Hiroshi Matsui
type: MusicGroup
popularity: 2
followers: 541
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6494bf5ef23339339c9c626ae3f2a5dbbbd19b8e64e4bd4f30b0746bc9096525
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f6f83be9-c60e-4787-a3d1-90bc1dcbd828.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f6f83be9-c60e-4787-a3d1-90bc1dcbd828.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f6f83be9-c60e-4787-a3d1-90bc1dcbd828
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6494bf5ef23339339c9c626ae3f2a5dbbbd19b8e64e4bd4f30b0746bc9096525","name":"Hiroshi Matsui","registered_at":"2026-06-21T15:39:13Z","symbol":"NIM1961626","token_address":"0x0b6c6435737150fa12aae2b92223170b47bd4bea","type":"artist","uuid":"f6f83be9-c60e-4787-a3d1-90bc1dcbd828"}
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 0x6494bf5ef23339339c9c626ae3f2a5dbbbd19b8e64e4bd4f30b0746bc9096525. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6f83be9-c60e-4787-a3d1-90bc1dcbd828.json and https://artists.proofprofile.net/proofs/artist/f6f83be9-c60e-4787-a3d1-90bc1dcbd828.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x6494bf5ef23339339c9c626ae3f2a5dbbbd19b8e64e4bd4f30b0746bc9096525","name":"Hiroshi Matsui","registered_at":"2026-06-21T15:39:13Z","symbol":"NIM1961626","token_address":"0x0b6c6435737150fa12aae2b92223170b47bd4bea","type":"artist","uuid":"f6f83be9-c60e-4787-a3d1-90bc1dcbd828"}
album: Mirrorball Flare
  type: MusicAlbum
  date published: 2013-03-12
album: royal mirrorball classic 92~03
  type: MusicAlbum
  date published: 2015-12-02
album: Royal Mirrorball Classic 92~03
  type: MusicAlbum
  date published: 2015-12-02
album: MasterFlare (Vol-1)
  type: MusicAlbum
  date published: 2019-06-11
album: MasterFlare (vol-2)
  type: MusicAlbum
  date published: 2019-08-30
album: MasterFlare (for Comiket 96)
  type: MusicAlbum
  date published: 2019-09-08
album: MasterFlare (DF)
  type: MusicAlbum
  date published: 2019-10-30