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subject of: OpenTimestamps Proof of Existence
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album: Mozart For Inspiration
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  date published: 2021-12-31
album: 101 Classics - The Best Loved Classical Melodies
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  track: An der schonen, blauen Donau (The Beautiful Blue Danube), Op. 314
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:20:19Z
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  track: Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso (Opening)
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-07T16:07:00Z
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  track: Emperor Waltz, Op. 437: Kaiser Walzer (Emperor Waltz), Op. 437
  track: The Danube Waves: Valurile Dunarii (The Danube Waves)
  track: Serenade for Strings in C Major, Op. 48: II. Walzer
  track: Les Patineurs, Op. 183, "The Skater's Waltz"
  track: Sobre las olas (Over the Waves)
  track: The Nutcracker Suite, Op. 71a: VIII. Waltz of the Flowers
album: Classical Music for Kids: Bach
album: Ave Maria: Sacred Arias & Choruses
album: Discover Music of the Baroque Era
album: 50 of the Best: Mozart
album: Adagio 2
album: A Guided Tour of the Baroque Era, Vol. 5
album: Skona Grona Dagar (Beautiful Green Days)
album: Albinoni / Mozart / Bach: Famous Adagios
album: A Guided Tour of the Classical Era, Vol. 2
album: Mozart: 30 of the Best
album: Szabo: Chamber Music and Choral Works
track: Herz und Mund und Tat und Leben, BWV 147: Chorale. Jesus bleibet meine Freude

Piano Concerto No. 23 in A Major, K. 488: II. Adagio
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popularity: 3
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  date published: 2026-07-08T03:22:41Z
audio: Piano Concerto No. 23 in A Major, K. 488: II. Adagio
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Herz und Mund und Tat und Leben, BWV 147: Chorale. Jesus bleibet meine Freude
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by artist: Hungarian Radio Chorus
by artist: Budapest Failoni Chamber Orchestra
by artist: Matyas Antal
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popularity: 3
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T03:20:19Z
audio: Herz und Mund und Tat und Leben, BWV 147: Chorale. Jesus bleibet meine Freude
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Emperor Waltz, Op. 437: Kaiser Walzer (Emperor Waltz), Op. 437
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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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The Danube Waves: Valurile Dunarii (The Danube Waves)
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by artist: Istvan Bogar
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subject of: OpenTimestamps Proof of Existence
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audio: The Danube Waves: Valurile Dunarii (The Danube Waves)
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Serenade for Strings in C Major, Op. 48: II. Walzer
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by artist: Vienna Chamber Orchestra
by artist: Philippe Entremont
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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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Les Patineurs, Op. 183, "The Skater's Waltz"
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Les Patineurs, Op. 183, "The Skater's Waltz"
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Sobre las olas (Over the Waves)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Sobre las olas (Over the Waves)
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The Nutcracker Suite, Op. 71a: VIII. Waltz of the Flowers
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: The Nutcracker Suite, Op. 71a: VIII. Waltz of the Flowers
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Classical Music for Kids: Bach
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date published: 2016-11-18

Ave Maria: Sacred Arias & Choruses
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  subject of: OpenTimestamps Proof of Existence
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Discover Music of the Baroque Era
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    value: https://explorer.copyrightchains.com/tx/0xbdc327aaeaeeb37820e2c95309d864ae8259fb22d747783537343f8eca31e0c5
  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/HKI199908401
  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 0xbdc327aaeaeeb37820e2c95309d864ae8259fb22d747783537343f8eca31e0c5. 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/HKI199908401.
    date published: 2026-07-08T03:53:27Z
  audio: Sonata in D Major a 8 viole con una tromba: I. Allegro
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 108.168
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.435
    additional property: Energy
      type: PropertyValue
      value: 0.115
    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
      value: 0.894
    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
      value: 0.064
    additional property: Valence (Positivity)
      type: PropertyValue
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -19.287
    additional property: Key Name
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      value: D
    additional property: Mode Name
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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
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957043
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957043
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199597004
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-07T13:52:39Z
  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 0x1bfb8eaaa341ecb54aea57990fd042e090b48d12972255af27bcdecd526806ff. 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/HKI199597004.
    date published: 2026-07-07T13:52:39Z
  audio: Symphony No. 40 in G Minor, K. 550: I. Molto allegro
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
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    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: 0.337
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.981
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.893
    additional property: Liveness
      type: PropertyValue
      value: 0.169
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.196
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.795
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Symphony No. 25 in G Minor, K. 183: I. Allegro con brio
  type: MusicRecording
  duration: PT7M42S
  duration ms: 462080
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Capella Istropolitana
  by artist: Barry Wordsworth
  in album: 50 of the Best: Mozart
    type: MusicAlbum
    date published: 2011-11-15
  popularity: 2
  genre: classical
  genre: classical-era
  isrc code: HKI199280505
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-06T18:07:30+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: Symphony No. 25 in G Minor, K. 183: I. Allegro con brio
track: Ave verum corpus, K. 618
track: Piano Concerto No. 23 in A Major, K. 488: II. Adagio
track: Fantasia in D Minor, K. 397
track: Symphony No. 38 in D Major, K. 504, "Prague": III. Finale: Presto

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xc356c08013434460981d0bce5edf328a492a724d7ad735ea7e8dd47e37d727c3

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957124

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957124

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199280505

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:53:27Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc356c08013434460981d0bce5edf328a492a724d7ad735ea7e8dd47e37d727c3. 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/HKI199280505.
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: 104.269
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: 0.414
additional property: Energy
  type: PropertyValue
  value: 0.091
additional property: Speechiness
  type: PropertyValue
  value: 0.038
additional property: Acousticness
  type: PropertyValue
  value: 0.96
additional property: Instrumentalness
  type: PropertyValue
  value: 0.775
additional property: Liveness
  type: PropertyValue
  value: 0.201
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.253
additional property: Loudness (dB)
  type: PropertyValue
  value: -23.466
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Minor

Ave verum corpus, K. 618
type: MusicRecording
duration: PT2M47S
duration ms: 167266
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: St. Clement Concert Choir
by artist: St. Clement Concert Orchestra
by artist: Randall Swanson
in album: 50 of the Best: Mozart
  type: MusicAlbum
  date published: 2011-11-15
popularity: 2
genre: classical
genre: classical-era
isrc code: HKI199793613
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:41:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd7338f8cb455a89f0df1e6867d5aeec5d459b1ec5a588ee5320eaf496087135a
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/HKI199793613
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7338f8cb455a89f0df1e6867d5aeec5d459b1ec5a588ee5320eaf496087135a. 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/HKI199793613.
  date published: 2026-07-08T03:22:41Z
audio: Ave verum corpus, K. 618
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.526
  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: 0.086
  additional property: Energy
    type: PropertyValue
    value: 0.036
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.144
  additional property: Liveness
    type: PropertyValue
    value: 0.081
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.036
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.783
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Fantasia in D Minor, K. 397
type: MusicRecording
duration: PT5M56S
duration ms: 356866
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Janos Sebestyen
in album: 50 of the Best: Mozart
  type: MusicAlbum
  date published: 2011-11-15
popularity: 2
genre: classical
genre: classical-era
isrc code: HKI199275608
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T22:06:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8a8dceded1f53de8564a59736c01e1a2bfdc3f74905baacbff6a807e0963cd52
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/HKI199275608
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8dceded1f53de8564a59736c01e1a2bfdc3f74905baacbff6a807e0963cd52. 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/HKI199275608.
  date published: 2026-07-08T03:20:19Z
audio: Fantasia in D Minor, K. 397
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 98.133
  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: 0.155
  additional property: Energy
    type: PropertyValue
    value: 0.009
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.939
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.922
  additional property: Liveness
    type: PropertyValue
    value: 0.097
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.666
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Symphony No. 38 in D Major, K. 504, "Prague": III. Finale: Presto
type: MusicRecording
duration: PT8M3S
duration ms: 483000
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: 1
genre: classical
genre: classical-era
isrc code: HKI199597003
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T14:34:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x75ef7c9108d1cc501456f794374c220a304ecbfca68581141744d9a844ffb714
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/HKI199597003
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ef7c9108d1cc501456f794374c220a304ecbfca68581141744d9a844ffb714. 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/HKI199597003.
  date published: 2026-07-08T03:20:19Z
audio: Symphony No. 38 in D Major, K. 504, "Prague": III. Finale: Presto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.221
  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: 0.455
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.878
  additional property: Liveness
    type: PropertyValue
    value: 0.182
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.531
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.134
  additional property: Key Name
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  additional property: Mode Name
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Adagio 2
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A Guided Tour of the Baroque Era, Vol. 5
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Skona Grona Dagar (Beautiful Green Days)
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track: Canon and Gigue in D Major: Canon in D Major
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Albinoni / Mozart / Bach: Famous Adagios
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A Guided Tour of the Classical Era, Vol. 2
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Mozart: 30 of the Best
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track: Concerto for Flute & Harp in C Major, K. 299: II. Andantino
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Szabo: Chamber Music and Choral Works
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