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description: Alexander Alexandrovich Kopylov or KopilovClassical Net - Composer Data - Statistics & Birthday List at www.classical.net (Александр Александрович Копылов, 14 July 1854 – 20 February 1911) was a compo
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followers: 173
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  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 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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album: Händel Alcina Opera - Suite for Strings
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album: Respighi Ancient Dances and Arias 3 Op. 40 1-4
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album: Respighi Ancient Dances and Arias 2 Op. 40 1-4
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album: Respighi Ancient Dances and Arias 1 Op. 40 1-4
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  by artist: Alexander Kopylov
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-06T06:56:49Z
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track: Pavane For A Dead Princess
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    date published: 2026-07-07T18:39:05Z
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track: Cipollino, Act I Scene 1: Everybody's Dance
track: Cipollino, Act I Scene 1: Cipollino's Entrance and Dance
track: Cipollino, Act I Scene 1: Pumpkin's Dance
track: Cipollino, Act I Scene 1: The Policemen and Tomato's Dance

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Cipollino, Act I Scene 1: Everybody's Dance
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by artist: Alexander Kopylov
by artist: Bolshoi Theatre Orchestra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
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Cipollino, Act I Scene 1: Cipollino's Entrance and Dance
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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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Cipollino, Act I Scene 1: Pumpkin's Dance
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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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Cipollino, Act I Scene 1: The Policemen and Tomato's Dance
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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 0xb35f0d6b490991b9cc15fce719983e1a838bb55ed51de74bf5173516d1df265b. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/UK2Y21303248.
  date published: 2026-07-30T07:28:30Z
audio: Cipollino, Act I Scene 1: The Policemen and Tomato's Dance
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.704
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.509
  additional property: Energy
    type: PropertyValue
    value: 0.967
  additional property: Speechiness
    type: PropertyValue
    value: 0.173
  additional property: Acousticness
    type: PropertyValue
    value: 0.793
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.917
  additional property: Liveness
    type: PropertyValue
    value: 0.639
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.34
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.497
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor