Polygraph
type: MusicGroup
genre: metalcore
description: thumb|American inventor Leonarde Keeler testing his improved polygraph on Arthur Koehler, a former witness for the prosecution at the 1935 trial of Richard Hauptmann A polygraph, often incorrectly ref
popularity: 5
followers: 599
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additional property: CopyrightChainExplorerURL
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b3c6a542aa04c330a784ec2a79e7530bd3ca4c4038d341a923906eb15c5ddb. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eed934dc-b361-483d-a568-c6204fede92b.json and https://artists.proofprofile.net/proofs/artist/eed934dc-b361-483d-a568-c6204fede92b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
album: Impress Me
  type: MusicAlbum
  date published: 2021-12-03
album: The Hopeless
  type: MusicAlbum
  date published: 2022-04-29
album: On The Edge
  type: MusicAlbum
  date published: 2023-08-25
album: The Process
  type: MusicAlbum
  date published: 2023-09-28
album: Aconite
  type: MusicAlbum
  date published: 2025-06-27
  track: Aconite
    type: MusicRecording
    duration: PT4M7S
    duration ms: 247615
    explicit: true
    by artist: Polygraph
    in album: Aconite
      type: MusicAlbum
      date published: 2025-06-27
    genre: metalcore
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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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b8e98083dddc39ad0759ed2113e3582d1a8dd833dec7e7515ea7500b148ba3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTAT2555672.
      date published: 2026-07-16T12:43:37Z
    audio: Aconite
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.953
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
        type: PropertyValue
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      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
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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
        type: PropertyValue
        value: E
      additional property: Mode Name
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album: Twenty-Six
  type: MusicAlbum
  date published: 2025-09-19
album: Nightbloom
  type: MusicAlbum
  date published: 2025-10-17