Quartetto Cassoviae
type: MusicGroup
genre: chamber music
popularity: 3
followers: 34
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 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. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-21T18:08:38Z
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album: Haydn: Sinfonie... Quartetto d'Archi... (Musica Classica - I Capolavori...)
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  date published: 2012-09-20
album: Dmitri Shostakovich, Sergei Rachmaninoff: Trio & Quartetti... (Musica Classica - I Capolavori...)
  type: MusicAlbum
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album: Dvorak / Haydn / Shostakovich: String Quartets
  type: MusicAlbum
  date published: 2000-01-01
album: Bambini: I bambini fanno ooh... (Viva la pappa col pomodoro)
  type: MusicAlbum
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  track: Whisky il ragnetto
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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
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:53:27Z
    audio: Whisky il ragnetto
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  track: La storia di Peter Pan
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    by artist: Quartetto Cassoviae
    by artist: Walter Peraro
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      date published: 2012-03-07
    genre: string-quartet
    genre: quartetto-d-archi
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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
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:22:41Z
    audio: La storia di Peter Pan
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album: The 50 Most Famous Chamber Music Works
album: Musique nocturne: Late Night Classical
album: Le 10 fiabe per bambini più belle di sempre
album: Dmitri Shostakovich: Essential Works
album: Classical Music Capitals of the World: Prague
album: Essential Works: Cello Masterpieces
album: The 50 Most Famous String Quartets
album: Underrated Classical: 3.5 Hours of the Greatest Classical Music You Should be Listening to, Volume 1

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Liveness
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Valence (Positivity)
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Loudness (dB)
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The 50 Most Famous Chamber Music Works
type: MusicAlbum
date published: 2021-10-08

Musique nocturne: Late Night Classical
type: MusicAlbum
date published: 2021-09-17

Le 10 fiabe per bambini più belle di sempre
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track: Cappuccetto rosso
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  by artist: Orchestra Accademia Magnifica Comunità
  by artist: Fabiano Ruin
  by artist: Gianpaolo Capuzzo
  by artist: Arrigo Pierobon
  by artist: Enrico Casazza
  by artist: Chiara de Ziller
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    type: MusicAlbum
    date published: 2014-03-09
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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: Cappuccetto rosso
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    additional property: Mode (Major/Minor)
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track: Biancaneve e i sette nani
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  by artist: Elena Bertuzzi
  by artist: Orchestra I Virtuosi Dell'ensemble Di Venezia
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    type: MusicAlbum
    date published: 2014-03-09
  popularity: 2
  isrc code: ITS040500754
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:39:04Z
  audio: Biancaneve e i sette nani
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track: Il gatto con gli stivali
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  by artist: Interpreti Veneziani
  by artist: Paolo Ciociola
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Il gatto con gli stivali
track: La storia di Robin Hood
track: I tre porcellini
track: Il mago di Oz
track: La storia di Peter Pan
track: Cenerentola

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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc7ee074be995047e8d6120dbdfce8674c949fe11cffb90fd5ecd447eb97f6f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITS040001691.
date published: 2026-07-08T03:22:41Z

Il gatto con gli stivali
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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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La storia di Robin Hood
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by artist: Orchestra Filarmonica Italiana
by artist: Walter Peraro
in album: Le 10 fiabe per bambini più belle di sempre
  type: MusicAlbum
  date published: 2014-03-09
popularity: 7
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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
subject of: OpenTimestamps Proof of Existence
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I tre porcellini
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Il mago di Oz
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La storia di Peter Pan
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Cenerentola
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Dmitri Shostakovich: Essential Works
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Classical Music Capitals of the World: Prague
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Essential Works: Cello Masterpieces
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The 50 Most Famous String Quartets
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Underrated Classical: 3.5 Hours of the Greatest Classical Music You Should be Listening to, Volume 1
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