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description: thumb|upright=1.25|Welser-Möst conducting the New York Philharmonic (27 February 2020) Franz Leopold Maria Möst (born 16 August 1960), known professionally as Franz Welser-Möst, is an Austrian conduc
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  track: Tristan: I. Prologue
  track: Symphony No. 10: Adagio (Arr. for Solo Piano by Ronald Stevenson)
  track: Tristan: II. Lament
  track: Transcendental Études, S.139: XI. Harmonies du soir
  track: Tristan: III. Preludes and Variations
album: Einem: Philadelphia Symphonie, Geistliche Sonate & Stundenlied (Live)
album: Johan Botha: Wiener Staatsoper Live (1997-2014)
album: The Peace Concert Versailles (Live at Versailles / 2018)
album: Stravinsky: Le Rossignol, Oedipus Rex & Renard
album: Walker: Antifonys, Lilacs, Sinfonias Nos 4 & 5
album: Wiener Opernfest 2005
album: Bruch & Mendelssohn: Scottish Fantasy
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track: Weber: Variations on a Theme from Silvana in B Minor, Op. 33, J. 128: Thema (Arr. Schottstädt for Clarinet and Orchestra)
track: Weber: Variations on a Theme from Silvana in B Minor, Op. 33, J. 128: Variation II (Arr. Schottstädt for Clarinet and Orchestra)
track: Mozart: Divertimento No. 17 in D Major, K. 334/320b: III. Menuetto - Trio
track: Requiem in D Minor, K. 626: III. Sequenz, Lacrimosa dies illa
track: Mass No. 19 in D Minor, K. 626, "Requiem": VII. Lacrimosa
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track: An der schönen blauen Donau, Op. 314

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Tristan: I. Prologue
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Symphony No. 10: Adagio (Arr. for Solo Piano by Ronald Stevenson)
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Tristan: II. Lament
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Transcendental Études, S.139: XI. Harmonies du soir
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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
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  date published: 2026-06-13T12:53:06Z
audio: Transcendental Études, S.139: XI. Harmonies du soir
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by artist: Igor Levit
by artist: Franz Welser-Möst
by artist: Gewandhausorchester
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popularity: 2
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additional property: CopyrightStatus
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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 0x4bc27fd17e506f22d5dbc180c13c703f03a8243afa93d2deb2bb016be1a56475. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USSM12202670 — a six-check JSON result.
  date published: 2026-07-31T08:26:41Z
audio: Tristan: III. Preludes and Variations
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Einem: Philadelphia Symphonie, Geistliche Sonate & Stundenlied (Live)
type: MusicAlbum
date published: 2018-02-16

Johan Botha: Wiener Staatsoper Live (1997-2014)
type: MusicAlbum
date published: 2017-04-07

The Peace Concert Versailles (Live at Versailles / 2018)
type: MusicAlbum
date published: 2019-11-15
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  by artist: Wolfgang Amadeus Mozart
  by artist: Wiener Philharmoniker
  by artist: Franz Welser-Möst
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    type: MusicAlbum
    date published: 2019-11-15
  popularity: 1
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
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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/DEN961803150
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T21:25:57Z
  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 0x924aaead7f5d55d3975806d9a27959af1b1e4e2f8337d9b66f89e332ca1f1553. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEN961803150 — a six-check JSON result.
    date published: 2026-07-31T21:25:57Z
  audio: Die Zauberflöte, K. 620: Overture - Live at Versailles / 2018
    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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track: Nocturnes, L. 91 / III. Sirènes: Un peu plus lent - Live at Versailles / 2018
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  duration: PT1M6S
  duration ms: 66546
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  by artist: Choeur de Radio France
  by artist: Wiener Philharmoniker
  by artist: Franz Welser-Möst
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    type: MusicAlbum
    date published: 2019-11-15
  popularity: 1
  genre: classical
  genre: impressionism
  genre: post-romantic-era
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961803162
  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 0x0fee4280675d899cf774209b1b90a6f77b5eb6a3005481f36733faf999452769. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961803162 — a six-check JSON result.
    date published: 2026-07-31T13:04:34Z
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track: The Planets, Op. 32: I. Mars, the Bringer of War - Live at Versailles / 2018
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    date published: 2019-11-15
  popularity: 2
  genre: classical
  genre: orchestra
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  additional property: CopyrightID
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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: The Planets, Op. 32: I. Mars, the Bringer of War - Live at Versailles / 2018

CopyrightID
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CopyrightStatus
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CopyrightRegisteredAt
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CopyrightChainExplorerURL
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OTSHash
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OTSBitcoinBlock
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value: 960418

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960418

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961803170

OTSTimestamp
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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 0x29fa1dd6701d722007432f988477690d0047ae7d4570319133108ac79c4fff9a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEN961803170 — a six-check JSON result.
date published: 2026-07-31T15:20:15Z

The Planets, Op. 32: I. Mars, the Bringer of War - Live at Versailles / 2018
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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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Stravinsky: Le Rossignol, Oedipus Rex & Renard
type: MusicAlbum
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Walker: Antifonys, Lilacs, Sinfonias Nos 4 & 5
type: MusicAlbum
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Wiener Opernfest 2005
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Bruch & Mendelssohn: Scottish Fantasy
type: MusicAlbum
date published: 2011-05-20
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  by artist: Herbert von Karajan
  by artist: Berliner Philharmoniker
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    date published: 2011-05-20
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  genre: classical
  genre: early-romantic-era
  genre: german-romanticism
  genre: classical-piano
  genre: choral
  genre: chamber-music
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  additional property: OTSBitcoinBlock
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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: 2026-07-08T03:20:19Z
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    additional property: Danceability
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  additional property: OTSVerificationAPI
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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Mozart / Compl. Beyer: Requiem in D Minor, K. 626: VIII. Lacrimosa
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duration: PT2M57S
duration ms: 177906
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by artist: Wolfgang Amadeus Mozart
by artist: Franz Welser-Möst
by artist: London Philharmonic Choir
by artist: London Philharmonic Orchestra
in album: 50 Best Classics
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popularity: 24
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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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: 2026-06-13T13:32:09Z
audio: Mozart / Compl. Beyer: Requiem in D Minor, K. 626: VIII. Lacrimosa
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Requiem in D Minor, K. 626: III. Sequenz No. 6, Lacrimosa
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duration: PT2M58S
duration ms: 178066
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by artist: London Philharmonic Choir
by artist: Franz Welser-Möst
by artist: London Philharmonic Orchestra
by artist: David Bell
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popularity: 22
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
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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: 2026-06-13T13:32:09Z
audio: Requiem in D Minor, K. 626: III. Sequenz No. 6, Lacrimosa
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Weber: Variations on a Theme from Silvana in B Minor, Op. 33, J. 128: Thema (Arr. Schottstädt for Clarinet and Orchestra)
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duration: PT1M43S
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by artist: Carl Maria von Weber
by artist: Sabine Meyer
by artist: Orchester der Oper Zürich
by artist: Franz Welser-Möst
in album: Deutsche Klarinette. Brahms, Mendelssohn, Beethoven, Weber...
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popularity: 16
genre: classical
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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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  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: 2026-07-08T03:22:41Z
audio: Weber: Variations on a Theme from Silvana in B Minor, Op. 33, J. 128: Thema (Arr. Schottstädt for Clarinet and Orchestra)
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Weber: Variations on a Theme from Silvana in B Minor, Op. 33, J. 128: Variation II (Arr. Schottstädt for Clarinet and Orchestra)
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duration: PT0M44S
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by artist: Sabine Meyer
by artist: Orchester der Oper Zürich
by artist: Franz Welser-Möst
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popularity: 9
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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: 2026-07-08T03:22:41Z
audio: Weber: Variations on a Theme from Silvana in B Minor, Op. 33, J. 128: Variation II (Arr. Schottstädt for Clarinet and Orchestra)
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Mozart: Divertimento No. 17 in D Major, K. 334/320b: III. Menuetto - Trio
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duration: PT4M26S
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by artist: Franz Welser-Möst
by artist: Stockholm Chamber Orchestra
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popularity: 6
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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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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  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: 2026-07-07T18:39:05Z
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Requiem in D Minor, K. 626: III. Sequenz, Lacrimosa dies illa
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duration: PT2M58S
duration ms: 178066
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by artist: London Philharmonic Orchestra
by artist: London Philharmonic Choir
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popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
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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: 2026-07-08T03:20:19Z
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Mass No. 19 in D Minor, K. 626, "Requiem": VII. Lacrimosa
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duration ms: 175350
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popularity: 4
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Requiem in D Minor, K. 626: III. Sequenz, No. 6, Lacrimosa
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by artist: Franz Welser-Möst
by artist: London Philharmonic Orchestra
by artist: London Philharmonic Choir
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popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:39:05Z
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Symphony No. 4 in A Major, Op. 90 'Italian': III. Con moto moderato
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duration: PT6M33S
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by artist: Felix Mendelssohn
by artist: Franz Welser-Möst
by artist: London Philharmonic Orchestra
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  date published: 2016-11-25
popularity: 4
genre: classical
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genre: german-romanticism
genre: classical-piano
genre: choral
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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: 2026-07-31T02:51:48Z
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An der schönen blauen Donau, Op. 314
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duration: PT9M40S
duration ms: 580693
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by artist: Franz Welser-Möst
by artist: London Philharmonic Orchestra
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popularity: 3
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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: 2026-07-08T03:20:19Z
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