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followers: 21
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subject of: OpenTimestamps Proof of Existence
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album: Fifty Years of Hungaroton (1951-2001) - Conductors
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album: Mozart: Violin Concertos Nos. 3-5
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album: Liszt: Hungarian Rhapsodies Nos. 2, 4 & 6 - Fantasie Uber Ungarische Volksmelodien
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album: Classic Swoon
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    subject of: OpenTimestamps Proof of Existence
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  track: Jocelyn, Suite No. 2: Berceuse
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album: Bartók: Symphonic Works, Vol. 2 (Complete Edition)

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Violin Concerto No. 3 in G Major, K. 216: II. Adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T21:25:57Z
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Cello Concerto No. 1 in C Major, Hob.VIIb:1: II. Adagio
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subject of: OpenTimestamps Proof of Existence
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Jocelyn, Suite No. 2: Berceuse
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subject of: OpenTimestamps Proof of Existence
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The Gadfly Suite, Op. 97a: VIII. Romance
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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 0xbd83c99159a1a60fdc45ffe84e87f35f8856de780ab5cfc823e47219fd168f2b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199617108 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: The Gadfly Suite, Op. 97a: VIII. Romance
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 144.778
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    value: 1
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
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    value: 5
  additional property: Danceability
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    value: 0.146
  additional property: Energy
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    value: 0.035
  additional property: Speechiness
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    value: 0.044
  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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    value: 0.038
  additional property: Loudness (dB)
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    value: -29.6
  additional property: Key Name
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    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Bartók: Symphonic Works, Vol. 2 (Complete Edition)
type: MusicAlbum
date published: 2014-11-01