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genre: classical
genre: classical piano
description: Ivan Moravec (9 November 1930 – 27 July 2015) was a Czech concert pianist whose performing and recording career spanned nearly half a century. Media and critics worldwide often called Moravec "a poet
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album: Chopin: Piano Works
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  track: 24 Preludes for Piano, Op. 28: No. 1 in C Major, Agitato
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  track: Ballade No. 2 in F Major, Op. 38
  track: 24 Preludes for Piano, Op. 28: No. 2 in A Minor, Lento
  track: Ballade No. 3 in A-Flat Major, Op. 47
  track: 24 Preludes for Piano, Op. 28: No. 3 in G Major, Vivace, ma non troppo
  track: Piano Sonata No. 14, Op. 27: I. Adagio sostenuto
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  track: 24 Preludes for Piano, Op. 28: No. 4 in E Minor, Largo
  track: Piano Concerto No. 23 in A Major, K. 488: II. Adagio
  track: 24 Preludes for Piano, Op. 28: No. 6 in B Minor, Lento assai
  track: 24 Preludes for Piano, Op. 28: No. 7 in A Major, Andantino
album: Ivan Moravec Plays Chopin, Vol. 2
album: Ivan Moravec Edition
album: Piano & Violin Concertos - Sir Neville Marriner - Academy of St. Martin in the Fields
album: Mozart: Piano Concerto No. 25, Fantasia in C Minor
album: Bach, Beethoven, Debussy, Chopin, Mozart: Twelfth Night Recital Prague 1987
album: Fišer, Jirko, Korte: Piano Sonatas
album: Dvořák: Biblical Songs
album: Wolfgang Amadeus Mozart: Piano Concertos Nos. 24 & 25 (Famous Classical Music)
album: Wolfgang Amadeus Mozart: Piano Concertos Nos. 20 & 23 (Famous Classical Music)
album: Mozart: Piano Concertos Nos. 20, 23, 24, 25
album: Chopin Piano Nocturnes
album: Chopin: Scherzi, Etudes and Mazurkas
album: Schumann, R.: Piano Cocnerto, Op. 54 / BRAHMS, J.: Piano Concerto No. 1
album: Beethoven, Brahms, Chopin: Live in Brussels
album: Chopin: Piano Sonata No. 2 / Berceuse / Mazurkas Nos. 3, 17, And 20 / Fantasie In F Minor
album: Mozart: Piano Concertos Nos. 24 and 25
album: Brahms: Piano Concertos Nos. 1 & 2
album: Chopin: Nocturnes - Complete
album: Beethoven and Ravel: Piano Concertos - Franck: Symphonic Variations
album: Ivan Moravec Plays Chopin, Vol. 1
album: Beethoven: Sonatas Pathétique, Moonlight & Les adieux
album: Mozart: Piano Concertos Nos. 20 and 23
album: Live in Prague
album: Wolfgang Amadeus Mozart Piano Concertos (no.24,25) Ivan Moravec, Piano [Classical Masterpieces]
album: Wolfgang Amadeus Mozart Piano Concertos (no.20,23) Ivan Moravec, Piano [Classical Masterpieces]
album: Mozart: Piano Concertos Nos. 14, 23 & 25
album: Dvořák: Piano Concerto
album: Brahms: Piano Concerto No. 2
album: Chopin & Debussy: Piano Works
album: Dvořák: Symphony No. 7 and Piano Concerto
album: Brahms: Piano Concerto No. 1 and Intermezzo
album: Beethoven: Symphony No. 5, Piano Concerto No. 3
album: Piano Recital: Bach, Mozart, and Schumann
album: Ivan Moravec Live: Smetana, Suk, Korte
album: Ivan Moravec Plays Chopin
album: Debussy: Images, L. 110 & L. 111 & Other Piano Works
album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
album: Mozart: Piano Sonatas, K. 333, 457 & 570 - Fantasia in C Minor, K. 475
track: Berceuse in D-Flat Major, Op. 57

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Ballade No. 2 in F Major, Op. 38
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24 Preludes for Piano, Op. 28: No. 2 in A Minor, Lento
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subject of: OpenTimestamps Proof of Existence
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Ballade No. 3 in A-Flat Major, Op. 47
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24 Preludes for Piano, Op. 28: No. 3 in G Major, Vivace, ma non troppo
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Piano Sonata No. 14, Op. 27: I. Adagio sostenuto
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subject of: OpenTimestamps Proof of Existence
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Ballade No. 4 in F Minor, Op. 52
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24 Preludes for Piano, Op. 28: No. 4 in E Minor, Largo
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Piano Concerto No. 23 in A Major, K. 488: II. Adagio
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24 Preludes for Piano, Op. 28: No. 6 in B Minor, Lento assai
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24 Preludes for Piano, Op. 28: No. 7 in A Major, Andantino
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track: Biblical Songs, Op. 99, B. 185: No. 7, By the Shore of the River Babylon. Andante
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track: Biblical Songs, Op. 99, B. 185: No. 10, Oh, Sing unto the Lord a Joyful Song. Allegro moderato
track: Gypsy Songs, Op. 55, B. 104: No. 4, Strange, But When My Old Mother Taught Me to Sing. Andante con moto

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Biblical Songs, Op. 99, B. 185: No. 4, Oh, My Shepherd Is the Lord. Andante
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by artist: Věra Soukupová
by artist: Ivan Moravec
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popularity: 1
genre: classical
genre: late-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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T03:13:03Z
audio: Biblical Songs, Op. 99, B. 185: No. 7, By the Shore of the River Babylon. Andante
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Biblical Songs, Op. 99, B. 185: No. 8, Oh, Lord, Have Mercy and Turn Thou Thy Face to Me. Andante
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by artist: Antonín Dvořák
by artist: Věra Soukupová
by artist: Ivan Moravec
in album: Dvořák: Biblical Songs
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popularity: 1
genre: classical
genre: late-romantic-era
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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: 2026-07-31T20:22:46Z
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Biblical Songs, Op. 99, B. 185: No. 9, My Eyes Will I to the Hills Lift Up. Andante con moto
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by artist: Věra Soukupová
by artist: Ivan Moravec
in album: Dvořák: Biblical Songs
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popularity: 1
genre: classical
genre: late-romantic-era
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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: Biblical Songs, Op. 99, B. 185: No. 9, My Eyes Will I to the Hills Lift Up. Andante con moto
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Biblical Songs, Op. 99, B. 185: No. 10, Oh, Sing unto the Lord a Joyful Song. Allegro moderato
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by artist: Antonín Dvořák
by artist: Věra Soukupová
by artist: Ivan Moravec
in album: Dvořák: Biblical Songs
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popularity: 1
genre: classical
genre: late-romantic-era
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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: 2026-07-31T17:29:52Z
audio: Biblical Songs, Op. 99, B. 185: No. 10, Oh, Sing unto the Lord a Joyful Song. Allegro moderato
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Gypsy Songs, Op. 55, B. 104: No. 4, Strange, But When My Old Mother Taught Me to Sing. Andante con moto
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by artist: Věra Soukupová
by artist: Ivan Moravec
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T01:44:32Z
audio: Gypsy Songs, Op. 55, B. 104: No. 4, Strange, But When My Old Mother Taught Me to Sing. Andante con moto
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Wolfgang Amadeus Mozart: Piano Concertos Nos. 24 & 25 (Famous Classical Music)
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Wolfgang Amadeus Mozart: Piano Concertos Nos. 20 & 23 (Famous Classical Music)
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Mozart: Piano Concertos Nos. 20, 23, 24, 25
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Chopin Piano Nocturnes
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T13:04:34Z
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030b4f59e856fc918c89413530025f8e76545bd02ed5267cf5ed1fd74d8b9e56. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USA371452327.
    date published: 2026-07-31T12:24:41Z
  audio: Nocturne No. 2 In E-flat
    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: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
      value: 0.041
    additional property: Acousticness
      type: PropertyValue
      value: 0.99
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.921
    additional property: Liveness
      type: PropertyValue
      value: 0.08
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.07
    additional property: Loudness (dB)
      type: PropertyValue
      value: -34.436
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Nocturne, No. 3 In B
  type: MusicRecording
  duration: PT6M27S
  duration ms: 387426
  explicit: false
  by artist: Frédéric Chopin
  in album: Chopin Piano Nocturnes
    type: MusicAlbum
    date published: 2011-09-01
  popularity: 1
  genre: classical
  genre: early-romantic-era
  genre: polish-classical
  isrc code: USA371452328
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T19:58:59+00:00
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Nocturne, No. 3 In B
track: Nocturne, No. 4 In F
track: Nocturne, No. 5 In F-sharp
track: Nocturne, No. 6 In G Minor

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x2ae453560e3122085d8681fd04a6d49fc4812431a50365f3446b2c4163a4b179

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957120

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957120

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371452328

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:22:41Z

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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae453560e3122085d8681fd04a6d49fc4812431a50365f3446b2c4163a4b179. 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/USA371452328.
date published: 2026-07-08T03:22:41Z

Nocturne, No. 3 In B
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 100.637
additional property: Musical Key
  type: PropertyValue
  value: 6
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.24
additional property: Energy
  type: PropertyValue
  value: 0.013
additional property: Speechiness
  type: PropertyValue
  value: 0.044
additional property: Acousticness
  type: PropertyValue
  value: 0.989
additional property: Instrumentalness
  type: PropertyValue
  value: 0.933
additional property: Liveness
  type: PropertyValue
  value: 0.081
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.065
additional property: Loudness (dB)
  type: PropertyValue
  value: -31.679
additional property: Key Name
  type: PropertyValue
  value: F#
additional property: Mode Name
  type: PropertyValue
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Nocturne, No. 4 In F
type: MusicRecording
duration: PT4M30S
duration ms: 270400
explicit: false
by artist: Frédéric Chopin
in album: Chopin Piano Nocturnes
  type: MusicAlbum
  date published: 2011-09-01
popularity: 1
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USA371452329
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T11:51:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2d20b51cc3299aca82dfa26135740c63df37134723f5cf0035b775ad530c6d36
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960397
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960397
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371452329
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d20b51cc3299aca82dfa26135740c63df37134723f5cf0035b775ad530c6d36. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USA371452329.
  date published: 2026-07-31T12:24:41Z
audio: Nocturne, No. 4 In F
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.821
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.269
  additional property: Energy
    type: PropertyValue
    value: 0.006
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.988
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.852
  additional property: Liveness
    type: PropertyValue
    value: 0.052
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.074
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.065
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Nocturne, No. 5 In F-sharp
type: MusicRecording
duration: PT4M7S
duration ms: 247266
explicit: false
by artist: Frédéric Chopin
in album: Chopin Piano Nocturnes
  type: MusicAlbum
  date published: 2011-09-01
popularity: 1
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USA371452330
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T11:57:12+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x589a286d5ec8300507b81dc0f550f41d902be0899246acf12c3ebd52abd7fd35
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960397
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960397
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371452330
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589a286d5ec8300507b81dc0f550f41d902be0899246acf12c3ebd52abd7fd35. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USA371452330.
  date published: 2026-07-31T12:24:41Z
audio: Nocturne, No. 5 In F-sharp
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.085
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.262
  additional property: Energy
    type: PropertyValue
    value: 0.013
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.918
  additional property: Liveness
    type: PropertyValue
    value: 0.083
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.085
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.202
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
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Nocturne, No. 6 In G Minor
type: MusicRecording
duration: PT4M39S
duration ms: 279373
explicit: false
by artist: Frédéric Chopin
in album: Chopin Piano Nocturnes
  type: MusicAlbum
  date published: 2011-09-01
popularity: 1
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USA371452331
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T13:05:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x54075dc40fbe7e7a83e8f6a8ed0d0d63132a5655d1c20f2aab6983bb550e50b7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371452331
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54075dc40fbe7e7a83e8f6a8ed0d0d63132a5655d1c20f2aab6983bb550e50b7. 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/USA371452331.
  date published: 2026-07-08T03:20:19Z
audio: Nocturne, No. 6 In G Minor
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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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
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
    value: 0.431
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Chopin: Scherzi, Etudes and Mazurkas
type: MusicAlbum
date published: 2011-06-17

Schumann, R.: Piano Cocnerto, Op. 54 / BRAHMS, J.: Piano Concerto No. 1
type: MusicAlbum
date published: 2011-02-01

Beethoven, Brahms, Chopin: Live in Brussels
type: MusicAlbum
date published: 2009-08-28
track: 6 Klavierstücke, Op. 118: No. 2 in A Major, Intermezzo
  type: MusicRecording
  duration: PT6M28S
  duration ms: 388386
  explicit: false
  by artist: Johannes Brahms
  by artist: Ivan Moravec
  in album: Beethoven, Brahms, Chopin: Live in Brussels
    type: MusicAlbum
    date published: 2009-08-28
  genre: classical
  genre: german-romanticism
  genre: classical-piano
  genre: late-romantic-era
  genre: chamber-music
  genre: orchestral
  isrc code: CZA160901673
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T05:21:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7fea69a6ddfed490595203ea413bc795de2b08873fb34d1406be111ae2998ea5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960352
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960352
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA160901673
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T05:48:30Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fea69a6ddfed490595203ea413bc795de2b08873fb34d1406be111ae2998ea5. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/CZA160901673.
    date published: 2026-07-31T05:48:30Z
  audio: 6 Klavierstücke, Op. 118: No. 2 in A Major, Intermezzo
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 99.352
    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.353
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
      value: 0.994
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.937
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.111
    additional property: Loudness (dB)
      type: PropertyValue
      value: -32.921
    additional property: Key Name
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    additional property: Mode Name
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Chopin: Piano Sonata No. 2 / Berceuse / Mazurkas Nos. 3, 17, And 20 / Fantasie In F Minor
type: MusicAlbum
date published: 2007-10-09
track: Berceuse In D Flat Major, Op. 57 - Berceuse In D Flat Major, Op. 57
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  duration: PT5M1S
  duration ms: 301800
  explicit: false
  by artist: Frédéric Chopin
  by artist: Ivan Moravec
  in album: Chopin: Piano Sonata No. 2 / Berceuse / Mazurkas Nos. 3, 17, And 20 / Fantasie In F Minor
    type: MusicAlbum
    date published: 2007-10-09
  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: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc1b2e748f9a21797a0be80b03222b07bc73c916fb5d17c7dea0233f0884c869a
  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/USZGD0300184
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b2e748f9a21797a0be80b03222b07bc73c916fb5d17c7dea0233f0884c869a. 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/USZGD0300184.
    date published: 2026-07-08T03:22:41Z
  audio: Berceuse In D Flat Major, Op. 57 - Berceuse In D Flat Major, Op. 57
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 97.792
    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
      type: PropertyValue
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.336
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
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    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-23T08:51:03+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x59a651863db1fcd9c7220acd06ae2e1e09158e3e4f0677ca5a544733b3964483
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523301
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a651863db1fcd9c7220acd06ae2e1e09158e3e4f0677ca5a544733b3964483. 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/USNO16523301.
    date published: 2026-07-02T03:55:08Z
  audio: B-flat minor, op. 9 n? 1
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 101.271
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.239
    additional property: Energy
      type: PropertyValue
      value: 0.007
    additional property: Speechiness
      type: PropertyValue
      value: 0.043
    additional property: Acousticness
      type: PropertyValue
      value: 0.984
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.916
    additional property: Liveness
      type: PropertyValue
      value: 0.074
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.036
    additional property: Loudness (dB)
      type: PropertyValue
      value: -32.558
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: E flat major, Op 9, n? 2
  type: MusicRecording
  duration: PT4M31S
  duration ms: 271040
  explicit: false
  by artist: Frédéric Chopin
  by artist: Ivan Moravec
  in album: Chopin: Nocturnes - Complete
    type: MusicAlbum
    date published: 2005-11-01
  genre: classical
  genre: early-romantic-era
  genre: polish-classical
  isrc code: USNO16523302
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-23T08:51:36+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdbe69b7e242b940cec2a2a27d399cd4cb66f6a0f60c89b5d7512be08e53e6462
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523302
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe69b7e242b940cec2a2a27d399cd4cb66f6a0f60c89b5d7512be08e53e6462. 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/USNO16523302.
    date published: 2026-07-02T03:55:08Z
  audio: E flat major, Op 9, n? 2
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 94.547
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.414
    additional property: Energy
      type: PropertyValue
      value: 0.007
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.989
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.91
    additional property: Liveness
      type: PropertyValue
      value: 0.07
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.077
    additional property: Loudness (dB)
      type: PropertyValue
      value: -34.426
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: B major, op. 9, n?3
  type: MusicRecording
  duration: PT6M29S
  duration ms: 389333
  explicit: false
  by artist: Frédéric Chopin
  by artist: Ivan Moravec
  in album: Chopin: Nocturnes - Complete
    type: MusicAlbum
    date published: 2005-11-01
  genre: classical
  genre: early-romantic-era
  genre: polish-classical
  isrc code: USNO16523303
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-27T08:06:29+00:00
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: B major, op. 9, n?3
track: F major, op. 15, n? 2
track: F sharp major, op. 15 n? 2
track: G minor, op. 15, n? 3
track: C sharp minor, op. 27, n? 1
track: D flat major, Op. 27 n? 2
track: B major, Op. 32, n? 1
track: A flat major, Op. 32 n? 2
track: G minor, Op. 37, n? 1
track: G major, Op. 37 n? 2
track: C minor, Op.48 n?1
track: F sharp minor, Op. 48, n? 2
track: F minor, Op. 55, n? 1
track: E flat major, Op. 55, n? 1
track: B major, Op. 62 n? 1
track: E major, Op. 62, n? 2
track: E minor, Op. 72, n? 1

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x3fa096ef058bb0c2250d7bcdcbadc9d9a9e277d104a2274c10fce26c5561b864

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956304

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956304

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523303

OTSTimestamp
type: PropertyValue
value: 2026-07-02T03:55:08Z

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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa096ef058bb0c2250d7bcdcbadc9d9a9e277d104a2274c10fce26c5561b864. 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/USNO16523303.
date published: 2026-07-02T03:55:08Z

B major, op. 9, n?3
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 98.09
additional property: Musical Key
  type: PropertyValue
  value: 6
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.25
additional property: Energy
  type: PropertyValue
  value: 0.014
additional property: Speechiness
  type: PropertyValue
  value: 0.041
additional property: Acousticness
  type: PropertyValue
  value: 0.989
additional property: Instrumentalness
  type: PropertyValue
  value: 0.926
additional property: Liveness
  type: PropertyValue
  value: 0.087
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.067
additional property: Loudness (dB)
  type: PropertyValue
  value: -31.693
additional property: Key Name
  type: PropertyValue
  value: F#
additional property: Mode Name
  type: PropertyValue
  value: Major

F major, op. 15, n? 2
type: MusicRecording
duration: PT4M29S
duration ms: 269933
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523304
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T08:06:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9f7286aaf328567697bf6474ba3023815bcfb31209f22c63d2caa1365e49fb35
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523304
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7286aaf328567697bf6474ba3023815bcfb31209f22c63d2caa1365e49fb35. 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/USNO16523304.
  date published: 2026-07-02T03:55:08Z
audio: F major, op. 15, n? 2
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.727
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.236
  additional property: Energy
    type: PropertyValue
    value: 0.006
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.988
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.92
  additional property: Liveness
    type: PropertyValue
    value: 0.048
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.07
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.059
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

F sharp major, op. 15 n? 2
type: MusicRecording
duration: PT4M4S
duration ms: 244733
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523305
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T16:40:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3e869e3719faddea52d2f7c440421ca8ecd2b73e698f6cd4ff359ac329bc4ec4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523305
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e869e3719faddea52d2f7c440421ca8ecd2b73e698f6cd4ff359ac329bc4ec4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USNO16523305.
  date published: 2026-07-02T05:09:12Z
audio: F sharp major, op. 15 n? 2
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.969
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.238
  additional property: Energy
    type: PropertyValue
    value: 0.013
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.904
  additional property: Liveness
    type: PropertyValue
    value: 0.072
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.095
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.332
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

G minor, op. 15, n? 3
type: MusicRecording
duration: PT4M40S
duration ms: 280746
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523306
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T08:08:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdfb7b38f24617291ec23047dca5ec6350b22761167e19eefb024719f01e25644
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523306
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb7b38f24617291ec23047dca5ec6350b22761167e19eefb024719f01e25644. 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/USNO16523306.
  date published: 2026-07-02T03:55:08Z
audio: G minor, op. 15, n? 3
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 117.444
  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: 0.426
  additional property: Energy
    type: PropertyValue
    value: 0.003
  additional property: Speechiness
    type: PropertyValue
    value: 0.061
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.947
  additional property: Liveness
    type: PropertyValue
    value: 0.092
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.117
  additional property: Loudness (dB)
    type: PropertyValue
    value: -38.034
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

C sharp minor, op. 27, n? 1
type: MusicRecording
duration: PT5M22S
duration ms: 322520
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523307
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T05:31:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0ad4a85868e22c43d4924ed0965bfc51cc9895a5c8d3c0e4921da9de4d81a33c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523307
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad4a85868e22c43d4924ed0965bfc51cc9895a5c8d3c0e4921da9de4d81a33c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USNO16523307.
  date published: 2026-07-06T06:56:49Z
audio: C sharp minor, op. 27, n? 1
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 87.635
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.249
  additional property: Energy
    type: PropertyValue
    value: 0.007
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.869
  additional property: Liveness
    type: PropertyValue
    value: 0.119
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.053
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.563
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

D flat major, Op. 27 n? 2
type: MusicRecording
duration: PT7M27S
duration ms: 447933
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523308
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T16:41:10+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x15c0c0d0dd96b1d4a032a159be5ef1fd5129a985ce14f29cca63948597e81cea
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523308
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c0c0d0dd96b1d4a032a159be5ef1fd5129a985ce14f29cca63948597e81cea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USNO16523308.
  date published: 2026-07-02T05:09:12Z
audio: D flat major, Op. 27 n? 2
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 92.414
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.356
  additional property: Energy
    type: PropertyValue
    value: 0.004
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.923
  additional property: Liveness
    type: PropertyValue
    value: 0.125
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.057
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.49
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

B major, Op. 32, n? 1
type: MusicRecording
duration: PT5M8S
duration ms: 308626
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523309
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T08:08:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xff0b72da0d37c1b0ac05a2416362a4bb24e11ece512f20f0680ef73c0c4d17fd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523309
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0b72da0d37c1b0ac05a2416362a4bb24e11ece512f20f0680ef73c0c4d17fd. 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/USNO16523309.
  date published: 2026-07-02T03:55:08Z
audio: B major, Op. 32, n? 1
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.331
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.277
  additional property: Energy
    type: PropertyValue
    value: 0.006
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.923
  additional property: Liveness
    type: PropertyValue
    value: 0.074
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.098
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.745
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major

A flat major, Op. 32 n? 2
type: MusicRecording
duration: PT5M44S
duration ms: 344706
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523310
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-26T05:33:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7f533a6e045220a82938271bef174da53c8636ba1e6da6dd822ab95bfd822e2c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523310
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f533a6e045220a82938271bef174da53c8636ba1e6da6dd822ab95bfd822e2c. 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/USNO16523310.
  date published: 2026-07-02T03:55:08Z
audio: A flat major, Op. 32 n? 2
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.707
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.215
  additional property: Energy
    type: PropertyValue
    value: 0.013
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.94
  additional property: Liveness
    type: PropertyValue
    value: 0.106
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.139
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.333
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

G minor, Op. 37, n? 1
type: MusicRecording
duration: PT6M22S
duration ms: 382706
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523311
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T03:41:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6f30927e628c3249627efd062fdd5674ab22d344b14ca7182e1b4dcd3a30d214
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523311
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f30927e628c3249627efd062fdd5674ab22d344b14ca7182e1b4dcd3a30d214. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USNO16523311.
  date published: 2026-07-06T06:56:49Z
audio: G minor, Op. 37, n? 1
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 100.211
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.438
  additional property: Energy
    type: PropertyValue
    value: 0.006
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.944
  additional property: Liveness
    type: PropertyValue
    value: 0.057
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.142
  additional property: Loudness (dB)
    type: PropertyValue
    value: -35.302
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

G major, Op. 37 n? 2
type: MusicRecording
duration: PT5M47S
duration ms: 347826
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523312
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T11:29:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xda2a27a7279a7d9cd7f22b94d9f2402a2e90a956d74f048e15a610a5703e79ee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960101
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960101
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523312
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T11:46:30Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2a27a7279a7d9cd7f22b94d9f2402a2e90a956d74f048e15a610a5703e79ee. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/USNO16523312.
  date published: 2026-07-29T11:46:30Z
audio: G major, Op. 37 n? 2
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 93.371
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.282
  additional property: Energy
    type: PropertyValue
    value: 0.013
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.923
  additional property: Liveness
    type: PropertyValue
    value: 0.084
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.803
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

C minor, Op.48 n?1
type: MusicRecording
duration: PT6M15S
duration ms: 375440
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523313
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T08:06:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x175115042d5487d5229b3b81b08cc675d13c6f042472ce6cac05123dea51b2bb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523313
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175115042d5487d5229b3b81b08cc675d13c6f042472ce6cac05123dea51b2bb. 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/USNO16523313.
  date published: 2026-07-02T03:55:08Z
audio: C minor, Op.48 n?1
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.836
  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: 0.377
  additional property: Energy
    type: PropertyValue
    value: 0.063
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.86
  additional property: Liveness
    type: PropertyValue
    value: 0.07
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.586
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

F sharp minor, Op. 48, n? 2
type: MusicRecording
duration: PT6M59S
duration ms: 419000
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523314
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T12:47:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x94cac092bbe98272c89ce1de92b01528590020cb80b85675059ed1857d8626ce
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959132
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959132
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523314
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T13:20:46Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-07-22T13:20:46Z
audio: F sharp minor, Op. 48, n? 2
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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
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.74
  additional property: Key Name
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    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

F minor, Op. 55, n? 1
type: MusicRecording
duration: PT5M2S
duration ms: 302360
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523315
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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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523315
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffa25abbc1b44ab1d01c2825f5ea01ca98b450bcfd6d35a7ddeaf1224babad4. 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/USNO16523315.
  date published: 2026-07-02T03:55:08Z
audio: F minor, Op. 55, n? 1
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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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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E flat major, Op. 55, n? 1
type: MusicRecording
duration: PT4M19S
duration ms: 259973
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523316
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
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523316
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T12:41:21Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be4665a5d7b7b0625bc76e505030dfeb36551b3b4b296aa21a978599d8b1ddb. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USNO16523316.
  date published: 2026-07-29T12:41:21Z
audio: E flat major, Op. 55, n? 1
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  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
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.254
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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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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B major, Op. 62 n? 1
type: MusicRecording
duration: PT7M8S
duration ms: 428466
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523317
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xb9ae328349511dc920371213a17b77232152daae4c9abcf912ee80bf96ecd043
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960101
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO16523317
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T11:46:30Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ae328349511dc920371213a17b77232152daae4c9abcf912ee80bf96ecd043. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/USNO16523317.
  date published: 2026-07-29T11:46:30Z
audio: B major, Op. 62 n? 1
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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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
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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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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E major, Op. 62, n? 2
type: MusicRecording
duration: PT5M34S
duration ms: 334533
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523318
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
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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
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b40eb040af84ab1c5c5c95877e66ddd4cedfc2f10dcd284b1b015f21c1ad936. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USNO16523318.
  date published: 2026-07-29T13:09:35Z
audio: E major, Op. 62, n? 2
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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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
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.265
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
    value: Major

E minor, Op. 72, n? 1
type: MusicRecording
duration: PT4M52S
duration ms: 292093
explicit: false
by artist: Frédéric Chopin
by artist: Ivan Moravec
in album: Chopin: Nocturnes - Complete
  type: MusicAlbum
  date published: 2005-11-01
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USNO16523319
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c0935f50c9533315b213f6f9d725c605d1afbc3d1c3dd9dedafc319fab991f. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USNO16523319.
  date published: 2026-07-07T13:52:39Z
audio: E minor, Op. 72, n? 1
  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: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Beethoven and Ravel: Piano Concertos - Franck: Symphonic Variations
type: MusicAlbum
date published: 2004-01-12

Ivan Moravec Plays Chopin, Vol. 1
type: MusicAlbum
date published: 2003-01-01
track: Berceuse in D-Flat Major, Op. 57, B. 154
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  duration: PT5M3S
  duration ms: 303800
  explicit: false
  by artist: Frédéric Chopin
  by artist: Ivan Moravec
  in album: Ivan Moravec Plays Chopin, Vol. 1
    type: MusicAlbum
    date published: 2003-01-01
  genre: classical
  genre: early-romantic-era
  genre: polish-classical
  isrc code: HKI192402628
  additional property: CopyrightID
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-31T16:33:26Z
  audio: Berceuse in D-Flat Major, Op. 57, B. 154
    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
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
      type: PropertyValue
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    additional property: Loudness (dB)
      type: PropertyValue
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    additional property: Key Name
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Beethoven: Sonatas Pathétique, Moonlight & Les adieux
type: MusicAlbum
date published: 2001-10-29
track: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
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  duration: PT6M40S
  duration ms: 400426
  explicit: false
  by artist: Ludwig van Beethoven
  by artist: Ivan Moravec
  in album: Beethoven: Sonatas Pathétique, Moonlight & Les adieux
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    date published: 2001-10-29
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: CZA160705282
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Live in Prague
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Wolfgang Amadeus Mozart Piano Concertos (no.24,25) Ivan Moravec, Piano [Classical Masterpieces]
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Wolfgang Amadeus Mozart Piano Concertos (no.20,23) Ivan Moravec, Piano [Classical Masterpieces]
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    date published: 2026-07-30T11:13:28Z
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  subject of: OpenTimestamps Proof of Existence
  audio: Piano Concerto No. 14 in E-Flat Major, K. 449: III. Allegro ma non troppo
track: Piano Concerto No. 23 in A Major, K. 488: I. Allegro
track: Piano Concerto No. 23 in A Major, K. 488: II. Adagio
track: Piano Concerto No. 23 in A Major, K. 488: III. Allegro assai
track: Piano Concerto No. 25 in C Major, K. 503: I. Allegro maestoso
track: Piano Concerto No. 25 in C Major, K. 503: II. Andante
track: Piano Concerto No. 25 in C Major, K. 503: III. Finale. Allegretto

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Piano Concerto No. 14 in E-Flat Major, K. 449: III. Allegro ma non troppo
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Piano Concerto No. 23 in A Major, K. 488: I. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T05:17:02Z
audio: Piano Concerto No. 23 in A Major, K. 488: I. Allegro
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Piano Concerto No. 23 in A Major, K. 488: II. Adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Piano Concerto No. 23 in A Major, K. 488: II. Adagio
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Piano Concerto No. 23 in A Major, K. 488: III. Allegro assai
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by artist: Czech Chamber Orchestra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T23:51:35Z
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Piano Concerto No. 25 in C Major, K. 503: I. Allegro maestoso
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T18:48:12Z
audio: Piano Concerto No. 25 in C Major, K. 503: I. Allegro maestoso
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Piano Concerto No. 25 in C Major, K. 503: II. Andante
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T13:04:34Z
audio: Piano Concerto No. 25 in C Major, K. 503: II. Andante
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Piano Concerto No. 25 in C Major, K. 503: III. Finale. Allegretto
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duration: PT8M8S
duration ms: 488200
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by artist: Wolfgang Amadeus Mozart
by artist: Czech Philharmonic
by artist: Josef Vlach
by artist: Ivan Moravec
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  date published: 1996-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T09:57:33Z
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Dvořák: Piano Concerto
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date published: 1996-01-01
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T17:29:52Z
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Brahms: Piano Concerto No. 2
type: MusicAlbum
date published: 1995-01-01

Chopin & Debussy: Piano Works
type: MusicAlbum
date published: 1993-01-01

Dvořák: Symphony No. 7 and Piano Concerto
type: MusicAlbum
date published: 1992-01-01

Brahms: Piano Concerto No. 1 and Intermezzo
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T15:42:38Z
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Beethoven: Symphony No. 5, Piano Concerto No. 3
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  by artist: Václav Neumann
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T23:30:38Z
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Piano Recital: Bach, Mozart, and Schumann
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date published: 1989-01-01
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-07T14:50:41Z
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  subject of: OpenTimestamps Proof of Existence
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track: Piano Sonata No.13 in B-Flat Major, K. 333: I. Allegro
track: Piano Sonata No.13 in B-Flat Major, K. 333: II. Andante cantabile
track: Piano Sonata No.13 in B-Flat Major, K. 333: III. Allegretto grazioso
track: Kinderszenen, Op. 15: No. 1 in G Major, Von fremden Ländern und Menschen
track: Kinderszenen, Op. 15: No. 2 in D Major, Kuriose Geschichte
track: Kinderszenen, Op. 15: No. 3 in B Minor, Hasche-Mann
track: Kinderszenen, Op. 15: No. 4 in D Major, Bittendes Kind
track: Kinderszenen, Op. 15: No. 5 in D Major, Glückes genug
track: Kinderszenen, Op. 15: No. 6 in A Major, Wichtige Begebenheit
track: Kinderszenen, Op. 15: No. 7 in F Major, Träumerei
track: Kinderszenen, Op. 15: No. 8 in F Major, Am Kamin
track: Kinderszenen, Op. 15: No. 9 in C Major, Ritter vom Steckenpferd
track: Kinderszenen, Op. 15: No. 10 in G-Sharp Minor, Fast zu ernst
track: Kinderszenen, Op. 15: No. 11 in E Minor, Fürchtenmachen
track: Kinderszenen, Op. 15: No. 12 in E Minor, Kind im Einschlummern
track: Kinderszenen, Op. 15: No. 13 in G Major, Der Dichter spricht

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Chromatic Fantasia and Fugue in D Minor, BWV 903: II. Fuga
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Piano Sonata No.13 in B-Flat Major, K. 333: I. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T17:48:40Z
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Piano Sonata No.13 in B-Flat Major, K. 333: II. Andante cantabile
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T17:48:40Z
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Piano Sonata No.13 in B-Flat Major, K. 333: III. Allegretto grazioso
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:53:07Z
audio: Piano Sonata No.13 in B-Flat Major, K. 333: III. Allegretto grazioso
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Kinderszenen, Op. 15: No. 1 in G Major, Von fremden Ländern und Menschen
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
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Kinderszenen, Op. 15: No. 2 in D Major, Kuriose Geschichte
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subject of: OpenTimestamps Proof of Existence
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Kinderszenen, Op. 15: No. 3 in B Minor, Hasche-Mann
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additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960163
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960163
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169003199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T23:20:38Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8616f2df1e7c722b716037daaed8332652a5315afb54085b0471567129dc8b42. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/CZA169003199.
  date published: 2026-07-29T23:20:38Z
audio: Kinderszenen, Op. 15: No. 3 in B Minor, Hasche-Mann
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 148.401
  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: 0.448
  additional property: Energy
    type: PropertyValue
    value: 0.137
  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.856
  additional property: Liveness
    type: PropertyValue
    value: 0.161
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.738
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.498
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen, Op. 15: No. 4 in D Major, Bittendes Kind
type: MusicRecording
duration: PT1M12S
duration ms: 72800
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Piano Recital: Bach, Mozart, and Schumann
  type: MusicAlbum
  date published: 1989-01-01
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169004199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T18:02:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5a27ec1d485f79b1365404ae6da69c000a4c10d6249a71594ab43b6c927dfb09
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169004199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a27ec1d485f79b1365404ae6da69c000a4c10d6249a71594ab43b6c927dfb09. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CZA169004199.
  date published: 2026-07-29T19:35:34Z
audio: Kinderszenen, Op. 15: No. 4 in D Major, Bittendes Kind
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.641
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.485
  additional property: Energy
    type: PropertyValue
    value: 0.003
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.913
  additional property: Liveness
    type: PropertyValue
    value: 0.098
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.609
  additional property: Loudness (dB)
    type: PropertyValue
    value: -36.165
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen, Op. 15: No. 5 in D Major, Glückes genug
type: MusicRecording
duration: PT1M33S
duration ms: 93560
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Piano Recital: Bach, Mozart, and Schumann
  type: MusicAlbum
  date published: 1989-01-01
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169005199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T21:19:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfa5ad77c681cc404bee1dc6de02d95323bc0f29b206bdc54b873e117cea48e45
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169005199
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5ad77c681cc404bee1dc6de02d95323bc0f29b206bdc54b873e117cea48e45. 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/CZA169005199.
  date published: 2026-07-08T03:20:19Z
audio: Kinderszenen, Op. 15: No. 5 in D Major, Glückes genug
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 170.122
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.18
  additional property: Energy
    type: PropertyValue
    value: 0.078
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.91
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.131
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.289
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen, Op. 15: No. 6 in A Major, Wichtige Begebenheit
type: MusicRecording
duration: PT0M55S
duration ms: 55440
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Piano Recital: Bach, Mozart, and Schumann
  type: MusicAlbum
  date published: 1989-01-01
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169006199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T21:13:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe863ab56f8a0cfe7b37eaab9ae498da7bc53fcab31aa58cb677daa166aba8cd5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169006199
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe863ab56f8a0cfe7b37eaab9ae498da7bc53fcab31aa58cb677daa166aba8cd5. 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/CZA169006199.
  date published: 2026-07-08T03:20:19Z
audio: Kinderszenen, Op. 15: No. 6 in A Major, Wichtige Begebenheit
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 130.592
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.549
  additional property: Energy
    type: PropertyValue
    value: 0.141
  additional property: Speechiness
    type: PropertyValue
    value: 0.057
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.946
  additional property: Liveness
    type: PropertyValue
    value: 0.105
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.442
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.234
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen, Op. 15: No. 7 in F Major, Träumerei
type: MusicRecording
duration: PT3M6S
duration ms: 186840
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Piano Recital: Bach, Mozart, and Schumann
  type: MusicAlbum
  date published: 1989-01-01
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169007199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-02T23:45:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5955d09f3478adf30e025068750be86a1b37303bf17625239f0b35247a6c69a2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169007199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5955d09f3478adf30e025068750be86a1b37303bf17625239f0b35247a6c69a2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CZA169007199.
  date published: 2026-06-13T12:47:07Z
audio: Kinderszenen, Op. 15: No. 7 in F Major, Träumerei
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 130.128
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.5
  additional property: Energy
    type: PropertyValue
    value: 0.012
  additional property: Speechiness
    type: PropertyValue
    value: 0.071
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.954
  additional property: Liveness
    type: PropertyValue
    value: 0.075
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.313
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.17
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen, Op. 15: No. 8 in F Major, Am Kamin
type: MusicRecording
duration: PT1M4S
duration ms: 64186
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Piano Recital: Bach, Mozart, and Schumann
  type: MusicAlbum
  date published: 1989-01-01
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169008199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8d2df345565cc640730cf5086036879a1044697766c6566bfeeaa82a5ba65421
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960163
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960163
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169008199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T23:20:38Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2df345565cc640730cf5086036879a1044697766c6566bfeeaa82a5ba65421. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/CZA169008199.
  date published: 2026-07-29T23:20:38Z
audio: Kinderszenen, Op. 15: No. 8 in F Major, Am Kamin
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.566
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.27
  additional property: Energy
    type: PropertyValue
    value: 0.078
  additional property: Speechiness
    type: PropertyValue
    value: 0.057
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.918
  additional property: Liveness
    type: PropertyValue
    value: 0.087
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.107
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.787
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen, Op. 15: No. 9 in C Major, Ritter vom Steckenpferd
type: MusicRecording
duration: PT0M51S
duration ms: 51973
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Piano Recital: Bach, Mozart, and Schumann
  type: MusicAlbum
  date published: 1989-01-01
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169009199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x907507244df12a7376af4dd6cac9b61c2359c34c73211522906fc29edb8a672e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960216
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960216
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169009199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T06:39:12Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907507244df12a7376af4dd6cac9b61c2359c34c73211522906fc29edb8a672e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CZA169009199.
  date published: 2026-07-30T06:39:12Z
audio: Kinderszenen, Op. 15: No. 9 in C Major, Ritter vom Steckenpferd
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.532
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.29
  additional property: Energy
    type: PropertyValue
    value: 0.18
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.85
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.117
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.099
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen, Op. 15: No. 10 in G-Sharp Minor, Fast zu ernst
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by artist: Ivan Moravec
in album: Piano Recital: Bach, Mozart, and Schumann
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genre: classical-piano
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T12:58:18Z
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Kinderszenen, Op. 15: No. 11 in E Minor, Fürchtenmachen
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by artist: Ivan Moravec
in album: Piano Recital: Bach, Mozart, and Schumann
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  date published: 1989-01-01
genre: classical
genre: classical-piano
genre: chamber-music
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:44:50Z
audio: Kinderszenen, Op. 15: No. 11 in E Minor, Fürchtenmachen
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Kinderszenen, Op. 15: No. 12 in E Minor, Kind im Einschlummern
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by artist: Ivan Moravec
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  date published: 1989-01-01
genre: classical
genre: classical-piano
genre: chamber-music
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
audio: Kinderszenen, Op. 15: No. 12 in E Minor, Kind im Einschlummern
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Kinderszenen, Op. 15: No. 13 in G Major, Der Dichter spricht
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by artist: Robert Schumann
by artist: Ivan Moravec
in album: Piano Recital: Bach, Mozart, and Schumann
  type: MusicAlbum
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genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169013199
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-07T18:39:05Z
audio: Kinderszenen, Op. 15: No. 13 in G Major, Der Dichter spricht
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Ivan Moravec Live: Smetana, Suk, Korte
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date published: 1986-01-01

Ivan Moravec Plays Chopin
type: MusicAlbum
date published: 1984-08-01
track: Waltz No.14 in E Minor, posth.
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T01:32:48Z
  audio: Waltz No.14 in E Minor, posth.
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Debussy: Images, L. 110 & L. 111 & Other Piano Works
type: MusicAlbum
date published: 1983-01-01

Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
type: MusicAlbum
date published: 1977
track: Piano Concerto
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  by artist: Robert Schumann
  by artist: Ivan Moravec
  by artist: Václav Neumann
  by artist: Czech Philharmonic
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  genre: classical
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  additional property: OTSVerificationAPI
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-02T03:55:08Z
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track: Piano Concerto
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7692554116b519c24dd8aea7a36ea9707dcd6d21f2ff9445ab46dfd692b40a6. 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/CZA167702325.
    date published: 2026-07-08T03:20:19Z
  audio: Piano Concerto
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 105.924
    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: 0.231
    additional property: Energy
      type: PropertyValue
      value: 0.021
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.987
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.818
    additional property: Liveness
      type: PropertyValue
      value: 0.072
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.079
    additional property: Loudness (dB)
      type: PropertyValue
      value: -31.779
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Piano Concerto
  type: MusicRecording
  duration: PT10M43S
  duration ms: 643066
  explicit: false
  by artist: Robert Schumann
  by artist: Ivan Moravec
  by artist: Václav Neumann
  by artist: Czech Philharmonic
  in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
    type: MusicAlbum
    date published: 1977
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: CZA167703325
  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Piano Concerto
track: Variations symphoniques
track: Kinderszenen

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-29T16:16:48+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x6d4d4cfcdb5a3cd44798f39357b771494f38add1417d143254ebe6502f98e719

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960138

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960138

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA167703325

OTSTimestamp
type: PropertyValue
value: 2026-07-29T19:35:34Z

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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4d4cfcdb5a3cd44798f39357b771494f38add1417d143254ebe6502f98e719. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CZA167703325.
date published: 2026-07-29T19:35:34Z

Piano Concerto
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 136.234
additional property: Musical Key
  type: PropertyValue
  value: 9
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.365
additional property: Energy
  type: PropertyValue
  value: 0.18
additional property: Speechiness
  type: PropertyValue
  value: 0.034
additional property: Acousticness
  type: PropertyValue
  value: 0.981
additional property: Instrumentalness
  type: PropertyValue
  value: 0.823
additional property: Liveness
  type: PropertyValue
  value: 0.067
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.164
additional property: Loudness (dB)
  type: PropertyValue
  value: -21.889
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Major

Variations symphoniques
type: MusicRecording
duration: PT17M5S
duration ms: 1025772
explicit: false
by artist: César Franck
by artist: Ivan Moravec
by artist: Václav Neumann
by artist: Czech Philharmonic
in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
  type: MusicAlbum
  date published: 1977
genre: chamber-music
isrc code: CZA167700326
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T19:41:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa2db3638cd38d844cce76d47be669b3648bbd12a5cffdecaa7ac5db1f20b20b2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960144
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960144
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA167700326
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T21:09:47Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2db3638cd38d844cce76d47be669b3648bbd12a5cffdecaa7ac5db1f20b20b2. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CZA167700326.
  date published: 2026-07-29T21:09:47Z
audio: Variations symphoniques
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 116.722
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.348
  additional property: Energy
    type: PropertyValue
    value: 0.136
  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
    value: 0.974
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.81
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.05
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.297
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen
type: MusicRecording
duration: PT1M37S
duration ms: 97906
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
  type: MusicAlbum
  date published: 1977
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169001199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-17T04:31:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x363c58709565910b6c52f20ff80d84d00a4ff24e37a7a022ef81e0f1ca9ff6d8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954130
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954130
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169001199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:07:14Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363c58709565910b6c52f20ff80d84d00a4ff24e37a7a022ef81e0f1ca9ff6d8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/CZA169001199.
  date published: 2026-06-17T19:07:14Z
audio: Kinderszenen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.617
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.422
  additional property: Energy
    type: PropertyValue
    value: 0.006
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.955
  additional property: Liveness
    type: PropertyValue
    value: 0.092
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.311
  additional property: Loudness (dB)
    type: PropertyValue
    value: -37.09
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen
type: MusicRecording
duration: PT1M16S
duration ms: 76800
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
  type: MusicAlbum
  date published: 1977
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169002199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T07:01:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3afbd1c8e0b8197c1bd111a4247e76188ab344ed78786911a71fb3575f1dc6d5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169002199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afbd1c8e0b8197c1bd111a4247e76188ab344ed78786911a71fb3575f1dc6d5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169002199.
  date published: 2026-07-07T18:39:05Z
audio: Kinderszenen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.522
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.463
  additional property: Energy
    type: PropertyValue
    value: 0.034
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.928
  additional property: Liveness
    type: PropertyValue
    value: 0.139
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.382
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.804
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen
type: MusicRecording
duration: PT0M33S
duration ms: 33880
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
  type: MusicAlbum
  date published: 1977
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169003199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8616f2df1e7c722b716037daaed8332652a5315afb54085b0471567129dc8b42
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960193
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960193
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169003199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T02:05:19Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8616f2df1e7c722b716037daaed8332652a5315afb54085b0471567129dc8b42. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/CZA169003199.
  date published: 2026-07-30T02:05:19Z
audio: Kinderszenen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 148.276
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.447
  additional property: Energy
    type: PropertyValue
    value: 0.137
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.856
  additional property: Liveness
    type: PropertyValue
    value: 0.161
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.736
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.498
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Kinderszenen
type: MusicRecording
duration: PT1M12S
duration ms: 72800
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
  type: MusicAlbum
  date published: 1977
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169004199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5a27ec1d485f79b1365404ae6da69c000a4c10d6249a71594ab43b6c927dfb09
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960198
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960198
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169004199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T02:21:55Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a27ec1d485f79b1365404ae6da69c000a4c10d6249a71594ab43b6c927dfb09. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/CZA169004199.
  date published: 2026-07-30T02:21:55Z
audio: Kinderszenen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.714
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.492
  additional property: Energy
    type: PropertyValue
    value: 0.003
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.913
  additional property: Liveness
    type: PropertyValue
    value: 0.098
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.61
  additional property: Loudness (dB)
    type: PropertyValue
    value: -36.165
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen
type: MusicRecording
duration: PT1M33S
duration ms: 93560
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
  type: MusicAlbum
  date published: 1977
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169005199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T21:19:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfa5ad77c681cc404bee1dc6de02d95323bc0f29b206bdc54b873e117cea48e45
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169005199
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5ad77c681cc404bee1dc6de02d95323bc0f29b206bdc54b873e117cea48e45. 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/CZA169005199.
  date published: 2026-07-08T03:20:19Z
audio: Kinderszenen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 170.008
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.181
  additional property: Energy
    type: PropertyValue
    value: 0.078
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.91
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.131
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.286
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen
type: MusicRecording
duration: PT0M55S
duration ms: 55440
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
  type: MusicAlbum
  date published: 1977
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169006199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T21:13:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe863ab56f8a0cfe7b37eaab9ae498da7bc53fcab31aa58cb677daa166aba8cd5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169006199
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe863ab56f8a0cfe7b37eaab9ae498da7bc53fcab31aa58cb677daa166aba8cd5. 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/CZA169006199.
  date published: 2026-07-08T03:20:19Z
audio: Kinderszenen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 130.592
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.549
  additional property: Energy
    type: PropertyValue
    value: 0.141
  additional property: Speechiness
    type: PropertyValue
    value: 0.057
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.946
  additional property: Liveness
    type: PropertyValue
    value: 0.105
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.442
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.234
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen
type: MusicRecording
duration: PT3M6S
duration ms: 186200
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
  type: MusicAlbum
  date published: 1977
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169007199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-01T15:36:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5955d09f3478adf30e025068750be86a1b37303bf17625239f0b35247a6c69a2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169007199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5955d09f3478adf30e025068750be86a1b37303bf17625239f0b35247a6c69a2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CZA169007199.
  date published: 2026-06-13T12:47:07Z
audio: Kinderszenen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 130.583
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.463
  additional property: Energy
    type: PropertyValue
    value: 0.007
  additional property: Speechiness
    type: PropertyValue
    value: 0.071
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.931
  additional property: Liveness
    type: PropertyValue
    value: 0.065
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.256
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.859
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen
type: MusicRecording
duration: PT1M4S
duration ms: 64185
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
  type: MusicAlbum
  date published: 1977
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169008199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T17:06:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8d2df345565cc640730cf5086036879a1044697766c6566bfeeaa82a5ba65421
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169008199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2df345565cc640730cf5086036879a1044697766c6566bfeeaa82a5ba65421. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CZA169008199.
  date published: 2026-07-29T19:35:34Z
audio: Kinderszenen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.055
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.343
  additional property: Energy
    type: PropertyValue
    value: 0.078
  additional property: Speechiness
    type: PropertyValue
    value: 0.062
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.918
  additional property: Liveness
    type: PropertyValue
    value: 0.087
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.113
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.787
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen
type: MusicRecording
duration: PT0M51S
duration ms: 51973
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
  type: MusicAlbum
  date published: 1977
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169009199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T16:38:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x907507244df12a7376af4dd6cac9b61c2359c34c73211522906fc29edb8a672e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169009199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907507244df12a7376af4dd6cac9b61c2359c34c73211522906fc29edb8a672e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CZA169009199.
  date published: 2026-07-29T19:35:34Z
audio: Kinderszenen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.532
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.293
  additional property: Energy
    type: PropertyValue
    value: 0.18
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.85
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.117
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.099
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen
type: MusicRecording
duration: PT1M56S
duration ms: 116306
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
  type: MusicAlbum
  date published: 1977
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169010199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T18:17:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x53545216ccebe10d67e2485cf0fc5d825379aa76c4f998bec23ba081956d8255
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169010199
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53545216ccebe10d67e2485cf0fc5d825379aa76c4f998bec23ba081956d8255. 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/CZA169010199.
  date published: 2026-07-08T03:20:19Z
audio: Kinderszenen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.928
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.357
  additional property: Energy
    type: PropertyValue
    value: 0.007
  additional property: Speechiness
    type: PropertyValue
    value: 0.057
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.937
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.21
  additional property: Loudness (dB)
    type: PropertyValue
    value: -34.464
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen
type: MusicRecording
duration: PT1M53S
duration ms: 113040
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
  type: MusicAlbum
  date published: 1977
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169011199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T01:19:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8d5a431ed05b0e5c0bdec778f58e0a7f3c6dadad74d1ed7126be809d99243927
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960185
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960185
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169011199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T01:32:48Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5a431ed05b0e5c0bdec778f58e0a7f3c6dadad74d1ed7126be809d99243927. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/CZA169011199.
  date published: 2026-07-30T01:32:48Z
audio: Kinderszenen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.542
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.348
  additional property: Energy
    type: PropertyValue
    value: 0.015
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.922
  additional property: Liveness
    type: PropertyValue
    value: 0.06
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.162
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.425
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kinderszenen
type: MusicRecording
duration: PT2M32S
duration ms: 152773
explicit: false
by artist: Robert Schumann
by artist: Ivan Moravec
in album: Schumann: Piano Concerto, Kinderszenen - Franck: Symphonic Variations
  type: MusicAlbum
  date published: 1977
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: CZA169012199
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x302fa76cbe17fbe7b8558a05926d3ab67f7e4274cb6b47dd70829bb243cf6d45
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960187
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960187
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169012199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T01:34:28Z
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  date published: 2026-07-30T01:34:28Z
audio: Kinderszenen
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Kinderszenen
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by artist: Ivan Moravec
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genre: classical-piano
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Kinderszenen
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Mozart: Piano Sonatas, K. 333, 457 & 570 - Fantasia in C Minor, K. 475
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Berceuse in D-Flat Major, Op. 57
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genre: early-romantic-era
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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