小松正史
type: MusicGroup
genre: japanese classical
genre: neoclassical
popularity: 5
followers: 254
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4dbcd1d0f446630edc349157ddbb61dc42570a1f88114e815c052ccd308ef1bf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954615
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954615
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c5ce3e51-1cdf-4273-81ce-718ea978429b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c5ce3e51-1cdf-4273-81ce-718ea978429b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c5ce3e51-1cdf-4273-81ce-718ea978429b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T22:44:50Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4dbcd1d0f446630edc349157ddbb61dc42570a1f88114e815c052ccd308ef1bf","name":"小松正史","registered_at":"2026-06-20T20:52:47Z","symbol":"NIM1711508","token_address":"0x8294a4f6fc50cb8ebaa6621935185b54934e44ae","type":"artist","uuid":"c5ce3e51-1cdf-4273-81ce-718ea978429b"}
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 0x4dbcd1d0f446630edc349157ddbb61dc42570a1f88114e815c052ccd308ef1bf. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5ce3e51-1cdf-4273-81ce-718ea978429b.json and https://artists.proofprofile.net/proofs/artist/c5ce3e51-1cdf-4273-81ce-718ea978429b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T22:44:50Z
  text: {"copyright_id":"0x4dbcd1d0f446630edc349157ddbb61dc42570a1f88114e815c052ccd308ef1bf","name":"小松正史","registered_at":"2026-06-20T20:52:47Z","symbol":"NIM1711508","token_address":"0x8294a4f6fc50cb8ebaa6621935185b54934e44ae","type":"artist","uuid":"c5ce3e51-1cdf-4273-81ce-718ea978429b"}
album: The Scene -Komatsu Masafumi piano works-
  type: MusicAlbum
  date published: 2002-06-20
album: Mahina
  type: MusicAlbum
  date published: 2004-04-20
album: コヨミウタ
  type: MusicAlbum
  date published: 2005-04-20
album: キョウトアンビエンス
  type: MusicAlbum
  date published: 2007-10-27
album: うち水
  type: MusicAlbum
  date published: 2008-10-30
album: イノセンス
  type: MusicAlbum
  date published: 2013-02-25
album: キョウトアンビエンス 2
  type: MusicAlbum
  date published: 2014-04-09
album: スターアンビエンス ～プラネタリウムのためのピアノ音楽～
  type: MusicAlbum
  date published: 2014-12-31
album: イン・ザ・グリーン ～美術館のためのピアノ音楽～
  type: MusicAlbum
  date published: 2015-08-19
album: スクール・メモリーズ ～マンガミュージアムのためのピアノ音楽～
  type: MusicAlbum
  date published: 2016-07-01
album: パークアンビエンス ~うみほし公園のためのピアノアンサンブル~
  type: MusicAlbum
  date published: 2016-10-13
album: 丹鉄メロディ ~京都丹後鉄道のサウンドブランディング~
  type: MusicAlbum
  date published: 2017-05-23
album: チャイルドスケープ
  type: MusicAlbum
  date published: 2017-09-15
album: いのちのそばに 1 ~医療空間のための環境音楽~
  type: MusicAlbum
  date published: 2017-10-20
album: 漢方音楽 ~漢方薬による環境音楽~
  type: MusicAlbum
  date published: 2018-11-14
album: プチピアノ 1 ~20の楽曲によるピアノ短編集~
  type: MusicAlbum
  date published: 2020-07-29
album: ピアノの風景 2 ~MASAFUMI KOMATSU PIANO WORKS~
  type: MusicAlbum
  date published: 2020-11-13
album: Pieta ~お葬式のための環境音楽~
  type: MusicAlbum
  date published: 2021-05-19
album: ピアノの風景 4 ~MASAFUMI KOMATSU PIANO WORKS~
  type: MusicAlbum
  date published: 2021-06-21
album: プチピアノ 2 ~20の楽曲によるピアノ短編集~
  type: MusicAlbum
  date published: 2021-10-20
album: ピアノの風景 5 ~MASAFUMI KOMATSU PIANO WORKS~
  type: MusicAlbum
  date published: 2022-09-09
album: The Sixth Sense 1 -Collaborative Works of Music and Fragrance-
  type: MusicAlbum
  date published: 2022-11-30
album: The Sixth Sense 2 -Collaborative Works of Music and Fragrance-
  type: MusicAlbum
  date published: 2022-11-30
album: The Sixth Sense 4 -Collaborative Works of Music and Fragrance-
  type: MusicAlbum
  date published: 2022-11-30
album: The Sixth Sense 3 -Collaborative Works of Music and Fragrance-
  type: MusicAlbum
  date published: 2022-11-30
album: The Sixth Sense 7 -Collaborative Works of Music and Fragrance-
  type: MusicAlbum
  date published: 2022-11-30
album: The Sixth Sense 8 -Collaborative Works of Music and Fragrance-
  type: MusicAlbum
  date published: 2022-11-30
album: The Sixth Sense 6 -Collaborative Works of Music and Fragrance-
  type: MusicAlbum
  date published: 2022-11-30
album: The Sixth Sense 5 -Collaborative Works of Music and Fragrance-
  type: MusicAlbum
  date published: 2022-11-30