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subject of: OpenTimestamps Proof of Existence
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album: Mozart For Sleep
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album: Mozart For Relaxation
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-06-13T13:32:09Z
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-06-13T13:32:09Z
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  track: Sinfonia concertante in E-Flat Major, K. 297b: II. Adagio
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album: František Benda: Flute Concertos
album: Handel: Flute Sonatas
album: フルート作品集
album: Antonín & Pavel Vranický: Sextets for Flute, Oboe and String Quartet
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album: Dvořák: String Quartet No. 2, Bagatelles, Largo
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album: Rejcha: Tre quartetti, Op. 98
album: Vivaldi: Wind And Brass Concertos
album: Vivaldi: Flute Concertos (Famous)
album: French Flute Works (Fauré, Ibert, Bozza, Debussy, Roussel, Milhaud, Honegger, Messiaen, Dutilleux)
album: Flétnový Koktejl
album: The Romantic Mozart - A Celebration Of Mozart's Most Romantic Music
album: Válek: Symphony No. 8 "Hic sunt homines" and No. 9 "Rinascimente"
album: Vivaldi: The Four Seasons/Wind Concertos
album: The Essential Capella Istropolitana
album: 50 Best Smooth Classics
album: Relaxing Mozart
album: Great Baroque Masterpieces
album: Listen, Learn And Grow, Vol. 2: Lullabies
album: Chill With Mozart
album: Mozart for Meditation
album: 魅力的なフルートの音楽
album: My First Mozart Album
album: Mozart: Romantic Mozart (The)
album: Check The Czechs! Beatles (Zahraniční Songy V Domácích Verzích)
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album: The Ultimate Lullaby Collection
album: Bach: Brandenburg Concertos, 4 Suites
album: Vivaldi (The Best Of)
album: Classical Flute
album: Classical Duets
album: Adagio - The Ultimate Collection
album: Stamitz Karel, Stamitz Anton: Concertos

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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
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Mozart For Study
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František Benda: Flute Concertos
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Handel: Flute Sonatas
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フルート作品集
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  subject of: OpenTimestamps Proof of Existence
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Poulenc, Hindemith, Prokofiev, Martinů: Flute Sonatas
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track: Trumpet Concerto In B Flat Minor (Arr. J. Thilde): I. Allegro
track: Bassoon Concerto In E Minor, RV 484: I. Allegro Poco
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Flute Concerto In D Major, Op. 10, No. 3, RV 428, "Il Gardellino": I. Allegro
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Trumpet Concerto In B Flat Minor (Arr. J. Thilde): I. Allegro
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Bassoon Concerto In E Minor, RV 484: I. Allegro Poco
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Bassoon Concerto In E Minor, RV 484: III. Allegro
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subject of: OpenTimestamps Proof of Existence
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Flute Concerto In G Minor, Op. 10, No. 2, RV 439, "La Notte": I. Largo-presto-largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: Flute Concerto In G Minor, Op. 10, No. 2, RV 439, "La Notte": I. Largo-presto-largo
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Flute Concerto In G Minor, Op. 10, No. 2, RV 439, "La Notte": II. Presto
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  date published: 2026-07-02T03:30:09Z
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Flute Concerto In G Minor, Op. 10, No. 2, RV 439, "La Notte": III. Largo-il Sonno-allegro
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  date published: 2026-06-13T12:47:07Z
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Vivaldi: Flute Concertos (Famous)
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French Flute Works (Fauré, Ibert, Bozza, Debussy, Roussel, Milhaud, Honegger, Messiaen, Dutilleux)
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Flétnový Koktejl
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The Romantic Mozart - A Celebration Of Mozart's Most Romantic Music
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Válek: Symphony No. 8 "Hic sunt homines" and No. 9 "Rinascimente"
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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 0xb3307f3136dc7bcc08e34c4852ac05eb982e2a87f45656d2cb3c941c696051c7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199329501.
    date published: 2026-06-13T13:32:09Z
  audio: The 4 Seasons: Violin Concerto In E Major, Op. 8, No. 1, RV 269, "La Primavera" (Spring): I. Allegro
    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
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.494
    additional property: Energy
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      value: 0.13
    additional property: Speechiness
      type: PropertyValue
      value: 0.046
    additional property: Acousticness
      type: PropertyValue
      value: 0.915
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.899
    additional property: Liveness
      type: PropertyValue
      value: 0.129
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.329
    additional property: Loudness (dB)
      type: PropertyValue
      value: -19.796
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: The 4 Seasons: Violin Concerto In E Major, Op. 8, No. 1, RV 269, "La Primavera" (Spring): III. Danza Pastorale: Allegro
  type: MusicRecording
  duration: PT4M22S
  duration ms: 262000
  explicit: false
  by artist: Antonio Vivaldi
  by artist: Capella Istropolitana
  by artist: Takako Nishizaki
  in album: Vivaldi: The Four Seasons/Wind Concertos
    type: MusicAlbum
    date published: 1995-03-15
  isrc code: HKI199329503
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-22T04:19:34+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x4eed4e6e0e34d5d4e07b427ef5eebe85e4744efcbd191b76ea308ae29d833257
  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/HKI199329503
  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 0x4eed4e6e0e34d5d4e07b427ef5eebe85e4744efcbd191b76ea308ae29d833257. 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/HKI199329503.
    date published: 2026-07-02T03:55:08Z
  audio: The 4 Seasons: Violin Concerto In E Major, Op. 8, No. 1, RV 269, "La Primavera" (Spring): III. Danza Pastorale: Allegro
    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
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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)
      type: PropertyValue
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    additional property: Key Name
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    additional property: Mode Name
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track: The 4 Seasons: Violin Concerto In G Minor, Op. 8, No. 2, RV 315, "L'estate" (Summer): I. Allegro Non Molto
  type: MusicRecording
  duration: PT5M24S
  duration ms: 324000
  explicit: false
  by artist: Antonio Vivaldi
  by artist: Capella Istropolitana
  by artist: Takako Nishizaki
  in album: Vivaldi: The Four Seasons/Wind Concertos
    type: MusicAlbum
    date published: 1995-03-15
  isrc code: HKI199329504
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-20T08:14:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x6c821ba758f242e60e48e99d45be5a1883d7dacfd10fd027ca82053a8e2444af
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956302
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: The 4 Seasons: Violin Concerto In G Minor, Op. 8, No. 2, RV 315, "L'estate" (Summer): I. Allegro Non Molto
track: The 4 Seasons: Violin Concerto In G Minor, Op. 8, No. 2, RV 315, "L'estate" (Summer): III. Presto
track: The 4 Seasons: Violin Concerto In F Major, Op. 8, No. 3, RV 293, "L'autunno" (Autumn): I. Allegro
track: The 4 Seasons: Violin Concerto In F Major, Op. 8, No. 3, RV 293, "L'autunno" (Autumn): III. Allegro
track: The 4 Seasons: Violin Concerto In F Minor, Op. 8, No. 4, RV 297, "L'inverno" (Winter): I. Allegro Non Molto
track: The 4 Seasons: Violin Concerto In F Minor, Op. 8, No. 4, RV 297, "L'inverno" (Winter): III. Allegro
track: Oboe Concerto In C Major, RV 450: I. Allegro Molto
track: Oboe Concerto In C Major, RV 450: II. Larghetto

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956302

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199329504

OTSTimestamp
type: PropertyValue
value: 2026-07-02T03:30:09Z

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 0x6c821ba758f242e60e48e99d45be5a1883d7dacfd10fd027ca82053a8e2444af. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199329504.
date published: 2026-07-02T03:30:09Z

The 4 Seasons: Violin Concerto In G Minor, Op. 8, No. 2, RV 315, "L'estate" (Summer): I. Allegro Non Molto
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 135.434
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
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additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.326
additional property: Energy
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  value: 0.157
additional property: Speechiness
  type: PropertyValue
  value: 0.048
additional property: Acousticness
  type: PropertyValue
  value: 0.827
additional property: Instrumentalness
  type: PropertyValue
  value: 0.248
additional property: Liveness
  type: PropertyValue
  value: 0.084
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.1
additional property: Loudness (dB)
  type: PropertyValue
  value: -22.998
additional property: Key Name
  type: PropertyValue
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additional property: Mode Name
  type: PropertyValue
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The 4 Seasons: Violin Concerto In G Minor, Op. 8, No. 2, RV 315, "L'estate" (Summer): III. Presto
type: MusicRecording
duration: PT3M7S
duration ms: 187866
explicit: false
by artist: Antonio Vivaldi
by artist: Capella Istropolitana
by artist: Takako Nishizaki
in album: Vivaldi: The Four Seasons/Wind Concertos
  type: MusicAlbum
  date published: 1995-03-15
isrc code: HKI199329506
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T05:04:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6be357354c393325e1c62917d38f08c62f42641b8db09446c4e36723ee91bb91
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199329506
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x6be357354c393325e1c62917d38f08c62f42641b8db09446c4e36723ee91bb91. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199329506.
  date published: 2026-06-13T13:32:09Z
audio: The 4 Seasons: Violin Concerto In G Minor, Op. 8, No. 2, RV 315, "L'estate" (Summer): III. Presto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 140.56
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.361
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.947
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.86
  additional property: Liveness
    type: PropertyValue
    value: 0.13
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.76
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.81
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

The 4 Seasons: Violin Concerto In F Major, Op. 8, No. 3, RV 293, "L'autunno" (Autumn): I. Allegro
type: MusicRecording
duration: PT4M48S
duration ms: 288000
explicit: false
by artist: Antonio Vivaldi
by artist: Capella Istropolitana
by artist: Takako Nishizaki
in album: Vivaldi: The Four Seasons/Wind Concertos
  type: MusicAlbum
  date published: 1995-03-15
isrc code: HKI199329507
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T04:09:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x148b46f215d64d68c2183c89b809061146dca78b76ae57560e16d1a315495c6f
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/HKI199329507
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 0x148b46f215d64d68c2183c89b809061146dca78b76ae57560e16d1a315495c6f. 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/HKI199329507.
  date published: 2026-07-02T03:55:08Z
audio: The 4 Seasons: Violin Concerto In F Major, Op. 8, No. 3, RV 293, "L'autunno" (Autumn): I. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 127.106
  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: 0.467
  additional property: Energy
    type: PropertyValue
    value: 0.108
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.97
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.614
  additional property: Liveness
    type: PropertyValue
    value: 0.096
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.24
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.686
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

The 4 Seasons: Violin Concerto In F Major, Op. 8, No. 3, RV 293, "L'autunno" (Autumn): III. Allegro
type: MusicRecording
duration: PT3M20S
duration ms: 200866
explicit: false
by artist: Antonio Vivaldi
by artist: Capella Istropolitana
by artist: Takako Nishizaki
in album: Vivaldi: The Four Seasons/Wind Concertos
  type: MusicAlbum
  date published: 1995-03-15
isrc code: HKI199329509
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T20:12:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2bac3d746e158254dbabe33773425bb545c8b9827b8f196043104ede81515578
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/HKI199329509
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 0x2bac3d746e158254dbabe33773425bb545c8b9827b8f196043104ede81515578. 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/HKI199329509.
  date published: 2026-07-02T03:55:08Z
audio: The 4 Seasons: Violin Concerto In F Major, Op. 8, No. 3, RV 293, "L'autunno" (Autumn): III. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 154.533
  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
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.96
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.906
  additional property: Liveness
    type: PropertyValue
    value: 0.052
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.404
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.408
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
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The 4 Seasons: Violin Concerto In F Minor, Op. 8, No. 4, RV 297, "L'inverno" (Winter): I. Allegro Non Molto
type: MusicRecording
duration: PT3M30S
duration ms: 210000
explicit: false
by artist: Antonio Vivaldi
by artist: Capella Istropolitana
by artist: Takako Nishizaki
in album: Vivaldi: The Four Seasons/Wind Concertos
  type: MusicAlbum
  date published: 1995-03-15
isrc code: HKI199329510
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T11:47:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdcb796cac614fd5ee227020f742a8c69648eba965fac4e588533d26d4d1a9663
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199329510
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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: 2026-07-02T03:30:09Z
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The 4 Seasons: Violin Concerto In F Minor, Op. 8, No. 4, RV 297, "L'inverno" (Winter): III. Allegro
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  date published: 2026-07-02T03:55:08Z
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Oboe Concerto In C Major, RV 450: I. Allegro Molto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T11:35:32Z
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Oboe Concerto In C Major, RV 450: II. Larghetto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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The Essential Capella Istropolitana
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track: Sonata (Sinfonia) a 5 in G Minor, Op. 2, No. 6: IV. Allegro
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    date published: 2026-07-02T03:55:08Z
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50 Best Smooth Classics
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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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Relaxing Mozart
type: MusicAlbum
date published: 2021-09-24

Great Baroque Masterpieces
type: MusicAlbum
date published: 2012-04-24

Listen, Learn And Grow, Vol. 2: Lullabies
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date published: 2000-09-03

Chill With Mozart
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date published: 2021-07-02

Mozart for Meditation
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date published: 2005-05-01

魅力的なフルートの音楽
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date published: 2019-06-26

My First Mozart Album
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date published: 2011-11-01

Mozart: Romantic Mozart (The)
type: MusicAlbum
date published: 1996-06-20

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date published: 2005-01-01

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type: MusicAlbum
date published: 1993-01-01

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type: MusicAlbum
date published: 1997-06-23

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type: MusicAlbum
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type: MusicAlbum
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type: MusicAlbum
date published: 1992-01-01