Head Phones President
type: MusicGroup
genre: alternative metal
genre: j-rock
genre: nu metal
genre: visual kei
description: Head Phones President (stylized in all caps) is a Japanese metal band formed in Tokyo in 1999. Their sound has been described as alternative metal, progressive metal, avant-garde metal, and nu metal
popularity: 9
followers: 4001
additional property: CopyrightID
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 0xab8daa50f538d0b30efb86874af0d3e1d1ea52eee67c6b1efbabf58f6ec17367. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e259b87d-f662-4a32-90d0-3759b586f658.json and https://artists.proofprofile.net/proofs/artist/e259b87d-f662-4a32-90d0-3759b586f658.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T10:35:31Z
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album: Nowhere
  type: MusicAlbum
  date published: 2009-07-10
album: Prodigium
  type: MusicAlbum
  date published: 2009-10-07
album: Pobl Lliw
  type: MusicAlbum
  date published: 2010-09-03
album: PURGE THE WORLD
  type: MusicAlbum
  date published: 2012-04-02
album: Stand In The World
  type: MusicAlbum
  date published: 2012-06-06
album: Stand In The World
  type: MusicAlbum
  date published: 2012-06-06
  track: Stand In The World
    type: MusicRecording
    duration: PT4M30S
    duration ms: 270440
    explicit: false
    by artist: Head Phones President
    in album: Stand In The World
      type: MusicAlbum
      date published: 2012-06-06
    genre: alternative metal
    genre: j-rock
    genre: nu metal
    genre: visual kei
    isrc code: JPD731200327
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    additional property: OTSVerificationAPI
      type: PropertyValue
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    additional property: OTSTimestamp
      type: PropertyValue
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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
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9071956b3a402f1ba0210dcc30649edb53945af3a11ce576c4b14370bbd4447. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:19:53Z), 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/JPD731200327.
      date published: 2026-07-22T09:19:53Z
    audio: Stand In The World
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
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      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
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      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
        type: PropertyValue
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      additional property: Speechiness
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      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
        value: 0.272
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.266
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.622
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Disillusion
  type: MusicAlbum
  date published: 2014-08-06
album: Disillusion
  type: MusicAlbum
  date published: 2015-10-16
album: Alteration
  type: MusicAlbum
  date published: 2015-11-18
album: Realize
  type: MusicAlbum
  date published: 2017-05-17
album: Respawn
  type: MusicAlbum
  date published: 2019-07-24
album: Burn It All Down
  type: MusicAlbum
  date published: 2024-05-29
album: The Moon Chases Me
  type: MusicAlbum
  date published: 2024-06-19
album: In the Abyss
  type: MusicAlbum
  date published: 2024-07-10