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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 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. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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album: The Romantic Mozart - A Celebration Of Mozart's Most Romantic Music
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  date published: 1996-06-20
  track: Piano Concerto No. 21 In C Major, K. 467, "Elvira Madigan": II. Andante
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    by artist: Jenő Jandó
    by artist: Wolfgang Amadeus Mozart
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      date published: 1996-06-20
    genre: hungarian-classical-performance
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:53:27Z
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  track: Adagio In E Major, K. 261
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:53:27Z
    audio: Adagio In E Major, K. 261
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  track: Serenade No. 13 In G Major, K. 525, "Eine Kleine Nachtmusik": II. Romance
  track: 12 German Dances, K. 586: No. 7 In G Major
  track: Piano Concerto No. 27 In B Flat Major, Op. 17, K. 595: II. Larghetto
  track: Serenade No. 10 In B Flat Major, K. 361, "Gran Partita": III. Adagio
  track: Piano Concerto No. 20 In D Minor, K. 466: II. Romance
album: Mozart: Romantic Mozart (The)
album: Mozart: Horn Concertos Nos. 1-4 / Rondo in E-Flat Major
album: Mozart: Horn Concertos Nos. 1-4 / Rondo In E Flat Major
album: Mozart (The Best Of)
album: 50 of the Best: Mozart
album: The Greatest Classical Orchestra Music
album: Night Music, Vol. 5
album: Classical Romance, Vol. 4
album: Cinema Classics, Vol. 11
album: Mozart: 30 of the Best
album: Epic Orchestra Music
album: Live Classical Orchestra Music
album: Cantabile - Classical Favourites for Relaxing and Dreaming
album: Become an Instant Expert: Mozart
album: Classical Concert Music Playlist
album: Best of Classical Concert Music
album: Concert and Orchestra Music Playlist
album: Classical Bliss
album: Ses plus grandes œuvres: Mozart

Horn Concerto No. 2 In E Flat Major, K. 417: III. Rondo: Allegro
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duration: PT3M41S
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by artist: Milos Stevove
by artist: Capella Istropolitana
by artist: Wolfgang Amadeus Mozart
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  date published: 1989-06-15
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:16:32Z
audio: Horn Concerto No. 2 In E Flat Major, K. 417: III. Rondo: Allegro
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Horn Concerto No. 3 In E Flat Major, K. 447: III. Allegro
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duration: PT3M37S
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by artist: Milos Stevove
by artist: Capella Istropolitana
by artist: Wolfgang Amadeus Mozart
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additional property: OTSVerifyInstructions
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  date published: 2026-06-13T12:53:06Z
audio: Horn Concerto No. 3 In E Flat Major, K. 447: III. Allegro
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Horn Concerto No. 4 In E Flat Major, K. 495: II. Romance: Andante Cantabile
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duration: PT4M21S
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by artist: Milos Stevove
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by artist: Wolfgang Amadeus Mozart
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additional property: OTSVerifyInstructions
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  date published: 2026-06-13T12:53:06Z
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Serenade No. 13 In G Major, K. 525, "Eine Kleine Nachtmusik": II. Romance
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subject of: OpenTimestamps Proof of Existence
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audio: Serenade No. 13 In G Major, K. 525, "Eine Kleine Nachtmusik": II. Romance
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12 German Dances, K. 586: No. 7 In G Major
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Piano Concerto No. 27 In B Flat Major, Op. 17, K. 595: II. Larghetto
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
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Serenade No. 10 In B Flat Major, K. 361, "Gran Partita": III. Adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Serenade No. 10 In B Flat Major, K. 361, "Gran Partita": III. Adagio
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Piano Concerto No. 20 In D Minor, K. 466: II. Romance
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  date published: 2026-07-08T08:56:20Z
audio: Piano Concerto No. 20 In D Minor, K. 466: II. Romance
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Mozart: Romantic Mozart (The)
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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track: Adagio in E Major, K. 261
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track: Piano Concerto No. 27 in B-Flat Major, K. 595: Piano Concerto No. 27 in B-Flat Major, Op. 17, K. 595: II. Larghetto
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T08:56:20Z

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    date published: 2026-07-08T03:22:41Z
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T08:56:20Z

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    date published: 2026-07-08T03:22:41Z
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track: String Quartet No. 17 in B-Flat Major, K. 458, "Hunt": Minuetto
track: Horn Concerto No. 3 in E-Flat Major, K. 447: III. Allegro
track: Klarinettenkonzert A-Dur, K. 622: 2. Adagio (Jenseits von Afrika): Clarinet Concerto in A Major, K. 622: II. Adagio
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5d516167cd439b5a5d7c40a7eb2fdd00a7f2d6a485a12d274c6df1812eba3b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199280508.
date published: 2026-07-08T03:53:27Z

Symphony No. 25 in G Minor, K. 183: I. Allegro con brio
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 103.921
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: 0.417
additional property: Energy
  type: PropertyValue
  value: 0.091
additional property: Speechiness
  type: PropertyValue
  value: 0.038
additional property: Acousticness
  type: PropertyValue
  value: 0.959
additional property: Instrumentalness
  type: PropertyValue
  value: 0.783
additional property: Liveness
  type: PropertyValue
  value: 0.188
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.264
additional property: Loudness (dB)
  type: PropertyValue
  value: -23.479
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Minor

String Quartet No. 17 in B-Flat Major, K. 458, "Hunt": Minuetto
type: MusicRecording
duration: PT4M17S
duration ms: 257240
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Eder Quartet
in album: Mozart (The Best Of)
  type: MusicAlbum
  date published: 1997-06-27
genre: classical
genre: classical-era
isrc code: HKI199278502
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T07:23:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x15cdc6c68b39ea172daedf134e3a4ab6f67212e029298fe8050dcde2069cb57b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278502
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cdc6c68b39ea172daedf134e3a4ab6f67212e029298fe8050dcde2069cb57b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278502.
  date published: 2026-07-08T03:53:27Z
audio: String Quartet No. 17 in B-Flat Major, K. 458, "Hunt": Minuetto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.266
  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: 0.292
  additional property: Energy
    type: PropertyValue
    value: 0.041
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.945
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.819
  additional property: Liveness
    type: PropertyValue
    value: 0.249
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.312
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.431
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Horn Concerto No. 3 in E-Flat Major, K. 447: III. Allegro
type: MusicRecording
duration: PT3M37S
duration ms: 217733
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Milos Stevove
by artist: Capella Istropolitana
by artist: Jozef Kopelman
in album: Mozart (The Best Of)
  type: MusicAlbum
  date published: 1997-06-27
genre: classical
genre: classical-era
isrc code: HKI199275306
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T04:07:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x336e9b5d6cdd7a9eb68f1001119f95f0b46458217a05e8f9c8994924a6f91ec1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199275306
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336e9b5d6cdd7a9eb68f1001119f95f0b46458217a05e8f9c8994924a6f91ec1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199275306.
  date published: 2026-07-08T08:56:20Z
audio: Horn Concerto No. 3 in E-Flat Major, K. 447: III. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 173.806
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.421
  additional property: Energy
    type: PropertyValue
    value: 0.253
  additional property: Speechiness
    type: PropertyValue
    value: 0.063
  additional property: Acousticness
    type: PropertyValue
    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.879
  additional property: Liveness
    type: PropertyValue
    value: 0.111
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.563
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.308
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Klarinettenkonzert A-Dur, K. 622: 2. Adagio (Jenseits von Afrika): Clarinet Concerto in A Major, K. 622: II. Adagio
type: MusicRecording
duration: PT7M21S
duration ms: 441600
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Ernst Ottensamer
by artist: Vienna Mozart Academy
by artist: Johannes Wildner
in album: Mozart (The Best Of)
  type: MusicAlbum
  date published: 1997-06-27
genre: classical
genre: classical-era
isrc code: HKI199273708
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-01-28T21:41:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xefd82c111e5540383f6662d81160367bd6f8fe599fc502363736c9990855d68a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956351
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956351
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199273708
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:38:34Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd82c111e5540383f6662d81160367bd6f8fe599fc502363736c9990855d68a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKI199273708.
  date published: 2026-07-02T11:38:34Z
audio: Klarinettenkonzert A-Dur, K. 622: 2. Adagio (Jenseits von Afrika): Clarinet Concerto in A Major, K. 622: II. Adagio
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.04
  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: 0.071
  additional property: Energy
    type: PropertyValue
    value: 0.007
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.042
  additional property: Liveness
    type: PropertyValue
    value: 0.089
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.07
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.22
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Divertimento in D Major, K. 136, "Salzburg Symphony No. 1": I. Allegro
type: MusicRecording
duration: PT4M5S
duration ms: 245040
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Capella Istropolitana
by artist: Richard Edlinger
in album: Mozart (The Best Of)
  type: MusicAlbum
  date published: 1997-06-27
genre: classical
genre: classical-era
isrc code: HKI199273601
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-01-29T10:27:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0cda09e6c462b85996d3d02c43875072c18941b880f78d05d0e13427b15a1c89
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199273601
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cda09e6c462b85996d3d02c43875072c18941b880f78d05d0e13427b15a1c89. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199273601.
  date published: 2026-07-08T03:53:27Z
audio: Divertimento in D Major, K. 136, "Salzburg Symphony No. 1": I. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 144.942
  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: 0.411
  additional property: Energy
    type: PropertyValue
    value: 0.161
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.915
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.863
  additional property: Liveness
    type: PropertyValue
    value: 0.248
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.509
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.481
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Flute Concerto No. 1 in G Major, K. 313: III. Rondo: Tempo di menuetto
type: MusicRecording
duration: PT7M37S
duration ms: 457066
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Herbert Weissberg
by artist: Capella Istropolitana
by artist: Martin Sieghart
in album: Mozart (The Best Of)
  type: MusicAlbum
  date published: 1997-06-27
genre: classical
genre: classical-era
isrc code: HKI199274803
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T20:59:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa1cb1fd1575f7638429a66833b2da31a9a8ed21d791dac89505a66cdc68878fa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957122
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957122
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199274803
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:39:04Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cb1fd1575f7638429a66833b2da31a9a8ed21d791dac89505a66cdc68878fa. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199274803.
  date published: 2026-07-08T03:39:04Z
audio: Flute Concerto No. 1 in G Major, K. 313: III. Rondo: Tempo di menuetto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.012
  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: 0.457
  additional property: Energy
    type: PropertyValue
    value: 0.071
  additional property: Speechiness
    type: PropertyValue
    value: 0.055
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.861
  additional property: Liveness
    type: PropertyValue
    value: 0.09
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.473
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.426
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

50 of the Best: Mozart
type: MusicAlbum
date published: 2011-11-15
track: Serenade No. 13 in G Major, K. 525, "Eine kleine Nachtmusik": I. Allegro
  type: MusicRecording
  duration: PT5M45S
  duration ms: 345093
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Onix Chamber Orchestra
  in album: 50 of the Best: Mozart
    type: MusicAlbum
    date published: 2011-11-15
  popularity: 3
  genre: classical
  genre: classical-era
  isrc code: HKI190563101
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T06:33:20+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xde6fc7a59a7617f60065fdc939784ea2adf5ffcc36be567cd2ec4ce0ac29f8c2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190563101
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6fc7a59a7617f60065fdc939784ea2adf5ffcc36be567cd2ec4ce0ac29f8c2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190563101.
    date published: 2026-07-08T08:56:20Z
  audio: Serenade No. 13 in G Major, K. 525, "Eine kleine Nachtmusik": I. Allegro
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 144.895
    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: 0.514
    additional property: Energy
      type: PropertyValue
      value: 0.126
    additional property: Speechiness
      type: PropertyValue
      value: 0.053
    additional property: Acousticness
      type: PropertyValue
      value: 0.9
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.855
    additional property: Liveness
      type: PropertyValue
      value: 0.071
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.355
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.413
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Symphony No. 40 in G Minor, K. 550: I. Molto allegro
  type: MusicRecording
  duration: PT8M13S
  duration ms: 493000
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Philharmonia Cassovia
  by artist: Johannes Wildner
  in album: 50 of the Best: Mozart
    type: MusicAlbum
    date published: 2011-11-15
  popularity: 3
  genre: classical
  genre: classical-era
  isrc code: HKI199597004
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T08:36:11+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x1bfb8eaaa341ecb54aea57990fd042e090b48d12972255af27bcdecd526806ff
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Piano Concerto No. 23 in A Major, K. 488: II. Adagio
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Symphony No. 38 in D Major, K. 504, "Prague": III. Finale: Presto
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The Greatest Classical Orchestra Music
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Night Music, Vol. 5
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Classical Romance, Vol. 4
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Cinema Classics, Vol. 11
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date published: 1998-11-04

Mozart: 30 of the Best
type: MusicAlbum
date published: 2020-04-24

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type: MusicAlbum
date published: 2020-01-27

Live Classical Orchestra Music
type: MusicAlbum
date published: 2020-01-26

Cantabile - Classical Favourites for Relaxing and Dreaming
type: MusicAlbum
date published: 1998-08-01

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type: MusicAlbum
date published: 2013-07-23

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type: MusicAlbum
date published: 2020-01-23

Best of Classical Concert Music
type: MusicAlbum
date published: 2020-01-25

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type: MusicAlbum
date published: 2020-01-24

Classical Bliss
type: MusicAlbum
date published: 2009-01-01

Ses plus grandes œuvres: Mozart
type: MusicAlbum
date published: 2005-10-01