Katsuya Yokoyama
type: MusicGroup
genre: japanese classical
genre: traditional music
description: was a Japanese musician who played the shakuhachi, a traditional vertical bamboo flute. Early life He was born in Shizuoka Prefecture in 1934 and studied Kinko-ryu and Azuma styles of music with his
popularity: 5
followers: 1105
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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 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
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  date published: 2026-06-17T08:10:43Z
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album: Japon : L'art du Shakuhachi (Série archives)
  type: MusicAlbum
  date published: 2017-03-03
track: Autumn
  type: MusicRecording
  duration: PT16M29S
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  by artist: Toru Takemitsu
  by artist: Ryusuke Numajiri
  by artist: Tokyo Metropolitan Symphony Orchestra
  by artist: Kakujo Nakamura
  by artist: Katsuya Yokoyama
  in album: Toru Takemitsu: Autumn
    type: MusicAlbum
    date published: 2009-01-01
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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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
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    date published: 2026-07-31T19:53:13Z
  audio: Autumn
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    additional property: Loudness (dB)
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    additional property: Key Name
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track: November Steps
  type: MusicRecording
  duration: PT19M59S
  duration ms: 1199000
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  by artist: Toru Takemitsu
  by artist: Tokyo Metropolitan Symphony Orchestra
  by artist: Hiroshi Wakasugi
  by artist: Kinshi Tsuruta
  by artist: Katsuya Yokoyama
  in album: Takemitsu: Visions, November Steps
    type: MusicAlbum
    date published: 2009-01-01
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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
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    date published: 2026-07-31T13:50:38Z
  audio: November Steps
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    additional property: Liveness
    additional property: Valence (Positivity)
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Instrumentalness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Mode Name
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