John Broomhall
type: MusicGroup
description: John Broomhall is an English composer, audio producer/director, journalist and consultant, working mainly in the video game industry. During the 1990s, Broomhall worked with MicroProse/Spectrum HoloBy
popularity: 25
followers: 386
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-12T19:24:56Z
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album: Cut to the Chase
  type: MusicAlbum
  date published: 2014-08-31
album: Blues for Wiswell
  type: MusicAlbum
  date published: 2014-09-01
track: Ufo Defense

Ufo Defense
type: MusicRecording
duration: PT3M4S
duration ms: 184137
explicit: false
by artist: Adam Schneider
by artist: John Broomhall
in album: XCOM Legacy (Original Soundtrack)
  type: MusicAlbum
  date published: 2018-10-09
isrc code: TCADW1869919
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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
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Ufo Defense
  type: AudioObject
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  additional property: Danceability
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Key Name
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