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additional property: OTSVerifyInstructions
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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
subject of: OpenTimestamps Proof of Existence
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    additional property: OTSVerifyInstructions
      type: PropertyValue
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:22:41Z
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      date published: 2026-07-08T03:53:27Z
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  track: Oboe Concerto in G Minor, BWV 1056: II. Largo
  track: Oboe Concerto in G Major, TWV 51:2: I. Andante
  track: Oboe Concerto in G Minor, HWV 287: III. Sarabande. Largo
  track: Concerto in B-Flat, Wq. 164: II. Largo E Mesto, Con Sordini
  track: Sonata à Oboe, Violoncello e Basso in G Minor: III. Adagio
  track: Oboe Concerto in F Major, RV 456 "Harmonia Mundi": I. Largo
  track: Sonata in G Minor for Two Oboes, Bassoon and Basso Continuo: III. Largo
  track: Concerto for Oboe d'amore in A Major, TWV 51:2: III. Largo
  track: Sonata da camera in B-Flat Major: I. Adagio
  track: Oboe Concerto in E-Flat Major, TWV 51:S1: II. Largo
album: Favourite Oboe Concertos
album: Oboe Galante
album: Peaceful Oboe: The Romantic Collection
album: Telemann: The Concerto Collection

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Oboe Concerto in G Minor, BWV 1056: II. Largo
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by artist: Andrius Puskunigis
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Oboe Concerto in G Minor, BWV 1056: II. Largo
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Oboe Concerto in G Major, TWV 51:2: I. Andante
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Oboe Concerto in G Major, TWV 51:2: I. Andante
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Oboe Concerto in G Minor, HWV 287: III. Sarabande. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Oboe Concerto in G Minor, HWV 287: III. Sarabande. Largo
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Concerto in B-Flat, Wq. 164: II. Largo E Mesto, Con Sordini
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Sonata à Oboe, Violoncello e Basso in G Minor: III. Adagio
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Oboe Concerto in F Major, RV 456 "Harmonia Mundi": I. Largo
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subject of: OpenTimestamps Proof of Existence
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Sonata in G Minor for Two Oboes, Bassoon and Basso Continuo: III. Largo
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Concerto for Oboe d'amore in A Major, TWV 51:2: III. Largo
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Sonata da camera in B-Flat Major: I. Adagio
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Oboe Concerto in E-Flat Major, TWV 51:S1: II. Largo
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Favourite Oboe Concertos
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Oboe Galante
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Peaceful Oboe: The Romantic Collection
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Telemann: The Concerto Collection
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331603485
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a35225ca90482f8662083806ae419efaed417ccd5b0cd687158aaec7ce4a2dc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLY331603485.
    date published: 2026-07-08T08:56:20Z
  audio: Oboe Concerto in G Major, TWV 51:2: I. Andante
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 99.989
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.233
    additional property: Energy
      type: PropertyValue
      value: 0.141
    additional property: Speechiness
      type: PropertyValue
      value: 0.041
    additional property: Acousticness
      type: PropertyValue
      value: 0.736
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.876
    additional property: Liveness
      type: PropertyValue
      value: 0.08
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.25
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.66
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor