Michie Koyama
type: MusicGroup
genre: classical piano
popularity: 15
followers: 1484
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5837b2637f942c80203984c2993b0e31fa6980d81d80d3841b5910478cf2d864
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953827
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953827
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/db83aa95-fc7b-4fc9-b574-dca5352e33f4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/db83aa95-fc7b-4fc9-b574-dca5352e33f4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/db83aa95-fc7b-4fc9-b574-dca5352e33f4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T19:59:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5837b2637f942c80203984c2993b0e31fa6980d81d80d3841b5910478cf2d864","name":"Michie Koyama","registered_at":"2026-06-15T03:42:33Z","symbol":"NIM0671146","token_address":"0x92829f8724f16594ba858751f6597818fb110758","type":"artist","uuid":"db83aa95-fc7b-4fc9-b574-dca5352e33f4"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5837b2637f942c80203984c2993b0e31fa6980d81d80d3841b5910478cf2d864. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db83aa95-fc7b-4fc9-b574-dca5352e33f4.json and https://artists.proofprofile.net/proofs/artist/db83aa95-fc7b-4fc9-b574-dca5352e33f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
  text: {"copyright_id":"0x5837b2637f942c80203984c2993b0e31fa6980d81d80d3841b5910478cf2d864","name":"Michie Koyama","registered_at":"2026-06-15T03:42:33Z","symbol":"NIM0671146","token_address":"0x92829f8724f16594ba858751f6597818fb110758","type":"artist","uuid":"db83aa95-fc7b-4fc9-b574-dca5352e33f4"}
album: リスト：ピアノ・ソナタ/ラフマニノフ：前奏曲集
  type: MusicAlbum
  date published: 1988
album: リスト：ピアノ・ソナタ/ラフマニノフ：前奏曲集
  type: MusicAlbum
  date published: 1988
album: アンコール＋
  type: MusicAlbum
  date published: 1989
album: アンコール＋
  type: MusicAlbum
  date published: 1989
album: リスト＆チャイコフスキー：ピアノ協奏曲
  type: MusicAlbum
  date published: 1990
album: 小山実稚恵：ベスト・アルバム
  type: MusicAlbum
  date published: 1991
album: ファリャ：組曲「恋は魔術師」
  type: MusicAlbum
  date published: 1992
album: ラフマニノフ：練習曲集「音の絵」作品33&作品39
  type: MusicAlbum
  date published: 1996
album: 夜想曲集
  type: MusicAlbum
  date published: 1997-09-21
album: リスト＆ベルク：ソナタ 他
  type: MusicAlbum
  date published: 1998-10-21
album: ファンタジー
  type: MusicAlbum
  date published: 1999-09-22
album: 小山実稚恵 国民楽派ピアノ・セレクション
  type: MusicAlbum
  date published: 2003
album: 小山実稚恵 国民楽派ピアノ・セレクション
  type: MusicAlbum
  date published: 2003
album: アンコール＋
  type: MusicAlbum
  date published: 2007-10-24
album: ヴォカリーズ
  type: MusicAlbum
  date published: 2012-01-25
album: ヴォカリーズ
  type: MusicAlbum
  date published: 2012-01-25
  track: 月の光
    type: MusicRecording
    duration: PT5M17S
    duration ms: 317466
    explicit: false
    by artist: Michie Koyama
    in album: ヴォカリーズ
      type: MusicAlbum
      date published: 2012-01-25
    genre: classical piano
    isrc code: JPN201100925
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
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    additional property: CopyrightChainExplorerURL
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN201100925
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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 0x3fd13de9e022b5ecb2cd614276e383bb042bd14406423d4548d8b0ea38c31415. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPN201100925.
      date published: 2026-07-03T08:56:35Z
    audio: 月の光
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 60.113
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.374
      additional property: Energy
        type: PropertyValue
        value: 0.007
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.995
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.892
      additional property: Liveness
        type: PropertyValue
        value: 0.071
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.04
      additional property: Loudness (dB)
        type: PropertyValue
        value: -29.738
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: シャコンヌ
  type: MusicAlbum
  date published: 2013-04-17
album: カンタービレ
  type: MusicAlbum
  date published: 2020-11-25
album: モノローグ
  type: MusicAlbum
  date published: 2023-05-03
album: アルバム
  type: MusicAlbum
  date published: 2025-10-08