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genre: classical
description: 250px|thumb| Josef Alois Krips (8 April 1902 – 13 October 1974) was an Austrian conductor and violinist. Life and career Krips was born in Vienna. His father was Josef Jakob Krips, a medical doctor
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followers: 1510
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album: Il dissoluto punito ossia Il Don Giovanni
album: Mozart, Einem, Wagner & R. Strauss: Opera Arias
album: Mozart: Così fan tutte, K. 588 (Live)
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album: Mozart: Die Entführung aus dem Serail; Turkish March; Opera Arias (Remastered 2024)
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album: Haydn: Symphony No. 104; Weber: Euryanthe Overture (Remastered 2024)
album: Schumann: Papillons; Arabeske; Piano Concerto (Wilhelm Kempff: Complete Decca Recordings, Vol. 5)
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album: Tossy Spivakovsky Live: 8 Violin Concertos
album: Milestones of a Piano Legend: Sir Clifford Curzon, Vol. 8
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album: Schubert, Schumann, Brahms, Wolf, Strauss & Marx
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album: Christa Ludwig
album: The Essentials: Verdi
album: British Symphonies
album: Operas and Operettas - Donizetti, G. / Lehar, F. / Kalman, E. / Boito, A. / Puccini, G. / Bellini, V. / Mozart, W.A. (Festival of the Primadonnas)
album: Wagner: Die Meistersinger von Nürnberg
album: Hilde Gueden Sings Operetta
album: A To Z Of Conductors
album: Mahler: Das Lied von der Erde

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  date published: 2026-07-29T14:28:24Z
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subject of: OpenTimestamps Proof of Existence
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Il dissoluto punito ossia Il Don Giovanni
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Mozart, Einem, Wagner & R. Strauss: Opera Arias
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30198bbb59655ffec104be3cd69b1900fb4d05117c4ce26a33f8a9b68eb54ab. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB950769701 — a six-check JSON result.
    date published: 2026-07-02T03:30:09Z
  audio: Così fan tutte, K. 588: Overture
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    additional property: Instrumentalness
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    additional property: Valence (Positivity)
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Leonie Rysanek
type: MusicAlbum
date published: 2016-07-01

Schubert: Symphony No. 9; Weber: Oberon Overture (2024 Remaster)
type: MusicAlbum
date published: 2024-05-24
track: Symphony No. 9 in C Major, D. 944 "The Great": I. Andante – Allegro ma non troppo - 2024 Remaster
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  duration: PT13M59S
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  by artist: Franz Schubert
  by artist: London Symphony Orchestra
  by artist: Josef Krips
  in album: Schubert: Symphony No. 9; Weber: Oberon Overture (2024 Remaster)
    type: MusicAlbum
    date published: 2024-05-24
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: GBF075810651
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960314
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075810651
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T21:00:46Z
  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 0x224a03dceeac48e280c08dd2f5698a06bc63c618aa17e55c037042a9e9bbb672. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075810651 — a six-check JSON result.
    date published: 2026-07-30T21:00:46Z
  audio: Symphony No. 9 in C Major, D. 944 "The Great": I. Andante – Allegro ma non troppo - 2024 Remaster
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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    additional property: Instrumentalness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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track: Symphony No. 9 in C Major, D. 944 "The Great": II. Andante con moto - 2024 Remaster
  type: MusicRecording
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  by artist: Franz Schubert
  by artist: London Symphony Orchestra
  by artist: Josef Krips
  in album: Schubert: Symphony No. 9; Weber: Oberon Overture (2024 Remaster)
    type: MusicAlbum
    date published: 2024-05-24
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: GBF075810652
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x205ea42cc7e40d304052422770b5a5b7bfb27b9ffae0a08fdaec4e59278a5916. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075810652 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Symphony No. 9 in C Major, D. 944 "The Great": II. Andante con moto - 2024 Remaster
    type: AudioObject
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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track: Symphony No. 9 in C Major, D. 944 "The Great": III. Scherzo. Allegro vivace - 2024 Remaster
  type: MusicRecording
  duration: PT9M53S
  duration ms: 593000
  explicit: false
  by artist: Franz Schubert
  by artist: London Symphony Orchestra
  by artist: Josef Krips
  in album: Schubert: Symphony No. 9; Weber: Oberon Overture (2024 Remaster)
    type: MusicAlbum
    date published: 2024-05-24
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: GBF075810653
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Symphony No. 9 in C Major, D. 944 "The Great": III. Scherzo. Allegro vivace - 2024 Remaster
track: Symphony No. 9 in C Major, D. 944 "The Great": IV. Finale. Allegro vivace - 2024 Remaster
track: Oberon, J. 306: Overture - 2024 Remaster

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0xe91c93f544e2de00e0aa256e2e7fa027901a75f9e6e9c837d4424a3cdbabbe4d

OTSHash
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OTSBitcoinBlock
type: PropertyValue
value: 957120

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957120

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075810653

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:22:41Z

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 0xe91c93f544e2de00e0aa256e2e7fa027901a75f9e6e9c837d4424a3cdbabbe4d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075810653 — a six-check JSON result.
date published: 2026-07-08T03:22:41Z

Symphony No. 9 in C Major, D. 944 "The Great": III. Scherzo. Allegro vivace - 2024 Remaster
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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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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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Symphony No. 9 in C Major, D. 944 "The Great": IV. Finale. Allegro vivace - 2024 Remaster
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duration: PT12M1S
duration ms: 721923
explicit: false
by artist: Franz Schubert
by artist: London Symphony Orchestra
by artist: Josef Krips
in album: Schubert: Symphony No. 9; Weber: Oberon Overture (2024 Remaster)
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  date published: 2024-05-24
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBF075810654
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075810654
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x4e0a33a3fd34cd86b4c3137eda0018de3f973eaf39088d5edd738e3b59e377af. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075810654 — a six-check JSON result.
  date published: 2026-07-31T23:30:38Z
audio: Symphony No. 9 in C Major, D. 944 "The Great": IV. Finale. Allegro vivace - 2024 Remaster
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Energy
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Oberon, J. 306: Overture - 2024 Remaster
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duration: PT8M53S
duration ms: 533018
explicit: false
by artist: Carl Maria von Weber
by artist: London Symphony Orchestra
by artist: Josef Krips
in album: Schubert: Symphony No. 9; Weber: Oberon Overture (2024 Remaster)
  type: MusicAlbum
  date published: 2024-05-24
genre: classical
genre: opera
isrc code: GBF075812450
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59685f14396244fb8b0034139838b5cbd07425406bfd77fe5583901dfcf7a7a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075812450 — a six-check JSON result.
  date published: 2026-07-08T03:53:27Z
audio: Oberon, J. 306: Overture - 2024 Remaster
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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Mozart: Symphonies Nos. 32, 34 & 33; Rehearsal for Symphony No. 33 (2024 Remaster)
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date published: 2024-05-24
track: Symphony No. 32 in G Major, K. 318: I. Allegro spiritoso - 2024 Remaster
  type: MusicRecording
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  by artist: Royal Concertgebouw Orchestra
  by artist: Josef Krips
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    type: MusicAlbum
    date published: 2024-05-24
  popularity: 3
  genre: classical
  genre: classical-era
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  genre: opera
  genre: chamber-music
  genre: concerto
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-31T00:26:26Z
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track: Symphony No. 32 in G Major, K. 318: II. Andante - 2024 Remaster
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  duration: PT2M36S
  duration ms: 156613
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  by artist: Wolfgang Amadeus Mozart
  by artist: Royal Concertgebouw Orchestra
  by artist: Josef Krips
  in album: Mozart: Symphonies Nos. 32, 34 & 33; Rehearsal for Symphony No. 33 (2024 Remaster)
    type: MusicAlbum
    date published: 2024-05-24
  popularity: 2
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: NLA507301120
  additional property: CopyrightID
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  additional property: CopyrightRegisteredAt
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507301120
  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xfb2e20a56f149592cda07f6575af959d003b33153c94d3b536653ee79c08a530. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507301120 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Symphony No. 32 in G Major, K. 318: II. Andante - 2024 Remaster
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track: Symphony No. 32 in G Major, K. 318: III. Tempo I - 2024 Remaster
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  by artist: Wolfgang Amadeus Mozart
  by artist: Royal Concertgebouw Orchestra
  by artist: Josef Krips
  in album: Mozart: Symphonies Nos. 32, 34 & 33; Rehearsal for Symphony No. 33 (2024 Remaster)
    type: MusicAlbum
    date published: 2024-05-24
  popularity: 2
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: NLA507301121
  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: Symphony No. 32 in G Major, K. 318: III. Tempo I - 2024 Remaster
track: Symphony No. 34 in C Major, K. 338: I. Allegro vivace - 2024 Remaster
track: Symphony No. 33 in B-Flat Major, K. 319: I. Allegro assai - 2024 Remaster

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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507301121

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:20:19Z

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 0x3be066b67fb7e8dec47305689fe6b47713e84e2f28c2197d3c3c238472345535. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507301121 — a six-check JSON result.
date published: 2026-07-08T03:20:19Z

Symphony No. 32 in G Major, K. 318: III. Tempo I - 2024 Remaster
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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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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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Symphony No. 34 in C Major, K. 338: I. Allegro vivace - 2024 Remaster
type: MusicRecording
duration: PT7M21S
duration ms: 441386
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Royal Concertgebouw Orchestra
by artist: Josef Krips
in album: Mozart: Symphonies Nos. 32, 34 & 33; Rehearsal for Symphony No. 33 (2024 Remaster)
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  date published: 2024-05-24
popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: NLA507300365
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x086a72d35a35ba425b21b60a3b43ad64acffdd39244d566dc586fbef9e502d83. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507300365 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Symphony No. 34 in C Major, K. 338: I. Allegro vivace - 2024 Remaster
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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Symphony No. 33 in B-Flat Major, K. 319: I. Allegro assai - 2024 Remaster
type: MusicRecording
duration: PT7M40S
duration ms: 460493
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Royal Concertgebouw Orchestra
by artist: Josef Krips
in album: Mozart: Symphonies Nos. 32, 34 & 33; Rehearsal for Symphony No. 33 (2024 Remaster)
  type: MusicAlbum
  date published: 2024-05-24
popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: NLA507300361
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xa50a72fe58ee4e84999b4d44c5e5b3d69b5e18e8dba8e942daf551bc45eee069. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507300361 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Symphony No. 33 in B-Flat Major, K. 319: I. Allegro assai - 2024 Remaster
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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Schubert: Symphonies Nos. 6 & 8; Rosamunde Overture (Remastered 2024)
type: MusicAlbum
date published: 2024-04-26

Opera Arias - Mozart, Puccini, Massenet, Bizet, Mussorgsky, Bellini, Gounod (Remastered 2024)
type: MusicAlbum
date published: 2024-04-26

Mozart: Symphonies Nos. 39 & 41; Overture, Le nozze di Figaro (Remastered by Andrew Hallifax 2024)
type: MusicAlbum
date published: 2024-04-26
track: Le nozze di Figaro, K. 492: Overture - Remastered by Andrew Hallifax 2024
  type: MusicRecording
  duration: PT4M15S
  duration ms: 255000
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: London Symphony Orchestra
  by artist: Josef Krips
  in album: Mozart: Symphonies Nos. 39 & 41; Overture, Le nozze di Figaro (Remastered by Andrew Hallifax 2024)
    type: MusicAlbum
    date published: 2024-04-26
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: GBF074910990
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x7f43ad5efdf88527f68f272af0bc827c63e129c6eff0792c638868a00d56f218. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF074910990 — a six-check JSON result.
    date published: 2026-07-31T23:30:38Z
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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Mozart: Overtures; Mozart, R. Strauss: Opera Arias (Remastered 2024)
type: MusicAlbum
date published: 2024-04-26
track: Die Zauberflöte, K. 620: Overture - Remastered 2024
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  duration ms: 465241
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  by artist: Wolfgang Amadeus Mozart
  by artist: London Symphony Orchestra
  by artist: Josef Krips
  in album: Mozart: Overtures; Mozart, R. Strauss: Opera Arias (Remastered 2024)
    type: MusicAlbum
    date published: 2024-04-26
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: GBF075110980
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0xd590f56fe1ca9f9b0d3945d2060cfe0ea4caea4d0b4ac2a89bfe9a50ad75ad25
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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: 2026-08-01T00:10:46Z
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Mozart: Die Entführung aus dem Serail; Turkish March; Opera Arias (Remastered 2024)
type: MusicAlbum
date published: 2024-04-26
track: Die Entführung aus dem Serail, K. 384: Ouvertüre - Remastered 2024
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  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Wiener Philharmoniker
  by artist: Josef Krips
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    date published: 2024-04-26
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
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  additional property: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5b4d1251c8d9f44332a7cbc9d6daee26dcaf19aa4201f5c653ee2456f48f68. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075040401 — a six-check JSON result.
    date published: 2026-07-31T17:29:52Z
  audio: Die Entführung aus dem Serail, K. 384: Ouvertüre - Remastered 2024
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    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Danceability
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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J. Strauss II: Waltzes (Remastered 2024)
type: MusicAlbum
date published: 2024-04-26
track: An der schönen blauen Donau, Waltz, Op. 314 - Remastered 2024
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  explicit: false
  by artist: Johann Strauss II
  by artist: National Symphony Orchestra
  by artist: Josef Krips
  in album: J. Strauss II: Waltzes (Remastered 2024)
    type: MusicAlbum
    date published: 2024-04-26
  isrc code: GBBBA4950273
  additional property: CopyrightID
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA4950273
  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x7adce6ab4d8574d965c3ffe90cb81c0ddcae93a216cf00da3bb22589a9052966. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA4950273 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: An der schönen blauen Donau, Waltz, Op. 314 - Remastered 2024
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
      type: PropertyValue
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    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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track: Kaiserwalzer, Op. 437 - Remastered 2024
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  duration: PT8M32S
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  explicit: false
  by artist: Johann Strauss II
  by artist: The New Symphony Orchestra Of London
  by artist: Josef Krips
  in album: J. Strauss II: Waltzes (Remastered 2024)
    type: MusicAlbum
    date published: 2024-04-26
  isrc code: GBBBA4950274
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x57837bd1a81021b8ef7300ad3a30854ed7c7ed3c9d49a81d22eafd9a3fb8b25d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA4950274 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Kaiserwalzer, Op. 437 - Remastered 2024
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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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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    additional property: Instrumentalness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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track: Accelerationen Walzer, Op. 234 - Remastered 2024
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  explicit: false
  by artist: Johann Strauss II
  by artist: The New Symphony Orchestra Of London
  by artist: Josef Krips
  in album: J. Strauss II: Waltzes (Remastered 2024)
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Accelerationen Walzer, Op. 234 - Remastered 2024
track: Rosen aus dem Süden, Op. 388 - Remastered 2024
track: Tritsch-Tratsch-Polka, Op. 214 - Remastered 2024
track: Piefke und Pufke Polka, Op. 235 - Remastered 2024

OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA4950271

OTSTimestamp
type: PropertyValue
value: 2026-07-31T05:48:18Z

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 0x267807c03865de6ac21d8253ab9082da0ce63b947e79d819debddbca90b9d402. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA4950271 — a six-check JSON result.
date published: 2026-07-31T05:48:18Z

Accelerationen Walzer, Op. 234 - Remastered 2024
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
  type: PropertyValue
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additional property: Danceability
  type: PropertyValue
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Rosen aus dem Süden, Op. 388 - Remastered 2024
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duration: PT8M24S
duration ms: 504583
explicit: false
by artist: Johann Strauss II
by artist: The New Symphony Orchestra Of London
by artist: Josef Krips
in album: J. Strauss II: Waltzes (Remastered 2024)
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  date published: 2024-04-26
isrc code: GBBBA4950272
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xcffc31072aceebbd0fb0d5034696ce500aa4c7f9f5d61b91d2383511ea87ae19. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA4950272 — a six-check JSON result.
  date published: 2026-07-31T12:24:41Z
audio: Rosen aus dem Süden, Op. 388 - Remastered 2024
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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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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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Mode Name
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Tritsch-Tratsch-Polka, Op. 214 - Remastered 2024
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duration: PT2M36S
duration ms: 156333
explicit: false
by artist: Johann Strauss II
by artist: London Symphony Orchestra
by artist: Josef Krips
in album: J. Strauss II: Waltzes (Remastered 2024)
  type: MusicAlbum
  date published: 2024-04-26
isrc code: GBF075010790
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075010790
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xabed951878ca06efd427775e9e27f058d2dc3703961280fe9265b9f1567b6e57. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075010790 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Tritsch-Tratsch-Polka, Op. 214 - Remastered 2024
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Piefke und Pufke Polka, Op. 235 - Remastered 2024
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duration: PT2M37S
duration ms: 157725
explicit: false
by artist: Johann Strauss I
by artist: London Symphony Orchestra
by artist: Josef Krips
in album: J. Strauss II: Waltzes (Remastered 2024)
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  date published: 2024-04-26
genre: classical
genre: early-romantic-era
isrc code: GBF075010800
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additional property: CopyrightStatus
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26bf708dd4fc932a6fd09158ade7d1d2e9575bb0b420282651f205677cbb78b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075010800 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Piefke und Pufke Polka, Op. 235 - Remastered 2024
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Haydn: Symphony No. 104; Weber: Euryanthe Overture (Remastered 2024)
type: MusicAlbum
date published: 2024-04-26

Schumann: Papillons; Arabeske; Piano Concerto (Wilhelm Kempff: Complete Decca Recordings, Vol. 5)
type: MusicAlbum
date published: 2022-05-13

Haydn: Symphony, No. 94, 95, 96 & 99
type: MusicAlbum
date published: 2020-01-01

Beethoven 6
type: MusicAlbum
date published: 2019-12-28

Beethoven 5
type: MusicAlbum
date published: 2019-12-28

Beethoven 4
type: MusicAlbum
date published: 2019-12-07

Violin Spectacular
type: MusicAlbum
date published: 2019-11-30
track: Souvenir de Moscou, Op. 6
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  by artist: Arthur Grumiaux
  by artist: Istvan Hajdu
  by artist: Josef Krips
  by artist: Philharmona Orchestra
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME1930288
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T16:07:24Z
  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
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da6661c43c0053006b7209947632cf50a4f53677a6b63b517a3734018b3d31b. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME1930288 — a six-check JSON result.
    date published: 2026-07-31T16:07:24Z
  audio: Souvenir de Moscou, Op. 6
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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: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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track: Les berceaux
  type: MusicRecording
  duration: PT2M52S
  duration ms: 172720
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  by artist: Gabriel Fauré
  by artist: Arthur Grumiaux
  by artist: Istvan Hajdu
  by artist: Josef Krips
  by artist: Philharmona Orchestra
  in album: Violin Spectacular
    type: MusicAlbum
    date published: 2019-11-30
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  additional property: CopyrightStatus
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xb452016bc2cd534363b6e3c3376e1157761fdac21cb419796557bf72c95136e9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME1930295 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Les berceaux
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: 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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    additional property: Instrumentalness
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Beethoven 2
type: MusicAlbum
date published: 2019-11-23

Mozart: Symphonies Nos. 31 & 35
type: MusicAlbum
date published: 2019-09-26

Memories Of Vienna
type: MusicAlbum
date published: 2019-09-13
track: Wiener Blut Waltz, Op. 354
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  by artist: London Symphony Orchestra
  by artist: Josef Krips
  in album: Memories Of Vienna
    type: MusicAlbum
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075010770
  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xffde51cbc093d522d1e8bd048a24df870668d97de2a62022449ad93a94000ec0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075010770 — a six-check JSON result.
    date published: 2026-07-07T18:39:05Z
  audio: Wiener Blut Waltz, Op. 354
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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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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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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track: Piefke und Pufke Polka, Op. 235
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  by artist: London Symphony Orchestra
  by artist: Josef Krips
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  genre: classical
  genre: early-romantic-era
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xa26bf708dd4fc932a6fd09158ade7d1d2e9575bb0b420282651f205677cbb78b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075010800 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Piefke und Pufke Polka, Op. 235
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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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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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
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    additional property: Key Name
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track: Accelerationen, Op. 234
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  by artist: Josef Krips
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  additional property: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Accelerationen, Op. 234
track: Kaiserwalzer, Op. 437
track: Rosen aus dem Süden, Op. 388
track: Voices Of Spring (Frühlingsstimmen), Op. 410

OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/960264

OTSVerificationAPI
type: PropertyValue
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OTSTimestamp
type: PropertyValue
value: 2026-07-30T14:36:16Z

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 0x9d7bd82e70642e5e1cd9af3e5059a23a6bbc9cd55e61f37ddee56eb9e0c07dd2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075710212 — a six-check JSON result.
date published: 2026-07-30T14:36:16Z

Accelerationen, Op. 234
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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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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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Kaiserwalzer, Op. 437
type: MusicRecording
duration: PT9M59S
duration ms: 599106
explicit: false
by artist: Johann Strauss II
by artist: Wiener Philharmoniker
by artist: Josef Krips
in album: Memories Of Vienna
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isrc code: GBF075710213
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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: 2026-07-30T12:51:24Z
audio: Kaiserwalzer, Op. 437
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Rosen aus dem Süden, Op. 388
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by artist: Wiener Philharmoniker
by artist: Josef Krips
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:51:48Z
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Voices Of Spring (Frühlingsstimmen), Op. 410
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by artist: Hilde Gueden
by artist: Wiener Philharmoniker
by artist: Josef Krips
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Mahler: Symphony No. 4 in G Major (Live)
type: MusicAlbum
date published: 2019-08-02

Mozart, Haydn, Schubert & Others: Orchestral Works
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Milestones of a Legend: Alfredo Campoli, Vol. 3
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date published: 2019-03-01

Milestones of a Legend: Isaac Stern, Vol. 5
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date published: 2018-12-07

Milestones of a Legend: The Cello Queen, Vol. 6
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date published: 2018-09-07

Tossy Spivakovsky Live: 8 Violin Concertos
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date published: 2018-06-01

Milestones of a Piano Legend: Sir Clifford Curzon, Vol. 8
type: MusicAlbum
date published: 2018-03-18

Beethoven: The Nine Symphonies No. 9
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date published: 2017-07-24
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T15:20:15Z
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Beethoven: The Nine Symphonies No. 7, No. 8
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Beethoven: The Nine Symphonies No. 5, No. 6
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Johann Strauss jr: Overtures, Waltzes and Polkas
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Beethoven the Nine Synphonies: No. 3, No. 4
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Brahms: Symphony No. 1 in C minor, Op. 68
type: MusicAlbum
date published: 2017-06-29

Beethoven: The Nine Symphonies No. 1, No. 2
type: MusicAlbum
date published: 2017-06-26

Mozart: Great Opera Overtures
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date published: 2017-03-09

Festival Johannes Brahms, Concert du 28/05/1959, Orchestre Radio Symphonique de la RTF, Josef Krips (dir), Arthur Rubinstein (piano)
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date published: 2016-11-22

Wiener Staatsoper Live: Gundula Janowitz
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date published: 2016-07-01

Schubert, Schumann, Brahms, Wolf, Strauss & Marx
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date published: 2016-07-01

Idomeneo, Così fan tutte, Iphigenie auf Tauris, Fidelio, Cenerentola, Faust, Hoffmanns Erzählungen, Verkaufte Braut, Jenufa & Rake's Progress
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date published: 2016-07-01

Christa Ludwig
type: MusicAlbum
date published: 2016-07-01

The Essentials: Verdi
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track: Aïda: Act II: Marcia (Triumphal March)
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T17:41:38Z
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track: Nabucco, Act III: Va, pensiero, "Chorus of Hebrew Slaves"
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  popularity: 2
  genre: classical
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T20:42:35Z
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track: Il trovatore, Act II: Vedi, le fosche notturne
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  genre: classical
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  subject of: OpenTimestamps Proof of Existence
  audio: Il trovatore, Act II: Vedi, le fosche notturne
track: Rigoletto: Act III: La donna e mobile

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Il trovatore, Act II: Vedi, le fosche notturne
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Rigoletto: Act III: La donna e mobile
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British Symphonies
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Operas and Operettas - Donizetti, G. / Lehar, F. / Kalman, E. / Boito, A. / Puccini, G. / Bellini, V. / Mozart, W.A. (Festival of the Primadonnas)
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Wagner: Die Meistersinger von Nürnberg
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Hilde Gueden Sings Operetta
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A To Z Of Conductors
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Mahler: Das Lied von der Erde
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