Slovak Philharmonic
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genre: classical
genre: orchestra
description: The Slovak Philharmonic or Slovak State Philharmonic (Slovenská filharmónia) is a Slovak symphony orchestra based in Bratislava. Founded in 1949, the orchestra has resided since the 1950s in the Baroq
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  date published: 1989-04-15
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-06-13T12:47:07Z
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  track: Requiem In D Minor, K. 626: Kyrie Eleison
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      date published: 2026-06-13T12:47:07Z
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  track: Requiem In D Minor, K. 626: Sequence: II. Tuba Mirum
  track: Requiem In D Minor, K. 626: Sequence: III. Rex Tremendae Majestatis
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  track: Requiem In D Minor, K. 626: Agnus Dei
  track: Requiem In D Minor, K. 626: Communion: Lux Aeterna
album: Mendelssohn: Symphony No. 4 / A Midsummer Night's Dream (Excerpts)
album: Blue Edition - Beethoven: Piano Sonata No. 18, Op. 31 No. 3 & Piano Concerto No. 5 "Emperor"
album: Frédéric Chopin: Piano Concerto No. 2, Op. 21
album: Haydn: Haydn's Symphonies - Symphony No. 94 in G major - Symphony No. 104 in D major
album: Tchaikovsky: Concerto for Violin and Orchestra in D major, Op. 35
album: Wolfgang Amadeus Mozart, Edvard Hagerup Grieg, Johannes Brahms
album: Tchaikovsky: Symphony No. 5 in E minor, Op. 64
album: Tchaikovsky - Piano Concerto No. 1 in B minor - Violin Concerto in D major, Op. 35.
album: Ravel: Mother Goose Suite, Saint-Saens: Carnival of the Animals, Rimsky -Korsakov: A Fairy Tale
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album: Peaceful Tchaikovsky
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album: Green Edition - Beethoven: 6 String Quartets, Op. 18 No. 1 & Piano Concerto No. 5, Op. 73
album: Red Edition - Beethoven: Grosse Fuge, Op. 133 & Piano Concerto No. 5, Op. 73
album: Red Edition - Beethoven: String Quartet No. 15 & Piano Concerto No. 5
album: Peter Breiner: Slovak Dances, Naughty & Sad
album: The Masterpieces - Beethoven: Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor"
album: William Perry: Toujours Provence & Other Music for Stage and Screen
album: Dvořák: Saint Ludmila, Op. 71, B. 144 (Live)
album: Classical Romance with Carl Maria von Weber
album: Smetana: Swedish Symphonic Poems
album: Mozart: Two Great Piano Concertos: Piano Concerto in D Minor, K. 446 · Piano Concerto in E Flat, K.
album: Greig's Piano Concerto: Concerto in A Minor for Piano and Orchestra · Suites from "Peer Gynt"
album: Diverting Mozart: Divertimento in D · The "Linz" and "Haffner" Symphonies
album: Brahms' Second & Third Symphonies: Brahms: Symphony No. 2 in D · Symphony No. 3 in F
album: Beethoven's Heroic Symphony: Beethoven: Symphony Symphony No. 3 "Heroic" · Symphony No. 8
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album: Von Weber: Clarinet Concertos - Mozart: Rondo for Flute
album: Beethoven: Ethereal Flow
album: Down The River Hah & Dances From The Hron Region
album: Famous Rhapsodies
track: Lacrimosa
track: Holberg Suite, Op. 40: I. Praludium (Allegro Vivace)
track: The Nutcracker, Op. 71: Danse de la fee (Dance of the Sugar Plum Fairy)
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track: Holberg Suite, Op. 40: II. Sarabande (Andante)
track: Holberg Suite, Op. 40: III. Gavotte (Allegretto) - Musette (poco Più Mosso) - Gavotte
track: Holberg Suite, Op. 40: IV. Air (Andante Religioso)
track: Egmont, Op. 84: Overture
track: Piano Concerto No. 2 In F Minor Op 21: II. Larghetto
track: Lohengrin, Act III: Prelude
track: Bilder einer Ausstellung: X. The Great Gate of Kiev
track: Holberg Suite, Op. 40: V. Rigaudon (Allegro Con Brio)
track: Symphony No. 9 in E Minor, Op. 95, "From the New World": II. Largo
track: Also sprach Zarathustra, Op. 30, TrV 176: I. Einleitung
track: Also sprach Zarathustra, Op. 30, TrV 176: I. Also sprach Zarathustra

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Requiem In D Minor, K. 626: Sequence: I. Dies Irae
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:53:06Z
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    value: Major

Requiem In D Minor, K. 626: Sequence: III. Rex Tremendae Majestatis
type: MusicRecording
duration: PT2M20S
duration ms: 140000
explicit: false
by artist: Slovak Philharmonic
by artist: Magdaléna Hajóssyová
by artist: Jozef Kundlák
by artist: Slovak Philharmonic Chorus
by artist: Peter Mikulas
by artist: Jaroslava Horska
by artist: Stefan Klimo
by artist: Vladimir Ruso
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Requiem In D Minor
  type: MusicAlbum
  date published: 1989-04-15
genre: orchestra
genre: symfonicky-orchestr
isrc code: HKI199278105
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T13:14:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8c6f5d76882186b07bc80181ee8c5cda26bdcd820ae992ee88702c6cbc54277a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278105
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6f5d76882186b07bc80181ee8c5cda26bdcd820ae992ee88702c6cbc54277a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278105.
  date published: 2026-06-13T12:47:07Z
audio: Requiem In D Minor, K. 626: Sequence: III. Rex Tremendae Majestatis
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.65
  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: 0.329
  additional property: Energy
    type: PropertyValue
    value: 0.074
  additional property: Speechiness
    type: PropertyValue
    value: 0.031
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.335
  additional property: Liveness
    type: PropertyValue
    value: 0.096
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.133
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.97
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Requiem In D Minor, K. 626: Sequence: IV. Recordare, Jesu Pie
type: MusicRecording
duration: PT6M27S
duration ms: 387000
explicit: false
by artist: Slovak Philharmonic
by artist: Vladimir Ruso
by artist: Jaroslava Horska
by artist: Slovak Philharmonic Chorus
by artist: Magdaléna Hajóssyová
by artist: Stefan Klimo
by artist: Peter Mikulas
by artist: Jozef Kundlák
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Requiem In D Minor
  type: MusicAlbum
  date published: 1989-04-15
genre: orchestra
genre: symfonicky-orchestr
isrc code: HKI199278106
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T01:41:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x803b16ed87aca116afbfeb2cf7d483656bce1a5abc3d2f33909214f739e5e802
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278106
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803b16ed87aca116afbfeb2cf7d483656bce1a5abc3d2f33909214f739e5e802. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278106.
  date published: 2026-06-13T12:47:07Z
audio: Requiem In D Minor, K. 626: Sequence: IV. Recordare, Jesu Pie
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 157.945
  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: 0.16
  additional property: Energy
    type: PropertyValue
    value: 0.118
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.976
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.193
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.06
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.876
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Requiem In D Minor, K. 626: Sequence: V. Confutatis Maledictis
type: MusicRecording
duration: PT3M7S
duration ms: 187000
explicit: false
by artist: Slovak Philharmonic
by artist: Vladimir Ruso
by artist: Slovak Philharmonic Chorus
by artist: Stefan Klimo
by artist: Magdaléna Hajóssyová
by artist: Jaroslava Horska
by artist: Jozef Kundlák
by artist: Peter Mikulas
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Requiem In D Minor
  type: MusicAlbum
  date published: 1989-04-15
genre: orchestra
genre: symfonicky-orchestr
isrc code: HKI199278107
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T17:19:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x99dc386f66731ef810bb9eb357a7fcb4e5507deea27df24dd624de484a08075f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278107
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dc386f66731ef810bb9eb357a7fcb4e5507deea27df24dd624de484a08075f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278107.
  date published: 2026-06-13T12:47:07Z
audio: Requiem In D Minor, K. 626: Sequence: V. Confutatis Maledictis
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 118.368
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.184
  additional property: Energy
    type: PropertyValue
    value: 0.023
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.315
  additional property: Liveness
    type: PropertyValue
    value: 0.115
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.426
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Requiem In D Minor, K. 626: Sequence: VI. Lacrimosa Dies Illa
type: MusicRecording
duration: PT3M18S
duration ms: 198666
explicit: false
by artist: Slovak Philharmonic
by artist: Jaroslava Horska
by artist: Vladimir Ruso
by artist: Peter Mikulas
by artist: Stefan Klimo
by artist: Slovak Philharmonic Chorus
by artist: Jozef Kundlák
by artist: Magdaléna Hajóssyová
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Requiem In D Minor
  type: MusicAlbum
  date published: 1989-04-15
genre: orchestra
genre: symfonicky-orchestr
isrc code: HKI199278108
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-02T01:42:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9e5602646eb4e2ce652aa09a11c513292aa7e9c10aa2f1742dd0c6e6e8224209
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278108
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5602646eb4e2ce652aa09a11c513292aa7e9c10aa2f1742dd0c6e6e8224209. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278108.
  date published: 2026-06-13T12:47:07Z
audio: Requiem In D Minor, K. 626: Sequence: VI. Lacrimosa Dies Illa
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 180.489
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.073
  additional property: Energy
    type: PropertyValue
    value: 0.095
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.957
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.644
  additional property: Liveness
    type: PropertyValue
    value: 0.568
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.073
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.366
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Requiem In D Minor, K. 626: Offertory: I. Domine Jesu Christe
type: MusicRecording
duration: PT3M34S
duration ms: 214666
explicit: false
by artist: Slovak Philharmonic
by artist: Slovak Philharmonic Chorus
by artist: Vladimir Ruso
by artist: Magdaléna Hajóssyová
by artist: Stefan Klimo
by artist: Peter Mikulas
by artist: Jozef Kundlák
by artist: Jaroslava Horska
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Requiem In D Minor
  type: MusicAlbum
  date published: 1989-04-15
genre: orchestra
genre: symfonicky-orchestr
isrc code: HKI199278109
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T17:17:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x143dd35a93fc66d7fdb3c2b2b3e27e5e0f9ad79b9753ffa7d5dcbc243068e128
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278109
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143dd35a93fc66d7fdb3c2b2b3e27e5e0f9ad79b9753ffa7d5dcbc243068e128. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278109.
  date published: 2026-06-13T12:47:07Z
audio: Requiem In D Minor, K. 626: Offertory: I. Domine Jesu Christe
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.117
  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: 0.419
  additional property: Energy
    type: PropertyValue
    value: 0.219
  additional property: Speechiness
    type: PropertyValue
    value: 0.028
  additional property: Acousticness
    type: PropertyValue
    value: 0.973
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.177
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.323
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.344
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Requiem In D Minor, K. 626: Offertory: II. Hostias Et Preces
type: MusicRecording
duration: PT4M39S
duration ms: 279333
explicit: false
by artist: Slovak Philharmonic
by artist: Jozef Kundlák
by artist: Magdaléna Hajóssyová
by artist: Peter Mikulas
by artist: Vladimir Ruso
by artist: Slovak Philharmonic Chorus
by artist: Jaroslava Horska
by artist: Stefan Klimo
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Requiem In D Minor
  type: MusicAlbum
  date published: 1989-04-15
genre: orchestra
genre: symfonicky-orchestr
isrc code: HKI199278110
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T06:04:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc24aa7b910fa91e47c6b0c4208b29ea4b1c7dceba458a76159d89572e257a64b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278110
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24aa7b910fa91e47c6b0c4208b29ea4b1c7dceba458a76159d89572e257a64b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278110.
  date published: 2026-06-13T12:47:07Z
audio: Requiem In D Minor, K. 626: Offertory: II. Hostias Et Preces
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 116.385
  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: 0.16
  additional property: Energy
    type: PropertyValue
    value: 0.13
  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
    value: 0.964
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.063
  additional property: Liveness
    type: PropertyValue
    value: 0.124
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.079
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.852
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Requiem In D Minor, K. 626: Sanctus
type: MusicRecording
duration: PT1M38S
duration ms: 98000
explicit: false
by artist: Slovak Philharmonic
by artist: Jozef Kundlák
by artist: Jaroslava Horska
by artist: Peter Mikulas
by artist: Slovak Philharmonic Chorus
by artist: Vladimir Ruso
by artist: Stefan Klimo
by artist: Magdaléna Hajóssyová
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Requiem In D Minor
  type: MusicAlbum
  date published: 1989-04-15
genre: orchestra
genre: symfonicky-orchestr
isrc code: HKI199278111
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T06:41:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcb5047bf98ccce74759a9ac3a29380f8d9a726f15438f70940bd5bec940ea553
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278111
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5047bf98ccce74759a9ac3a29380f8d9a726f15438f70940bd5bec940ea553. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278111.
  date published: 2026-06-13T12:47:07Z
audio: Requiem In D Minor, K. 626: Sanctus
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.57
  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: 0.166
  additional property: Energy
    type: PropertyValue
    value: 0.256
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.914
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.244
  additional property: Liveness
    type: PropertyValue
    value: 0.542
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.274
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.418
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Requiem In D Minor, K. 626: Benedictus
type: MusicRecording
duration: PT5M36S
duration ms: 336333
explicit: false
by artist: Slovak Philharmonic
by artist: Vladimir Ruso
by artist: Slovak Philharmonic Chorus
by artist: Magdaléna Hajóssyová
by artist: Jaroslava Horska
by artist: Jozef Kundlák
by artist: Peter Mikulas
by artist: Stefan Klimo
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Requiem In D Minor
  type: MusicAlbum
  date published: 1989-04-15
genre: orchestra
genre: symfonicky-orchestr
isrc code: HKI199278112
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T14:16:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1fc22cba164cda6c66760260d6e319f8958e4fce67ddab30fa6f7bed7c9cc7cd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278112
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
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 0x1fc22cba164cda6c66760260d6e319f8958e4fce67ddab30fa6f7bed7c9cc7cd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKI199278112.
  date published: 2026-06-13T12:53:06Z
audio: Requiem In D Minor, K. 626: Benedictus
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.265
  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: 0.251
  additional property: Energy
    type: PropertyValue
    value: 0.154
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.296
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.107
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.328
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Requiem In D Minor, K. 626: Agnus Dei
type: MusicRecording
duration: PT3M46S
duration ms: 226000
explicit: false
by artist: Slovak Philharmonic
by artist: Peter Mikulas
by artist: Magdaléna Hajóssyová
by artist: Slovak Philharmonic Chorus
by artist: Jozef Kundlák
by artist: Jaroslava Horska
by artist: Vladimir Ruso
by artist: Stefan Klimo
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Requiem In D Minor
  type: MusicAlbum
  date published: 1989-04-15
genre: orchestra
genre: symfonicky-orchestr
isrc code: HKI199278113
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T11:25:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5110b06f89c1abb8ef8100be5996d85783f1567d8e4c95c23ecd4103b25d4e2a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278113
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5110b06f89c1abb8ef8100be5996d85783f1567d8e4c95c23ecd4103b25d4e2a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278113.
  date published: 2026-06-13T12:47:07Z
audio: Requiem In D Minor, K. 626: Agnus Dei
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.554
  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: 0.081
  additional property: Energy
    type: PropertyValue
    value: 0.056
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.948
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.845
  additional property: Liveness
    type: PropertyValue
    value: 0.097
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.433
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Requiem In D Minor, K. 626: Communion: Lux Aeterna
type: MusicRecording
duration: PT5M48S
duration ms: 348266
explicit: false
by artist: Slovak Philharmonic
by artist: Jozef Kundlák
by artist: Jaroslava Horska
by artist: Peter Mikulas
by artist: Stefan Klimo
by artist: Slovak Philharmonic Chorus
by artist: Vladimir Ruso
by artist: Magdaléna Hajóssyová
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Requiem In D Minor
  type: MusicAlbum
  date published: 1989-04-15
genre: orchestra
genre: symfonicky-orchestr
isrc code: HKI199278114
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T08:06:10+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb9d16badce4dac73eccdf5a2f0d97fd59f2fa85e8dce57fd9d45b8247bc5fd90
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199278114
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
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 0xb9d16badce4dac73eccdf5a2f0d97fd59f2fa85e8dce57fd9d45b8247bc5fd90. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKI199278114.
  date published: 2026-06-13T12:53:06Z
audio: Requiem In D Minor, K. 626: Communion: Lux Aeterna
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.723
  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: 0.163
  additional property: Energy
    type: PropertyValue
    value: 0.171
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.973
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.215
  additional property: Liveness
    type: PropertyValue
    value: 0.084
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.121
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.97
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Mendelssohn: Symphony No. 4 / A Midsummer Night's Dream (Excerpts)
type: MusicAlbum
date published: 1988-02-05
track: A Midsummer Night's Dream Overture, Op. 21, MWV P3: Overture, Op. 21
  type: MusicRecording
  duration: PT12M17S
  duration ms: 737000
  explicit: false
  by artist: Felix Mendelssohn
  by artist: Slovak Philharmonic
  by artist: Anthony Bramall
  in album: Mendelssohn: Symphony No. 4 / A Midsummer Night's Dream (Excerpts)
    type: MusicAlbum
    date published: 1988-02-05
  popularity: 2
  genre: classical
  genre: early-romantic-era
  genre: german-romanticism
  genre: classical-piano
  genre: choral
  genre: chamber-music
  isrc code: HKI199270405
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T15:59:19+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5bf1d33cc83bac8fc55b630b330702da615a623c3860add87a6a205304a4f36d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960284
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960284
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199270405
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T17:23:26Z
  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 0x5bf1d33cc83bac8fc55b630b330702da615a623c3860add87a6a205304a4f36d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HKI199270405.
    date published: 2026-07-30T17:23:26Z
  audio: A Midsummer Night's Dream Overture, Op. 21, MWV P3: Overture, Op. 21
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 141.346
    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: 0.251
    additional property: Energy
      type: PropertyValue
      value: 0.113
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.963
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.892
    additional property: Liveness
      type: PropertyValue
      value: 0.08
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.068
    additional property: Loudness (dB)
      type: PropertyValue
      value: -23.778
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Ein Sommernachtstraum, Op. 61, MWV M13: Act II: Entr'acte: Scherzo
  type: MusicRecording
  duration: PT4M52S
  duration ms: 292000
  explicit: false
  by artist: Felix Mendelssohn
  by artist: Slovak Philharmonic
  by artist: Anthony Bramall
  in album: Mendelssohn: Symphony No. 4 / A Midsummer Night's Dream (Excerpts)
    type: MusicAlbum
    date published: 1988-02-05
  popularity: 8
  genre: classical
  genre: early-romantic-era
  genre: german-romanticism
  genre: classical-piano
  genre: choral
  genre: chamber-music
  isrc code: HKI199270406
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-18T14:05:03+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x1a3aca5e82ae53d35b93797dfcfcb74ceeb3f02c0fd8d73ae5849592cf442c29
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956302
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956302
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199270406
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3aca5e82ae53d35b93797dfcfcb74ceeb3f02c0fd8d73ae5849592cf442c29. 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/HKI199270406.
    date published: 2026-07-02T03:30:09Z
  audio: Ein Sommernachtstraum, Op. 61, MWV M13: Act II: Entr'acte: Scherzo
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 132.523
    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: 0.515
    additional property: Energy
      type: PropertyValue
      value: 0.202
    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.954
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.937
    additional property: Liveness
      type: PropertyValue
      value: 0.119
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.654
    additional property: Loudness (dB)
      type: PropertyValue
      value: -30.176
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Ein Sommernachtstraum, Op. 61, MWV M13: Act III: Nocturne
  type: MusicRecording
  duration: PT6M27S
  duration ms: 387000
  explicit: false
  by artist: Felix Mendelssohn
  by artist: Slovak Philharmonic
  by artist: Anthony Bramall
  in album: Mendelssohn: Symphony No. 4 / A Midsummer Night's Dream (Excerpts)
    type: MusicAlbum
    date published: 1988-02-05
  popularity: 7
  genre: classical
  genre: early-romantic-era
  genre: german-romanticism
  genre: classical-piano
  genre: choral
  genre: chamber-music
  isrc code: HKI199270408
  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Ein Sommernachtstraum, Op. 61, MWV M13: Act III: Nocturne

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-06-23T09:48:06+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x16770da22de32c74a798c17b02d7bb7a7a1d1d58e4abcc618cd6038120995d78

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/HKI199270408

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
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Frédéric Chopin: Piano Concerto No. 2, Op. 21
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Haydn: Haydn's Symphonies - Symphony No. 94 in G major - Symphony No. 104 in D major
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Tchaikovsky: Concerto for Violin and Orchestra in D major, Op. 35
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Wolfgang Amadeus Mozart, Edvard Hagerup Grieg, Johannes Brahms
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Tchaikovsky: Symphony No. 5 in E minor, Op. 64
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Tchaikovsky - Piano Concerto No. 1 in B minor - Violin Concerto in D major, Op. 35.
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Ravel: Mother Goose Suite, Saint-Saens: Carnival of the Animals, Rimsky -Korsakov: A Fairy Tale
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Mendelssohn-Bartholdy: Concerto for Violin and Orchestra + Concertos Nos. 1 and 2
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J. Strauss, Jr: The Waltz King
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T06:42:11Z
audio: String Quartet No. 5 in A Major, Op. 18, No. 5: Iii. Andante cantabile - Poco adagio
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Violin Sonata No. 10 in G Major, Op. 96: Ii. Adagio espressivo
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duration: PT6M15S
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by artist: Takako Nishizaki
by artist: Jenő Jandó
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T08:26:41Z
audio: Violin Sonata No. 10 in G Major, Op. 96: Ii. Adagio espressivo
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Piano Sonata No. 23 in F Minor, Op. 57, "appassionata": Ii. Andante con moto
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duration: PT5M47S
duration ms: 347973
explicit: false
by artist: Ludwig van Beethoven
by artist: Jenő Jandó
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T13:04:34Z
audio: Piano Sonata No. 23 in F Minor, Op. 57, "appassionata": Ii. Andante con moto
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Cello Sonata No. 3 in A Major, Op. 69: Iii. Adagio cantabile
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duration: PT1M30S
duration ms: 90013
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by artist: Maria Kliegel
by artist: Nina Tichman
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Cello Sonata No. 3 in A Major, Op. 69: Iii. Adagio cantabile
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Piano Concerto No. 3 in C Minor, Op. 37: Ii. Largo
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duration ms: 592160
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by artist: Capella Istropolitana
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T13:04:34Z
audio: Piano Concerto No. 3 in C Minor, Op. 37: Ii. Largo
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Septet in E-flat Major, Op. 20: Ii. Adagio cantabile
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duration: PT8M41S
duration ms: 521000
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by artist: Ludwig van Beethoven
by artist: József Balogh
by artist: Jozsef Vajda
by artist: Jeno Kevehazi
by artist: Ildiko Hegyi
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by artist: Péter Szabó
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Septet in E-flat Major, Op. 20: Ii. Adagio cantabile
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Piano Sonata No. 14 in C-sharp Minor, Op. 27, No. 2, "moonlight": I. Adagio sostenuto
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata No. 14 in C-sharp Minor, Op. 27, No. 2, "moonlight": I. Adagio sostenuto
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Romance No. 2 in F Major, Op. 50: Romance No. 2 in F Major, Op. 50
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Beethoven For Inspiration
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Peaceful Tchaikovsky
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track: 6 Morceaux, Op. 51: No. 6. Valse sentimentale
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track: Swan Lake, Op. 20: Act I: The terrace in front of the palace of Prince Siegfried: No. 4. Pas de trois: I. Intrada
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track: The Sleeping Beauty, Op. 66: Act Ii: The Vision: Panorama (Andantino: The Awakening)
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track: The Snow Maiden, Op. 12: Act Iv: Declamation of the Fairy of Sping

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String Quartet No. 1 in D Major, Op. 11: Ii. Andante cantabile
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Romance in F Minor, Op. 5
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Violin Concerto in D Major, Op. 35: Ii. Canzonetta: Andante
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  date published: 2026-07-08T03:20:19Z
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12 Morceaux, Op. 40: No. 2. Chanson triste in G Minor
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subject of: OpenTimestamps Proof of Existence
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6 Morceaux, Op. 19 (version for cello and orchestra): No. 4. Nocturne
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T08:30:10Z
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The Sleeping Beauty, Op. 66: Act Ii: The Vision: Panorama (Andantino: The Awakening)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:44:50Z
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Album for the Young, Op. 39: No. 21. Sweet Dreams (Douce rãªverie)
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subject of: OpenTimestamps Proof of Existence
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The Nutcracker Suite, Op. 71a: Iii. Dance of the Sugar Plum Fairies
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Souvenir d'un lieu cher, Op. 42 (arr. A.k. Glazunov for violin and orchestra): Iii. Mélodie
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6 Romances, Op. 6 (arr. P. Nagy for piano): No. 6. None But the Lonely Heart
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Classical Romance with Carl Maria von Weber
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  additional property: OTSVerifyInstructions
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    date published: 2026-07-30T00:53:20Z
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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: Symphony No. 3 in E-Flat Major, Op. 55 "Eroica": IV. Finale. Allegro molto
track: Frühlingsstimmen, Op. 410

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OpenTimestamps Proof of Existence
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date published: 2026-07-30T04:47:22Z

Symphony No. 3 in E-Flat Major, Op. 55 "Eroica": III. Scherzo. Allegro vivace
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Symphony No. 3 in E-Flat Major, Op. 55 "Eroica": IV. Finale. Allegro molto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:36:16Z
audio: Symphony No. 3 in E-Flat Major, Op. 55 "Eroica": IV. Finale. Allegro molto
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Frühlingsstimmen, Op. 410
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: Frühlingsstimmen, Op. 410
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Von Weber: Clarinet Concertos - Mozart: Rondo for Flute
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Beethoven: Ethereal Flow
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Down The River Hah & Dances From The Hron Region
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Famous Rhapsodies
type: MusicAlbum
date published: 1993

Lacrimosa
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by artist: Michel Piquemal Vocal Ensemble
by artist: Hungarian State Opera Chorus
by artist: Oxford Schola Cantorum
by artist: Slovak Philharmonic Chorus
by artist: Hungarian State Opera Orchestra
by artist: Orchestre De La Cite
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subject of: OpenTimestamps Proof of Existence
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Holberg Suite, Op. 40: I. Praludium (Allegro Vivace)
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subject of: OpenTimestamps Proof of Existence
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audio: Holberg Suite, Op. 40: I. Praludium (Allegro Vivace)
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The Nutcracker, Op. 71: Danse de la fee (Dance of the Sugar Plum Fairy)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
audio: The Nutcracker, Op. 71: Danse de la fee (Dance of the Sugar Plum Fairy)
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The Nutcracker Suite, Op. 71a: III. Dance of the Sugar Plum Fairies
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T12:51:24Z
audio: The Nutcracker Suite, Op. 71a: III. Dance of the Sugar Plum Fairies
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Holberg Suite, Op. 40: II. Sarabande (Andante)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T20:11:13Z
audio: Holberg Suite, Op. 40: II. Sarabande (Andante)
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Holberg Suite, Op. 40: III. Gavotte (Allegretto) - Musette (poco Più Mosso) - Gavotte
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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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Holberg Suite, Op. 40: IV. Air (Andante Religioso)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
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Egmont, Op. 84: Overture
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audio: Egmont, Op. 84: Overture
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Piano Concerto No. 2 In F Minor Op 21: 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: 2026-07-08T03:20:19Z
audio: Piano Concerto No. 2 In F Minor Op 21: II. Larghetto
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Lohengrin, Act III: Prelude
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by artist: Slovak Philharmonic
by artist: Michael Halasz
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Lohengrin, Act III: Prelude
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Bilder einer Ausstellung: X. The Great Gate of Kiev
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by artist: Maurice Ravel
by artist: Slovak Philharmonic
by artist: Daniel Nazareth
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Bilder einer Ausstellung: X. The Great Gate of Kiev
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Holberg Suite, Op. 40: V. Rigaudon (Allegro Con Brio)
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by artist: Libor Pešek
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by artist: Slovak Philharmonic
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Holberg Suite, Op. 40: V. Rigaudon (Allegro Con Brio)
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Symphony No. 9 in E Minor, Op. 95, "From the New World": II. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T16:01:17Z
audio: Symphony No. 9 in E Minor, Op. 95, "From the New World": II. Largo
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Also sprach Zarathustra, Op. 30, TrV 176: I. Einleitung
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popularity: 2
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T04:14:58Z
audio: Also sprach Zarathustra, Op. 30, TrV 176: I. Einleitung
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Also sprach Zarathustra, Op. 30, TrV 176: I. Also sprach Zarathustra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T19:53:13Z
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  additional property: Energy
    type: PropertyValue
    value: 0.155
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.813
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.898
  additional property: Liveness
    type: PropertyValue
    value: 0.112
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.47
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major