Masakazu Kurihara
type: MusicGroup
popularity: 19
followers: 352
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x90ccdcbd11811defbf48ee0bf955991debc2d33b52efc815433e54a8201aa575
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953770
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953770
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/96e3776e-5c34-4752-ac1e-dc45981826f6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/96e3776e-5c34-4752-ac1e-dc45981826f6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/96e3776e-5c34-4752-ac1e-dc45981826f6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T09:50:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x90ccdcbd11811defbf48ee0bf955991debc2d33b52efc815433e54a8201aa575","name":"Masakazu Kurihara","registered_at":"2026-06-14T20:21:56Z","symbol":"NIM0565940","token_address":"0x11b8c4066b1e5aa350086c771577c3ecfaad8413","type":"artist","uuid":"96e3776e-5c34-4752-ac1e-dc45981826f6"}
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 0x90ccdcbd11811defbf48ee0bf955991debc2d33b52efc815433e54a8201aa575. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96e3776e-5c34-4752-ac1e-dc45981826f6.json and https://artists.proofprofile.net/proofs/artist/96e3776e-5c34-4752-ac1e-dc45981826f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T09:50:11Z
  text: {"copyright_id":"0x90ccdcbd11811defbf48ee0bf955991debc2d33b52efc815433e54a8201aa575","name":"Masakazu Kurihara","registered_at":"2026-06-14T20:21:56Z","symbol":"NIM0565940","token_address":"0x11b8c4066b1e5aa350086c771577c3ecfaad8413","type":"artist","uuid":"96e3776e-5c34-4752-ac1e-dc45981826f6"}
album: ロマンティックピアノに魅せられて・・・「栗原正和ピアノリサイタル」
  type: MusicAlbum
  date published: 1995-05-01
album: Melody
  type: MusicAlbum
  date published: 2003-02-01
album: SONGS
  type: MusicAlbum
  date published: 2018-01-05
album: Elegance
  type: MusicAlbum
  date published: 2020-10-31
album: ロマンティックピアノに魅せられて
  type: MusicAlbum
  date published: 2020-10-31