/DEN961800500.
  date published: 2026-07-08T08:56:20Z
audio: …And at the Hour of Death
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.77
  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: 0.514
  additional property: Energy
    type: PropertyValue
    value: 0.021
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.889
  additional property: Liveness
    type: PropertyValue
    value: 0.064
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.231
  additional property: Loudness (dB)
    type: PropertyValue
    value: -35.21
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Frühlingsglaube
type: MusicRecording
duration: PT3M31S
duration ms: 211403
explicit: false
by artist: Brigitte Engerer
in album: Peaceful Piano Moods
  type: MusicAlbum
  date published: 2022-03-25
popularity: 3
genre: classical
genre: classical-piano
isrc code: FRZ038401150
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T10:08:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x143592970e276a328f93159e09b6e8806274e59e02bfb83ce4a36e27ed6e58e6
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/FRZ038401150
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 0x143592970e276a328f93159e09b6e8806274e59e02bfb83ce4a36e27ed6e58e6. 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/FRZ038401150.
  date published: 2026-07-08T03:53:27Z
audio: Frühlingsglaube
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.333
  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: 0.426
  additional property: Energy
    type: PropertyValue
    value: 0.033
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.923
  additional property: Liveness
    type: PropertyValue
    value: 0.103
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.103
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.934
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Dolly, Op. 56: I. Berceuse
type: MusicRecording
duration: PT2M59S
duration ms: 179685
explicit: false
by artist: Katia Labèque
by artist: Marielle Labèque
in album: Peaceful Piano Moods
  type: MusicAlbum
  date published: 2022-03-25
popularity: 1
isrc code: NLA508692113
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-01T12:04:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1ae649431889941e47bc178985ff810e6475ff44908983108b867fc1bf5c29b0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957122
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957122
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508692113
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:39:04Z
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 0x1ae649431889941e47bc178985ff810e6475ff44908983108b867fc1bf5c29b0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLA508692113.
  date published: 2026-07-08T03:39:04Z
audio: Dolly, Op. 56: I. Berceuse
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 134.026
  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: 0.479
  additional property: Energy
    type: PropertyValue
    value: 0.023
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.901
  additional property: Liveness
    type: PropertyValue
    value: 0.085
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.216
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.255
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

One Day You Finally Knew
type: MusicRecording
duration: PT2M57S
duration ms: 177240
explicit: false
by artist: Chad Lawson
in album: Peaceful Piano Moods
  type: MusicAlbum
  date published: 2022-03-25
popularity: 2
isrc code: USUG12000362
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-28T20:26:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8a88bd5577ac4c0965e4f09bbc6d206509fbfdbb26dfb3fbbb304af6ca151ea2
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/USUG12000362
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
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Piano Sonata No. 14 in C Minor, K. 457: II. Adagio
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Una Mattina
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Gnossiennes: III. Lent
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3 Gymnopédies: I. Lent et douloureux
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My Father's Favourite - From "Sense & Sensibility"
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So You Think You Don't Like Classical Music? Vol. 1
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track: A Spotless Rose
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Recomposed By Max Richter: Vivaldi, The Four Seasons: Spring 1 - 2012
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6 Moments musicaux, Op. 16: No. 5 in D flat, Adagio sostenuto
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A Spotless Rose
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24 Préludes, Op. 28: 15. Sostenuto in D-Flat Major ("Raindrop")
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Eternal Source Of Light Divine (Ode For The Birthday Of Queen Anne), HWV 74
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Main Theme (From "Schindler's List")
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Lux Aurumque
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Lux Aurumque
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Appalachian Spring Suite: I. Very Slowly
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by artist: Los Angeles Philharmonic
by artist: Zubin Mehta
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Appalachian Spring Suite: I. Very Slowly
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Crucifixus (8-Part)
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by artist: The Sixteen
by artist: Harry Christophers
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Crucifixus (8-Part)
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Gnossienne No. 1
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by artist: Pascal Rogé
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Gnossienne No. 1
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Cello Suite No. 1 in G Major, BWV 1007: I. Prélude
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Cello Suite No. 1 in G Major, BWV 1007: I. Prélude
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Fantasia on a Theme by Thomas Tallis
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by artist: Iona Brown
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Fantasia on a Theme by Thomas Tallis
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When I Am Laid In Earth (Dido's Lament)
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popularity: 1
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: When I Am Laid In Earth (Dido's Lament)
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Quatre Motets, Op. 10: Ubi caritas et amor
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subject of: OpenTimestamps Proof of Existence
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audio: Quatre Motets, Op. 10: Ubi caritas et amor
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Spiegel im Spiegel
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subject of: OpenTimestamps Proof of Existence
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audio: Spiegel im Spiegel
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Lakmé / Act 1: Viens, Mallika, ... Dôme épais (Flower Duet)
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subject of: OpenTimestamps Proof of Existence
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Gymnopédie No. 1. Lent et douloureux
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  date published: 2026-07-08T08:56:20Z
audio: Gymnopédie No. 1. Lent et douloureux
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The Lamb
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audio: The Lamb
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Where I Sleep
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audio: Where I Sleep
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Celebration of Chopin: Encore!
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12 Études, Op. 10: No. 12 in C Minor "Revolutionary"
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24 Preludes, Op. 28: No. 11 in B Major. Vivace - Recorded 1974
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Fantaisie-Impromptu in C-Sharp Minor, Op. 66
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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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  date published: 2026-07-02T03:55:08Z
audio: 12 Etudes, Op. 25: No. 1 In A Flat Major - "Harp Study"
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Mazurka No. 5 in B-Flat Major, Op. 7 No. 1. Vivace
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by artist: Vladimir Ashkenazy
in album: Celebration of Chopin: Encore!
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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: 2026-07-02T03:55:08Z
audio: Mazurka No. 5 in B-Flat Major, Op. 7 No. 1. Vivace
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24 Préludes, Op. 28: No. 7 in A Major
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by artist: Martha Argerich
in album: Celebration of Chopin: Encore!
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genre: 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: 2026-07-02T03:30:09Z
audio: 24 Préludes, Op. 28: No. 7 in A Major
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Polonaise in B-Flat Major, KK IVa/1
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by artist: Vladimir Ashkenazy
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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
audio: Polonaise in B-Flat Major, KK IVa/1
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24 Préludes, Op. 28: No. 7 in A Major: Andantino
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by artist: Christoph Eschenbach
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genre: early-romantic-era
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: 24 Préludes, Op. 28: No. 7 in A Major: Andantino
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Waltz No. 8 in A-Flat Major, Op. 64 No. 3
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by artist: Vladimir Ashkenazy
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genre: classical
genre: early-romantic-era
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Waltz No. 8 in A-Flat Major, Op. 64 No. 3
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Les Sylphides: 3. Valse
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Les Sylphides: 3. Valse
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Waltz No. 14 in E Minor, KK IVa/15
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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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  value: 2026-07-02T03:55:08Z
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 0xb07ec2faf2d4780ff05996a3770a5751b59e355d0e0d66160b6bf3c4d560b846. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBF078140412.
  date published: 2026-07-02T03:55:08Z
audio: Waltz No. 14 in E Minor, KK IVa/15
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Mazurka in B flat major (KK 1223)
type: MusicRecording
duration: PT1M7S
duration ms: 67213
explicit: false
by artist: Frédéric Chopin
by artist: Lilya Zilberstein
in album: Celebration of Chopin: Encore!
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  date published: 2024-12-16
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: DEF059902580
additional property: CopyrightID
additional property: CopyrightStatus
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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
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
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 0x4162046f34c75f20a3ea1af0fa773640c4a4be49c84d78e0422011f509346f09. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF059902580.
  date published: 2026-07-02T03:55:08Z
audio: Mazurka in B flat major (KK 1223)
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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24 Préludes, Op. 28: No. 21 in B-Flat Major: Cantabile - Live
type: MusicRecording
duration: PT1M47S
duration ms: 107493
explicit: false
by artist: Frédéric Chopin
by artist: Seong-Jin Cho
in album: Celebration of Chopin: Encore!
  type: MusicAlbum
  date published: 2024-12-16
genre: classical
genre: early-romantic-era
genre: polish-classical
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC701552421
additional property: OTSTimestamp
  type: PropertyValue
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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 0xa053a802063102732f418d9bfb99ae1f177111cf3fbe515fbad1ca77d16db23a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLC701552421.
  date published: 2026-07-02T03:30:09Z
audio: 24 Préludes, Op. 28: No. 21 in B-Flat Major: Cantabile - Live
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  additional property: Danceability
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Mazurka in D major (KK 1224)
type: MusicRecording
duration: PT1M31S
duration ms: 91360
explicit: false
by artist: Frédéric Chopin
by artist: Lilya Zilberstein
in album: Celebration of Chopin: Encore!
  type: MusicAlbum
  date published: 2024-12-16
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: DEF059902590
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
  type: PropertyValue
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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 0x9c3f4779b9cb742d45354e7fbfb77d8c2e8858d4babfb03feaaae32287257983. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF059902590.
  date published: 2026-07-02T03:55:08Z
audio: Mazurka in D major (KK 1224)
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Energy
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  additional property: Acousticness
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Mazurka No. 34 in C Major, Op. 56 No. 2. Vivace
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duration: PT1M40S
duration ms: 100293
explicit: false
by artist: Frédéric Chopin
by artist: Maurizio Pollini
in album: Celebration of Chopin: Encore!
  type: MusicAlbum
  date published: 2024-12-16
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: DEN961801612
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
  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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f88fab95f08d772ce678ec044848f1c7800fd7c0258f0af42ade5b8f1707fe8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN961801612.
  date published: 2026-07-02T03:30:09Z
audio: Mazurka No. 34 in C Major, Op. 56 No. 2. Vivace
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  additional property: Danceability
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Waltz No. 6 in D Flat, Op. 64 No. 1 -"Minute"
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duration: PT1M35S
duration ms: 95333
explicit: false
by artist: Frédéric Chopin
by artist: Zoltán Kocsis
in album: Celebration of Chopin: Encore!
  type: MusicAlbum
  date published: 2024-12-16
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: NLA508101906
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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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
  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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1aa5feed445ae9010ab7e6927a7c680a5ffe978d99d3c052d140b4bcf63dc3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLA508101906.
  date published: 2026-07-02T03:55:08Z
audio: Waltz No. 6 in D Flat, Op. 64 No. 1 -"Minute"
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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Waltz No. 7 in C-Sharp Minor, Op. 64 No. 2
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duration: PT3M16S
duration ms: 196226
explicit: false
by artist: Frédéric Chopin
by artist: Maria João Pires
in album: Celebration of Chopin: Encore!
  type: MusicAlbum
  date published: 2024-12-16
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: DEN960801600
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ba9f534b35b7daa6b630f2d1f6ad0e7eaf84f0ac3816162739ae89df10982f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEN960801600.
  date published: 2026-07-02T03:55:08Z
audio: Waltz No. 7 in C-Sharp Minor, Op. 64 No. 2
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3 Ecossaises, Op. 72 No. 3
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by artist: Mikhail Pletnev
in album: Celebration of Chopin: Encore!
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  date published: 2024-12-16
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: DEF059603310
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: 3 Ecossaises, Op. 72 No. 3
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Mazurka No. 36 In A Minor Op. 59 No. 1
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by artist: Martha Argerich
in album: Celebration of Chopin: Encore!
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genre: early-romantic-era
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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audio: Mazurka No. 36 In A Minor Op. 59 No. 1
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12 Etudes, Op. 25: No. 2 in F minor
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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
audio: 12 Etudes, Op. 25: No. 2 in F minor
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Waltz No. 8 in A-Flat Major, Op. 64, No. 3 (Arr. Godowsky)
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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
audio: Waltz No. 8 in A-Flat Major, Op. 64, No. 3 (Arr. Godowsky)
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Variation sur la marche des Puritains de Bellini, KK Anh. Ia/5 (Var. 6 of Hexaméron by Liszt, S. 392)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Variation sur la marche des Puritains de Bellini, KK Anh. Ia/5 (Var. 6 of Hexaméron by Liszt, S. 392)
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Mazurka in G major (KK 896-900)
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by artist: Lilya Zilberstein
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genre: classical
genre: early-romantic-era
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Mazurka in G major (KK 896-900)
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Piano Sonata No. 2 in B-Flat Minor, Op. 35: IV. Finale (Presto)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Piano Sonata No. 2 in B-Flat Minor, Op. 35: IV. Finale (Presto)
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Mazurka No. 37 In A Flat Op. 59 No. 2
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subject of: OpenTimestamps Proof of Existence
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Tarantelle in A-Flat Major, Op. 43
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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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3 Mazurkas, Op. 63: No. 2 In F Minor. Lento
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subject of: OpenTimestamps Proof of Existence
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Waltz No. 5 in A-Flat Major, Op. 42
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Waltz No. 5 in A-Flat Major, Op. 42
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24 Préludes, Op. 28, C. 166-189: No. 9 Largo in E Major, C. 174 - Live
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audio: 24 Préludes, Op. 28, C. 166-189: No. 9 Largo in E Major, C. 174 - Live
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3 Mazurkas, Op. 59: No. 1 in A Minor. Moderato
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  date published: 2026-07-02T03:55:08Z
audio: 3 Mazurkas, Op. 59: No. 1 in A Minor. Moderato
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Mazurka No. 38 In F Sharp Minor Op. 59 No. 3
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Waltz No. 5 in A flat, Op. 42 - "Grande valse"
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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audio: Waltz No. 5 in A flat, Op. 42 - "Grande valse"
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12 Etudes, Op. 25: No. 4 In A Minor
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by artist: Valentina Lisitsa
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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
audio: 12 Etudes, Op. 25: No. 4 In A Minor
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Waltz No. 13 in D-Flat Major, Op. 70 No. 3
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Waltz No. 13 in D-Flat Major, Op. 70 No. 3
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Fugue in A Minor, KK IVc/2
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by artist: Vladimir Ashkenazy
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Fugue in A Minor, KK IVc/2
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3 Mazurkas, Op. 59: No. 3 in F-Sharp Minor. Vivace
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: 3 Mazurkas, Op. 59: No. 3 in F-Sharp Minor. Vivace
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12 Etudes, Op. 25: No. 2 in F Minor
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: 12 Etudes, Op. 25: No. 2 in F Minor
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Piano Sonata No. 3 in B Minor, Op. 58: II. Scherzo. Molto vivace - Live
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  date published: 2026-07-02T11:38:34Z
audio: Piano Sonata No. 3 in B Minor, Op. 58: II. Scherzo. Molto vivace - Live
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12 Etudes, Op. 25: No. 2 In F Minor
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subject of: OpenTimestamps Proof of Existence
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Introduction And Polonaise, Op. 3: Introduction - Lento - Excerpt / Live At Concert Hall, Kyoto / 2000
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Les Sylphides: 6. Prélude
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Mazurka No. 22 in G sharp minor, Op. 33 No. 1
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24 Préludes, Op. 28, C. 166-189: No. 20. Largo in C Minor, C. 185 - Live
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12 Etudes, Op. 25: No. 6 in G-Sharp Minor "Thirds"
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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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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Ballade No. 1 in G Minor, Op. 23 - Pt. 6
track: Ballade No. 1 in G Minor, Op. 23 - Pt. 8
track: Impromptu No. 1 in A-Flat, Op. 29 - Pt. 1
track: Impromptu No. 1 in A-Flat, Op. 29 - Pt. 2
track: Impromptu No. 1 in A-Flat, Op. 29 - Pt. 4
track: Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 1
track: Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 2
track: Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 3
track: Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 4
track: Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 1
track: Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 2
track: Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 4
track: Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 5
track: Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 6
track: Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 1
track: Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 3
track: Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 7
track: Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 8
track: Cantabile in B-Flat Major, KK IVb/6
track: 2 Bourrees, B160b: No. 1 In G Minor

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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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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 0xcd27200467f88ef70a80f485c58da9f89031c7b840d6a68e40fe259dd78c3210. 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/DEF056507166.
date published: 2026-07-08T08:56:20Z

Ballade No. 1 in G Minor, Op. 23 - Pt. 6
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Ballade No. 1 in G Minor, Op. 23 - Pt. 8
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duration: PT1M5S
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explicit: false
by artist: Frédéric Chopin
by artist: Tamás Vásáry
in album: "A Bright Sunday" with Chopin
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genre: classical
genre: early-romantic-era
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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 0x42724646c716d486f7c5f9bc45de7af1fcddbe1effa7fb9e116e948e98e6a460. 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/DEF056507168.
  date published: 2026-07-08T08:56:20Z
audio: Ballade No. 1 in G Minor, Op. 23 - Pt. 8
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Impromptu No. 1 in A-Flat, Op. 29 - Pt. 1
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by artist: Frédéric Chopin
by artist: Mikhail Pletnev
in album: "A Bright Sunday" with Chopin
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genre: classical
genre: early-romantic-era
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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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  date published: 2026-07-08T03:53:27Z
audio: Impromptu No. 1 in A-Flat, Op. 29 - Pt. 1
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Impromptu No. 1 in A-Flat, Op. 29 - Pt. 2
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by artist: Frédéric Chopin
by artist: Mikhail Pletnev
in album: "A Bright Sunday" with Chopin
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genre: classical
genre: early-romantic-era
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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: 2026-06-13T15:41:10Z
audio: Impromptu No. 1 in A-Flat, Op. 29 - Pt. 2
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Impromptu No. 1 in A-Flat, Op. 29 - Pt. 4
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by artist: Mikhail Pletnev
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genre: classical
genre: early-romantic-era
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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: Impromptu No. 1 in A-Flat, Op. 29 - Pt. 4
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Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 1
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by artist: Tamás Vásáry
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genre: classical
genre: early-romantic-era
genre: polish-classical
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:50:41Z
audio: Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 1
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Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 2
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by artist: Tamás Vásáry
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genre: early-romantic-era
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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: 2026-07-08T08:56:20Z
audio: Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 2
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Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 3
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by artist: Frédéric Chopin
by artist: Tamás Vásáry
in album: "A Bright Sunday" with Chopin
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genre: classical
genre: early-romantic-era
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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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  date published: 2026-07-08T03:53:27Z
audio: Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 3
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Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 4
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by artist: Frédéric Chopin
by artist: Tamás Vásáry
in album: "A Bright Sunday" with Chopin
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genre: classical
genre: early-romantic-era
genre: polish-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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  date published: 2026-07-08T03:22:41Z
audio: Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 4
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Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 1
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by artist: Frédéric Chopin
by artist: Tamás Vásáry
in album: "A Bright Sunday" with Chopin
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  date published: 2024-12-08
genre: classical
genre: early-romantic-era
genre: polish-classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 1
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Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 2
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duration ms: 44293
explicit: false
by artist: Frédéric Chopin
by artist: Tamás Vásáry
in album: "A Bright Sunday" with Chopin
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  date published: 2024-12-08
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: DEF056507172
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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: 2026-07-08T03:20:19Z
audio: Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 2
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Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 4
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explicit: false
by artist: Frédéric Chopin
by artist: Tamás Vásáry
in album: "A Bright Sunday" with Chopin
  type: MusicAlbum
  date published: 2024-12-08
genre: classical
genre: early-romantic-era
genre: polish-classical
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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: 2026-07-08T03:22:41Z
audio: Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 4
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Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 5
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by artist: Tamás Vásáry
in album: "A Bright Sunday" with Chopin
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genre: classical
genre: early-romantic-era
genre: polish-classical
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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 0x30b9e49d9402b63beec9706211a92bfbabcd9c607f3c24c3de552242d538308c. 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/DEF056507175.
  date published: 2026-07-08T03:22:41Z
audio: Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 5
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  additional property: Valence (Positivity)
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Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 6
type: MusicRecording
duration: PT0M39S
duration ms: 39546
explicit: false
by artist: Frédéric Chopin
by artist: Tamás Vásáry
in album: "A Bright Sunday" with Chopin
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  date published: 2024-12-08
genre: classical
genre: early-romantic-era
genre: polish-classical
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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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
  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 0x22edf3e35c4362eba31a4c8a6b05dc5fbaa26dcd250e6739196280989303ef66. 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/DEF056507176.
  date published: 2026-06-13T13:32:09Z
audio: Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 - Pt. 6
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Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 1
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duration: PT1M0S
duration ms: 60613
explicit: false
by artist: Frédéric Chopin
by artist: Martha Argerich
in album: "A Bright Sunday" with Chopin
  type: MusicAlbum
  date published: 2024-12-08
genre: classical
genre: early-romantic-era
genre: polish-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
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057409701
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2961b7ac3000bad1416f495bfe77102bebf10ec722cc177e05069e6a54832f67. 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/DEF057409701.
  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 1
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  additional property: Mode (Major/Minor)
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Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 3
type: MusicRecording
duration: PT0M38S
duration ms: 38320
explicit: false
by artist: Frédéric Chopin
by artist: Martha Argerich
in album: "A Bright Sunday" with Chopin
  type: MusicAlbum
  date published: 2024-12-08
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: DEF057409703
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
  type: PropertyValue
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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 0x18dfd801e0c469c8db984044d3c20ea0852c1a0b82fd847353b95d3a88fec478. 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/DEF057409703.
  date published: 2026-06-13T13:32:09Z
audio: Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 3
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  additional property: Mode (Major/Minor)
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  additional property: Energy
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Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 7
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duration: PT0M59S
duration ms: 59720
explicit: false
by artist: Frédéric Chopin
by artist: Martha Argerich
in album: "A Bright Sunday" with Chopin
  type: MusicAlbum
  date published: 2024-12-08
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: DEF057409707
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
  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 0xec1e99f137c9b9721430883d7395966b14f940e9977103fe49fdec89b51d338b. 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/DEF057409707.
  date published: 2026-07-08T03:22:41Z
audio: Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 7
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  additional property: Mode (Major/Minor)
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Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 8
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duration: PT1M19S
duration ms: 79106
explicit: false
by artist: Frédéric Chopin
by artist: Martha Argerich
in album: "A Bright Sunday" with Chopin
  type: MusicAlbum
  date published: 2024-12-08
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: DEF057409708
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
  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 0xa4b24402d3bf5625e8eedb57eded906017da54008a74e163709fb817f9115315. 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/DEF057409708.
  date published: 2026-07-08T03:22:41Z
audio: Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre - Pt. 8
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  additional property: Mode (Major/Minor)
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Cantabile in B-Flat Major, KK IVb/6
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duration: PT1M1S
duration ms: 61000
explicit: false
by artist: Frédéric Chopin
by artist: Nikita Magaloff
in album: "A Bright Sunday" with Chopin
  type: MusicAlbum
  date published: 2024-12-08
genre: classical
genre: early-romantic-era
genre: polish-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: 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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1815e39725569bf3f4e08814f9d0444c62e056dc4fc3237a6e8de05b169bb7f5. 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/NLA507722829.
  date published: 2026-07-08T03:20:19Z
audio: Cantabile in B-Flat Major, KK IVb/6
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2 Bourrees, B160b: No. 1 In G Minor
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by artist: Anatol Ugorski
in album: "A Bright Sunday" with Chopin
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  date published: 2024-12-08
genre: classical
genre: early-romantic-era
genre: polish-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: 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 0xd3b4d6587252c601c091a1d8d0e1efe6371fd346f2e7f75bd78530aa91ac93e0. 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/DEF059902330.
  date published: 2026-06-13T13:32:09Z
audio: 2 Bourrees, B160b: No. 1 In G Minor
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 166.126
  additional property: Musical Key
    type: PropertyValue
    value: 7