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genre: polka
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subject of: OpenTimestamps Proof of Existence
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album: Digital Masterworks. Popular Pieces for Orchestra
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album: The Mozart 100 Collection
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album: Kinder Klassik - Welt der Tiere
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album: Choral Music - Bortniansky, D. / Schubert, F. / Bruckner, A. / Bruch, M. / Mendelssohn, Felix / Silcher, F. / Rheinberger, J.G.
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album: Spohr, L.: Faust [Opera]
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album: Sunset Classics
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album: Introducing Sterling Records
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album: Classical Moods: Calm
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album: The 100 Most Essential Pieces of Classical Music
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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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album: Die Grossen Deutschen Filmmelodien
album: Classical Mega Hits
album: Jurmann, W.: Film Music (The Original Motion Picture Scores (Arp)
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album: Best - Mozart
album: Best of Mozart Operas
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album: Die 100 Beliebtesten Melodien Der Klassik Fur Kinder
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OpenTimestamps Proof of Existence
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6cf2c91c0dc7b19c955dfab502dd4f8b61e58d536421b0fef316cc8206108c. 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/SEAEM0429080.
date published: 2026-07-02T03:30:09Z

Violin Partita No. 3 in E Major, BWV 1006: I. Preludio
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Die Grossen Deutschen Filmmelodien
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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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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T13:32:09Z
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Relaxing Classical Music for Work
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Soft Classical Music for Relaxing
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    date published: 2026-07-22T15:09:07Z
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100 Kickass Classical Pieces
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date published: 2013-10-15

Johann Strauss II - The Genius Of
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    date published: 2026-07-02T03:55:08Z
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track: Wiener Bonbons Walzer, Op. 307
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Popular Pieces for Orchestra
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date published: 2017-12-08

Strauss - Famous Waltzes
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Strauss - Famous Melodies
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Vivaldi - Albrechtsberger
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Klughardt: Lenore, Op. 27 - Gernsheim: Zu Einem Drama, Op. 82
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Strauss : Valses & Polkas
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track: Tritsch-tratsch-polka, Op. 309: Polka
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track: Episode, Op. 296: Polka française
track: Louischen, Op. 339: Polka française

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OpenTimestamps Proof of Existence
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date published: 2026-07-02T03:55:08Z

Fata morgana, Op. 330: Polka Mazurka
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Episode, Op. 296: Polka française
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Louischen, Op. 339: Polka française
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  date published: 2026-07-02T03:55:08Z
audio: Louischen, Op. 339: Polka française
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Vivaldi and Albrechtsberger: Concertos for Guitar and Recorder
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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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Wolfgang Amadeus Mozart: Very Classics. The Magic Flute
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Digitalmasterworks. Famous Overtures (Volumen I)
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Gulda & Sullivan - Cello Concertos
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Joaquín Rodrigo: Concierto Pastoral
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Symphony Orchestra Baden-Baden / L'histoire De La Musique
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Wolfgang Amadeus Mozart
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La Flauta Mágica - Wolfgang Amadeus Mozart
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    date published: 2026-06-13T12:47:07Z
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Música Clássica: Mais Famosas
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T05:09:12Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-22T19:35:41Z
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track: Concerto No. 1 in E-Flat Major for Piano and Orchestra, S. 124: I. Allegro maestoso - Tempo giusto
track: Turandot, Act 3: "Nessun dorma"

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date published: 2026-07-02T03:55:08Z

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Concerto No. 1 in E-Flat Major for Piano and Orchestra, S. 124: I. Allegro maestoso - Tempo giusto
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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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Turandot, Act 3: "Nessun dorma"
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by artist: Andrej Kucharsky
by artist: Jan Štych
by artist: Brno Janácek Opera Orchestra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T20:01:51Z
audio: Turandot, Act 3: "Nessun dorma"
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Best - Mozart
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track: Requiem Mass in D Minor, K. 626: II. Dies irae
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
  audio: Requiem Mass in D Minor, K. 626: II. Dies irae
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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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track: Andante in C Major for Flute and Orchestra, K. 315

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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-02T05:09:12Z

Sonata No. 12 in F Major for Piano, K. 332: Adagio
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Andante in C Major for Flute and Orchestra, K. 315
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Andante in C Major for Flute and Orchestra, K. 315
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Best of Mozart Operas
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    date published: 2026-07-02T03:55:08Z
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  genre: classical-era
  isrc code: FR3KD1505414
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-27T09:49:58+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x89d4d4c58b3eaf0649482e355ec3fae8fe15c09098909d2227d087ce9f57c2ce
  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/FR3KD1505414
  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 0x89d4d4c58b3eaf0649482e355ec3fae8fe15c09098909d2227d087ce9f57c2ce. 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/FR3KD1505414.
    date published: 2026-07-02T03:55:08Z
  audio: Die Zauberflöte, K. 620: "Bei Männern, welche Liebe fühlen"
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 118.505
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.325
    additional property: Energy
      type: PropertyValue
      value: 0.023
    additional property: Speechiness
      type: PropertyValue
      value: 0.052
    additional property: Acousticness
      type: PropertyValue
      value: 0.963
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.103
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.118
    additional property: Loudness (dB)
      type: PropertyValue
      value: -26.658
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Die Zauberflöte, K. 620: "Ein Mädchen oder Weibchen wünscht Papageno sich"
  type: MusicRecording
  duration: PT4M4S
  duration ms: 244360
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Peter Edelmann
  by artist: Sudwestfunk Symphony Orchestra Baden-Baden
  by artist: Klaus Arp
  in album: Best of Mozart Operas
    type: MusicAlbum
    date published: 2015-01-01
  genre: classical
  genre: classical-era
  isrc code: FR3KD1505415
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Die Zauberflöte, K. 620: "Ein Mädchen oder Weibchen wünscht Papageno sich"
track: Die Zauberflöte, K. 620: "Ach ich fühl's, es ist verschwunden"
track: Die Zauberflöte, K. 620: "In diesen heilgen Hallen"
track: Die Zauberflöte, K. 620: "Der Hölle Rache kocht in meinem Herzen"
track: Die Zauberflöte, K. 620: "Papagena, Papageno"

CopyrightRegisteredAt
type: PropertyValue
value: 2026-06-25T23:42:28+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x487c29a8cc00bcff16f534a4f24801f66ff1d421e9e71b08e369710eb04bb312

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956304

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

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR3KD1505415

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

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487c29a8cc00bcff16f534a4f24801f66ff1d421e9e71b08e369710eb04bb312. 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/FR3KD1505415.
date published: 2026-07-02T03:55:08Z

Die Zauberflöte, K. 620: "Ein Mädchen oder Weibchen wünscht Papageno sich"
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 142.198
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: 0.384
additional property: Energy
  type: PropertyValue
  value: 0.093
additional property: Speechiness
  type: PropertyValue
  value: 0.036
additional property: Acousticness
  type: PropertyValue
  value: 0.928
additional property: Instrumentalness
  type: PropertyValue
  value: 0.026
additional property: Liveness
  type: PropertyValue
  value: 0.06
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.252
additional property: Loudness (dB)
  type: PropertyValue
  value: -22.945
additional property: Key Name
  type: PropertyValue
  value: F
additional property: Mode Name
  type: PropertyValue
  value: Major

Die Zauberflöte, K. 620: "Ach ich fühl's, es ist verschwunden"
type: MusicRecording
duration: PT4M10S
duration ms: 250706
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Maria Venuti
by artist: Sudwestfunk Symphony Orchestra Baden-Baden
by artist: Klaus Arp
in album: Best of Mozart Operas
  type: MusicAlbum
  date published: 2015-01-01
genre: classical
genre: classical-era
isrc code: FR3KD1505416
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T10:49:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1105bde34d1604d0b8a98168702a9653b0ede1600c427805e95c891f07f47a40
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959123
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959123
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR3KD1505416
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T11:35:32Z
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 0x1105bde34d1604d0b8a98168702a9653b0ede1600c427805e95c891f07f47a40. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FR3KD1505416.
  date published: 2026-07-22T11:35:32Z
audio: Die Zauberflöte, K. 620: "Ach ich fühl's, es ist verschwunden"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 67.306
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.302
  additional property: Energy
    type: PropertyValue
    value: 0.142
  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.98
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.094
  additional property: Liveness
    type: PropertyValue
    value: 0.106
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.037
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.522
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Die Zauberflöte, K. 620: "In diesen heilgen Hallen"
type: MusicRecording
duration: PT4M25S
duration ms: 265013
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Johannes Schmidt
by artist: Sudwestfunk Symphony Orchestra Baden-Baden
by artist: Klaus Arp
in album: Best of Mozart Operas
  type: MusicAlbum
  date published: 2015-01-01
genre: classical
genre: classical-era
isrc code: FR3KD1505417
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T13:18:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc96c1c606c5e4eea735ed716435a39dcee566fec89035a18daab7452b1d83cbf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959134
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959134
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR3KD1505417
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T13:34:27Z
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 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 0xc96c1c606c5e4eea735ed716435a39dcee566fec89035a18daab7452b1d83cbf. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/FR3KD1505417.
  date published: 2026-07-22T13:34:27Z
audio: Die Zauberflöte, K. 620: "In diesen heilgen Hallen"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.929
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.163
  additional property: Energy
    type: PropertyValue
    value: 0.109
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.979
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.635
  additional property: Liveness
    type: PropertyValue
    value: 0.163
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.11
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.91
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Zauberflöte, K. 620: "Der Hölle Rache kocht in meinem Herzen"
type: MusicRecording
duration: PT2M54S
duration ms: 174880
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Masella Holzapfel
by artist: Sudwestfunk Symphony Orchestra Baden-Baden
by artist: Klaus Arp
in album: Best of Mozart Operas
  type: MusicAlbum
  date published: 2015-01-01
genre: classical
genre: classical-era
isrc code: FR3KD1505423
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T07:11:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc2475e7f35c099c4f1a472d255603feaef3b93574477d78ac3acef4ccb200fe1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959107
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959107
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR3KD1505423
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T10:14:23Z
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 0xc2475e7f35c099c4f1a472d255603feaef3b93574477d78ac3acef4ccb200fe1. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:14:23Z), 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/FR3KD1505423.
  date published: 2026-07-22T10:14:23Z
audio: Die Zauberflöte, K. 620: "Der Hölle Rache kocht in meinem Herzen"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 74.434
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.414
  additional property: Energy
    type: PropertyValue
    value: 0.152
  additional property: Speechiness
    type: PropertyValue
    value: 0.064
  additional property: Acousticness
    type: PropertyValue
    value: 0.945
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.029
  additional property: Liveness
    type: PropertyValue
    value: 0.106
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.167
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.659
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Zauberflöte, K. 620: "Papagena, Papageno"
type: MusicRecording
duration: PT2M32S
duration ms: 152493
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Peter Edelmann
by artist: Susanne Leitz
by artist: Sudwestfunk Symphony Orchestra Baden-Baden
by artist: Klaus Arp
in album: Best of Mozart Operas
  type: MusicAlbum
  date published: 2015-01-01
genre: classical
genre: classical-era
isrc code: FR3KD1505424
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T14:26:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3c7672bf9afc9de55eb70445864d980ed4ef733031a3a11c215e4c2ddc6ae6b2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959144
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959144
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR3KD1505424
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T17:29:05Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7672bf9afc9de55eb70445864d980ed4ef733031a3a11c215e4c2ddc6ae6b2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:29:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR3KD1505424.
  date published: 2026-07-22T17:29:05Z
audio: Die Zauberflöte, K. 620: "Papagena, Papageno"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 127.141
  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: 0.453
  additional property: Energy
    type: PropertyValue
    value: 0.183
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.926
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.245
  additional property: Liveness
    type: PropertyValue
    value: 0.065
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.394
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.383
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Vivaldi Hits
type: MusicAlbum
date published: 2019-03-31
track: Concerto for 2 Violins in A Minor, RV 522: III. Allegro
  type: MusicRecording
  duration: PT3M11S
  duration ms: 191657
  explicit: false
  by artist: Antonio Vivaldi
  by artist: Herwig Zack
  by artist: Rainer Kussmaul
  by artist: Martin Sieghart
  by artist: Stuttgart Chamber Orchestra
  in album: Vivaldi Hits
    type: MusicAlbum
    date published: 2019-03-31
  isrc code: SEWDL9250723
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T10:46:57+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7b1fc18eaaebdaf412d11c100569ed20344baeb11d46b79330d611495307a3f9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959123
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959123
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL9250723
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T11:35:32Z
  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
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    date published: 2026-07-22T11:35:32Z
  audio: Concerto for 2 Violins in A Minor, RV 522: III. Allegro
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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      value: 0.947
    additional property: Instrumentalness
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      value: 0.656
    additional property: Liveness
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.479
    additional property: Loudness (dB)
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      value: -17.826
    additional property: Key Name
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      value: A
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Die 100 Beliebtesten Melodien Der Klassik Fur Kinder
type: MusicAlbum
date published: 2015-10-09
track: Zauberflöte: Der Hölle Rache
  type: MusicRecording
  duration: PT2M54S
  duration ms: 174893
  explicit: false
  by artist: Sudwestrundfunk Symphony Orchestra
  by artist: Maszella Holzapfel
  in album: Die 100 Beliebtesten Melodien Der Klassik Fur Kinder
    type: MusicAlbum
    date published: 2015-10-09
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  additional property: OTSHash
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    value: 956889
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITS041400137
  additional property: OTSTimestamp
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    value: 2026-07-06T06:56:49Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc91176f6cb6165526a05fd06d1f82b393f9c2a468d0d9f849e1e20de463de8e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITS041400137.
    date published: 2026-07-06T06:56:49Z
  audio: Zauberflöte: Der Hölle Rache
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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      value: 1
    additional property: Time Signature
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    additional property: Danceability
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Mozart Top 10
type: MusicAlbum
date published: 2020-10-13