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genre: classical
genre: opera
description: Walter Weller (30 November 1939 – 14 June 2015) was an Austrian-born conductor and classical violinist. He made several recordings over the years, founded his own string quartet, and led or co-led sev
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Adagio for Violin & Orchestra in E major, K.261
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Rondo for Violin and Orchestra in C, K.373
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Violin Concerto in E-Flat Major (Formerly Attrib. Mozart as K. 268): 1. Allegro moderato
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Symphony No. 1 in D, Op. 25 "Classical Symphony": 4. Finale (Vivace)
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Scythian Suite, Op. 20 - "Ala and Lolly": 2. The Evil God And Dance Of The Pagan Monsters
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The Love for Three Oranges, Symphonic Suite, Op. 33 bis: 3. March
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Martinů: Violin Concerto No. 2 & Symphony No. 1
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Brahms: Haydn Variations & Piano Concerto No. 1
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Martinu: Symphony No. 4 & Concertos
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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
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08402a8a0be1fdd62324b8e34012eae9d1c498e82da7558e7a8e9e99b9fde941. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0802515.
    date published: 2026-07-31T15:59:18Z
  audio: Martinu: Symphony No. 4, H. 305: II. Allegro vivo - Moderato - Allegro vivo
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    additional property: Danceability
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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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track: Martinu: Symphony No. 4, H. 305: III. Largo
  type: MusicRecording
  duration: PT10M55S
  duration ms: 655493
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  by artist: Bohuslav Martinů
  by artist: Walter Weller/Royal Liverpool Philharmonic Orchestra
  by artist: Walter Weller
  by artist: Royal Liverpool Philharmonic Orchestra
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    date published: 2009-02-23
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  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Martinu: Symphony No. 4, H. 305: III. Largo

OTSHash
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OTSBitcoinBlock
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value: 960397

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960397

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0802516

OTSTimestamp
type: PropertyValue
value: 2026-07-31T12:24:41Z

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 0xdf13cdefaf3864b89e76616aa3cbdb6033ed71f397b952735273cd38069a2e08. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0802516.
date published: 2026-07-31T12:24:41Z

Martinu: Symphony No. 4, H. 305: III. Largo
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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Strauss: Burleske & Ein Heldenleben
type: MusicAlbum
date published: 2008-11-24
track: Burleske for Piano and Orchestra in D Minor, TFV 145, Op. 85
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  duration: PT21M9S
  duration ms: 1269466
  explicit: false
  by artist: Richard Strauss
  by artist: Plamena Mangova
  by artist: National Orchestra of Belgium
  by artist: Walter Weller
  in album: Strauss: Burleske & Ein Heldenleben
    type: MusicAlbum
    date published: 2008-11-24
  genre: classical
  genre: opera
  genre: orchestra
  isrc code: BER180854601
  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
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BER180854601
  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 0x6da09d08b8c17abfdc6a43aea8c2057a69f7416a4514c6bee05de72937ce634c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BER180854601.
    date published: 2026-07-08T03:20:19Z
  audio: Burleske for Piano and Orchestra in D Minor, TFV 145, Op. 85
    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: Speechiness
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    additional property: Acousticness
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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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Martinu: Symphony No. 4, Estampes & Le Départ
type: MusicAlbum
date published: 2008-11-24

Glazunov: Piano Concerto No. 1, Op. 92 & Symphony No. 5, Op. 55
type: MusicAlbum
date published: 2006

Great Operatic Arias, Vol. 10
type: MusicAlbum
date published: 2003-03-01
track: Ruggiero's Aria (Verdi prati) from Alcina
  type: MusicRecording
  duration: PT4M18S
  duration ms: 258346
  explicit: false
  by artist: George Frideric Handel
  by artist: Walter Weller
  by artist: London Philharmonic Orchestra
  by artist: Diana Montague
  in album: Great Operatic Arias, Vol. 10
    type: MusicAlbum
    date published: 2003-03-01
  genre: classical
  genre: opera
  genre: early-music
  genre: baroque
  genre: english-baroque
  genre: german-baroque
  genre: choral
  isrc code: GBLWD0303705
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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
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD0303705
  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 0x3580df44f57fde819fa23c4ce9da87ce1c9afcf9aeb78955b632b39003c30212. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD0303705.
    date published: 2026-07-08T03:20:19Z
  audio: Ruggiero's Aria (Verdi prati) from Alcina
    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)
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track: Fiordiligi, Dorabella and Don Alfonso's Trio (Soave sia il vento) from Così fan tutte
  type: MusicRecording
  duration: PT3M33S
  duration ms: 213866
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Walter Weller
  by artist: London Philharmonic Orchestra
  by artist: Diana Montague
  by artist: Orla Boylan
  by artist: Alan Opie
  in album: Great Operatic Arias, Vol. 10
    type: MusicAlbum
    date published: 2003-03-01
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: GBLWD0303707
  additional property: CopyrightID
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953513
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD0303707
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T12:47:07Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66c70b24e5f46a97a61553608028098f729e2975ba2c23fb713076978a27a12. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD0303707.
    date published: 2026-06-13T12:47:07Z
  audio: Fiordiligi, Dorabella and Don Alfonso's Trio (Soave sia il vento) from Così fan tutte
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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: 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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Bruce Ford sings Viennese Operetta
type: MusicAlbum
date published: 2002-11-01

The Art of Vladimir Orloff
type: MusicAlbum
date published: 1998

Dvorak: Symphonies Nos. 7 & 8
type: MusicAlbum
date published: 1996

Mendelssohn: Symphony No. 1, Symphony No. 5 & The Hebrides
type: MusicAlbum
date published: 1992-10-01

Mendelssohn: Symphonies
type: MusicAlbum
date published: 1992-10-01

Mendlessohn: "A Midsummer Night's Dream" Complete Incidental Music
type: MusicAlbum
date published: 1992-07-01
track: Incidental Music to "A Midsummer Night's Dream", Op.61: I. Overture Op.21
  type: MusicRecording
  duration: PT12M0S
  duration ms: 720000
  explicit: false
  by artist: Felix Mendelssohn
  by artist: Walter Weller
  by artist: Royal Scottish Orchestra
  in album: Mendlessohn: "A Midsummer Night's Dream" Complete Incidental Music
    type: MusicAlbum
    date published: 1992-07-01
  genre: classical
  genre: early-romantic-era
  genre: german-romanticism
  genre: classical-piano
  genre: choral
  genre: chamber-music
  isrc code: GBVVQ1200094
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x185f6762181e8033e314569577c4b1d6e8f8bbcacdf3ef6f060e709a4b482ce7
  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/GBVVQ1200094
  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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185f6762181e8033e314569577c4b1d6e8f8bbcacdf3ef6f060e709a4b482ce7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBVVQ1200094.
    date published: 2026-07-31T16:07:24Z
  audio: Incidental Music to "A Midsummer Night's Dream", Op.61: I. Overture Op.21
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    additional property: Tempo (BPM)
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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: Liveness
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    additional property: Valence (Positivity)
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track: Incidental Music to "A Midsummer Night's Dream", Op.61: II. I. Scherzo After Act 1
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  duration: PT4M57S
  duration ms: 297000
  explicit: false
  by artist: Felix Mendelssohn
  by artist: Walter Weller
  by artist: Royal Scottish Orchestra
  in album: Mendlessohn: "A Midsummer Night's Dream" Complete Incidental Music
    type: MusicAlbum
    date published: 1992-07-01
  genre: classical
  genre: early-romantic-era
  genre: german-romanticism
  genre: classical-piano
  genre: choral
  genre: chamber-music
  isrc code: GBVVQ1200095
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBVVQ1200095
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7776d3f230664f47a03e0300bde6eaa090cfdf0ead5a14f6bd5bf4f273b154. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBVVQ1200095.
    date published: 2026-07-02T03:30:09Z
  audio: Incidental Music to "A Midsummer Night's Dream", Op.61: II. I. Scherzo After Act 1
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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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      type: PropertyValue
      value: -34.337
    additional property: Key Name
      type: PropertyValue
      value: G
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track: Incidental Music to "A Midsummer Night's Dream", Op.61: VI. V. Nocturne andante tranquillo
  type: MusicRecording
  duration: PT6M40S
  duration ms: 400000
  explicit: false
  by artist: Felix Mendelssohn
  by artist: Walter Weller
  by artist: Royal Scottish Orchestra
  in album: Mendlessohn: "A Midsummer Night's Dream" Complete Incidental Music
    type: MusicAlbum
    date published: 1992-07-01
  genre: classical
  genre: early-romantic-era
  genre: german-romanticism
  genre: classical-piano
  genre: choral
  genre: chamber-music
  isrc code: GBVVQ1200099
  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: Incidental Music to "A Midsummer Night's Dream", Op.61: VI. V. Nocturne andante tranquillo
track: Ruy Blas, Op. 95: Overture

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CopyrightRegisteredAt
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CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x2ffd55ee66e1332342519e7ec6a0fed733c09d4f7f5406047ff733bb09ba10da

OTSHash
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OTSBitcoinBlock
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value: 960448

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960448

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBVVQ1200099

OTSTimestamp
type: PropertyValue
value: 2026-07-31T18:48:12Z

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 0x2ffd55ee66e1332342519e7ec6a0fed733c09d4f7f5406047ff733bb09ba10da. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBVVQ1200099.
date published: 2026-07-31T18:48:12Z

Incidental Music to "A Midsummer Night's Dream", Op.61: VI. V. Nocturne andante tranquillo
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: 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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Ruy Blas, Op. 95: Overture
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duration: PT7M26S
duration ms: 446000
explicit: false
by artist: Felix Mendelssohn
by artist: Walter Weller
by artist: Royal Scottish Orchestra
in album: Mendlessohn: "A Midsummer Night's Dream" Complete Incidental Music
  type: MusicAlbum
  date published: 1992-07-01
genre: classical
genre: early-romantic-era
genre: german-romanticism
genre: classical-piano
genre: choral
genre: chamber-music
isrc code: GBVVQ1200105
additional property: CopyrightID
additional property: CopyrightStatus
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  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T13:49:54+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBVVQ1200105
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6937877ef885a4a0eb34f59a1f0f49fcc5372c04e6c4f69401219ef156e0e815. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBVVQ1200105.
  date published: 2026-07-02T03:30:09Z
audio: Ruy Blas, Op. 95: Overture
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 141.433
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.292
  additional property: Energy
    type: PropertyValue
    value: 0.164
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.968
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.68
  additional property: Liveness
    type: PropertyValue
    value: 0.049
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.096
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.637
  additional property: Key Name
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  additional property: Mode Name
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Mendelssohn: Symphony No. 3 "Scottish" & Symphony No. 4 "Italian"
type: MusicAlbum
date published: 1992-03-01

The Chandos Sound Experience
type: MusicAlbum
date published: 1991-10-01

Mendelssohn: Symphony No. 2, Op. 52 "Lobgesang"
type: MusicAlbum
date published: 1991-10-01

Beethoven: Violin Concerto in D Major, Prometheus Overture & Coriolan Overture
type: MusicAlbum
date published: 1991-02-01

Prokofiev: The Symphonies, etc.
type: MusicAlbum
date published: 1991-01-01
track: Symphony No. 1 in D, Op. 25 "Classical Symphony": 1. Allegro
  type: MusicRecording
  duration: PT4M11S
  duration ms: 251160
  explicit: false
  by artist: Sergei Prokofiev
  by artist: London Symphony Orchestra
  by artist: Walter Weller
  in album: Prokofiev: The Symphonies, etc.
    type: MusicAlbum
    date published: 1991-01-01
  genre: classical
  genre: orchestra
  genre: neoclassical
  isrc code: GBF077411051
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T11:34:15+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe740cd67c246c45e2f29635d699ab03090fe408e8edafa44cf68e63ddbde7c84
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960403
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960403
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077411051
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T13:04:34Z
  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 0xe740cd67c246c45e2f29635d699ab03090fe408e8edafa44cf68e63ddbde7c84. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077411051.
    date published: 2026-07-31T13:04:34Z
  audio: Symphony No. 1 in D, Op. 25 "Classical Symphony": 1. Allegro
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 117.226
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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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
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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
      type: PropertyValue
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track: Symphony No. 1 in D, Op. 25 "Classical Symphony": 2. Larghetto
  type: MusicRecording
  duration: PT4M20S
  duration ms: 260600
  explicit: false
  by artist: Sergei Prokofiev
  by artist: London Symphony Orchestra
  by artist: Walter Weller
  in album: Prokofiev: The Symphonies, etc.
    type: MusicAlbum
    date published: 1991-01-01
  genre: classical
  genre: orchestra
  genre: neoclassical
  isrc code: GBF077411052
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T20:27:24+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc2fb54c7d8c7d2e683963872058e09a06c6090428fa1fd4559a6ee3383b6b640
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960463
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960463
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077411052
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T20:42:35Z
  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 0xc2fb54c7d8c7d2e683963872058e09a06c6090428fa1fd4559a6ee3383b6b640. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077411052.
    date published: 2026-07-31T20:42:35Z
  audio: Symphony No. 1 in D, Op. 25 "Classical Symphony": 2. Larghetto
    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)
      type: PropertyValue
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.345
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.884
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.667
    additional property: Liveness
      type: PropertyValue
      value: 0.116
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.081
    additional property: Loudness (dB)
      type: PropertyValue
      value: -31.421
    additional property: Key Name
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track: Scythian Suite, Op. 20 - "Ala and Lolly": 1. Invocation To Veles And Ala
  type: MusicRecording
  duration: PT6M29S
  duration ms: 389666
  explicit: false
  by artist: Sergei Prokofiev
  by artist: London Philharmonic Orchestra
  by artist: Walter Weller
  in album: Prokofiev: The Symphonies, etc.
    type: MusicAlbum
    date published: 1991-01-01
  genre: classical
  genre: orchestra
  genre: neoclassical
  isrc code: GBF077711031
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Scythian Suite, Op. 20 - "Ala and Lolly": 1. Invocation To Veles And Ala
track: Scythian Suite, Op. 20 - "Ala and Lolly": 2. The Evil God And Dance Of The Pagan Monsters
track: Symphony No. 5 in B flat, Op. 100: 1. Andante
track: Symphony No. 5 in B flat, Op. 100: 2. Allegro marcato

CopyrightRegisteredAt
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value: 2026-08-01T01:04:16+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xcf51f90f71e4c1b67dc0362f7847775d5bc4aa8219a877ad73ac571e5908d692

OTSHash
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OTSBitcoinBlock
type: PropertyValue
value: 960494

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960494

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077711031

OTSTimestamp
type: PropertyValue
value: 2026-08-01T01:44:32Z

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 0xcf51f90f71e4c1b67dc0362f7847775d5bc4aa8219a877ad73ac571e5908d692. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077711031.
date published: 2026-08-01T01:44:32Z

Scythian Suite, Op. 20 - "Ala and Lolly": 1. Invocation To Veles And Ala
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 107.544
additional property: Musical Key
  type: PropertyValue
  value: 2
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.089
additional property: Energy
  type: PropertyValue
  value: 0.066
additional property: Speechiness
  type: PropertyValue
  value: 0.034
additional property: Acousticness
  type: PropertyValue
  value: 0.871
additional property: Instrumentalness
  type: PropertyValue
  value: 0.789
additional property: Liveness
  type: PropertyValue
  value: 0.322
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.052
additional property: Loudness (dB)
  type: PropertyValue
  value: -23.662
additional property: Key Name
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  value: D
additional property: Mode Name
  type: PropertyValue
  value: Minor

Scythian Suite, Op. 20 - "Ala and Lolly": 2. The Evil God And Dance Of The Pagan Monsters
type: MusicRecording
duration: PT2M39S
duration ms: 159866
explicit: false
by artist: Sergei Prokofiev
by artist: London Philharmonic Orchestra
by artist: Walter Weller
in album: Prokofiev: The Symphonies, etc.
  type: MusicAlbum
  date published: 1991-01-01
genre: classical
genre: orchestra
genre: neoclassical
isrc code: GBF077711032
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T16:51:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe1362849ad0e8c092b36d6e5696186c7671966510b7d1748c4e428c030f8383d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077711032
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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audio: Scythian Suite, Op. 20 - "Ala and Lolly": 2. The Evil God And Dance Of The Pagan Monsters
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Symphony No. 5 in B flat, Op. 100: 1. Andante
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Symphony No. 5 in B flat, Op. 100: 1. Andante
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Symphony No. 5 in B flat, Op. 100: 2. Allegro marcato
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T00:40:43Z
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Beethoven: Piano Concertos Nos. 1-5
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T15:59:18Z
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Beethoven: Symphony No. 9
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Beethoven: Symphony No. 6 "Pastoral" & Symphony No. 8
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Beethoven: Symphony No. 4 & Symphony No. 7
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Beethoven: Symphony No. 2 & Symphony No. 5
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Beethoven: Symphony No. 1 & Symphony No. 3 "Eroica"
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Beethoven: Piano Concerto No. 5, Overture to The Creatures of Prometheus, Overture to Coriolan & Overture to Leonora No. 3
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Beethoven: Piano Concerto No. 5, Overture to The Creatures of Prometheus & Symphony No. 5
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T17:29:52Z
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Beethoven: Complete Symphonies
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Beethoven: Symphony No. 10 & Triple Concerto in C Major
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date published: 1988-09-01

An Introduction to Felix Mendelssohn
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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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  subject of: OpenTimestamps Proof of Existence
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  by artist: Howard Shelley
  by artist: London Mozart Players
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  genre: classical
  genre: early-romantic-era
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  genre: classical-piano
  genre: choral
  genre: chamber-music
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  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Piano Concerto No. 1 in G Minor, Op. 25: III. Presto - Molto allegro e vivace
track: Capriccio Brillant in B Minor, Op. 22, MWV O8

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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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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
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date published: 2026-07-30T14:36:16Z

Piano Concerto No. 1 in G Minor, Op. 25: III. Presto - Molto allegro e vivace
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Capriccio Brillant in B Minor, Op. 22, MWV O8
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by artist: Howard Shelley
by artist: London Mozart Players
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genre: classical
genre: early-romantic-era
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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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  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
audio: Capriccio Brillant in B Minor, Op. 22, MWV O8
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Fritz Wunderlich – Immortal Beloved
type: MusicAlbum
date published: 1977-01-01
track: 4 Lieder, Op. 27, TrV 170: 4. Morgen!
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  by artist: Fritz Wunderlich
  by artist: Bavarian Radio Symphony Orchestra
  by artist: Jan Koetsier
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  genre: classical
  genre: opera
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  additional property: CopyrightID
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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: 2026-07-30T22:27:30Z
  audio: 4 Lieder, Op. 27, TrV 170: 4. Morgen!
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Fritz Wunderlich - Beethoven / Haydn / Strauss, R.
type: MusicAlbum
date published: 1977-01-01
track: An die ferne Geliebte, Op. 98: 1. Auf dem Hügel sitz ich spähend
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  by artist: Heinrich Schmidt
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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
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    date published: 2026-07-30T08:30:10Z
  audio: An die ferne Geliebte, Op. 98: 1. Auf dem Hügel sitz ich spähend
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track: An die ferne Geliebte, Op. 98: 2. Wo die Berge so blau
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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: 2026-07-30T14:44:50Z
  audio: An die ferne Geliebte, Op. 98: 2. Wo die Berge so blau
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    additional property: Acousticness
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track: An die ferne Geliebte, Op. 98: 3. Leichte Segler in den Höhen
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  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: An die ferne Geliebte, Op. 98: 3. Leichte Segler in den Höhen
track: An die ferne Geliebte, Op. 98: 4. Diese Wolken in den Höhen
track: An die ferne Geliebte, Op. 98: 5. Es kehret der Maien, es blühet die Au
track: An die ferne Geliebte, Op. 98: 6. Nimm sie hin denn diese Lieder
track: 4 Lieder, Op. 27, TrV 170: 4. Morgen!

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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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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
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date published: 2026-07-08T03:20:19Z

An die ferne Geliebte, Op. 98: 3. Leichte Segler in den Höhen
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audio: An die ferne Geliebte, Op. 98: 4. Diese Wolken in den Höhen
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An die ferne Geliebte, Op. 98: 5. Es kehret der Maien, es blühet die Au
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An die ferne Geliebte, Op. 98: 6. Nimm sie hin denn diese Lieder
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4 Lieder, Op. 27, TrV 170: 4. Morgen!
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subject of: OpenTimestamps Proof of Existence
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Pilar Lorengar: Prima Donna in Vienna
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date published: 1972-01-01

Shostakovich: Symphonies Nos.1 & 9; The Age of Gold
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date published: 2006-01-01

Prokofiev: Peter and the Wolf; Symphony No.1; Lieutenant Kijé Suite; The Love for Three Oranges Suite
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date published: 1991-10-04

Franck: Symphony in D Minor, Variations Symphoniques – Bartók: Rhapsody
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date published: 1977-01-01