Hiroki Ishiguro
type: MusicGroup
popularity: 16
followers: 581
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x77f16320446fb1d1f50ab07340c4b0e1b0c8fe4f8807b63e0016e5a91eefccf4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ea721949-b8f1-4427-862e-5b7da8c7f907.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ea721949-b8f1-4427-862e-5b7da8c7f907.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ea721949-b8f1-4427-862e-5b7da8c7f907
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x77f16320446fb1d1f50ab07340c4b0e1b0c8fe4f8807b63e0016e5a91eefccf4","name":"Hiroki Ishiguro","registered_at":"2026-06-15T05:10:07Z","symbol":"NIM0692049","token_address":"0x58984df5dd697ee524cf65a2e90da5fcf954ff91","type":"artist","uuid":"ea721949-b8f1-4427-862e-5b7da8c7f907"}
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 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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f16320446fb1d1f50ab07340c4b0e1b0c8fe4f8807b63e0016e5a91eefccf4. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea721949-b8f1-4427-862e-5b7da8c7f907.json and https://artists.proofprofile.net/proofs/artist/ea721949-b8f1-4427-862e-5b7da8c7f907.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T15:41:00Z
  text: {"copyright_id":"0x77f16320446fb1d1f50ab07340c4b0e1b0c8fe4f8807b63e0016e5a91eefccf4","name":"Hiroki Ishiguro","registered_at":"2026-06-15T05:10:07Z","symbol":"NIM0692049","token_address":"0x58984df5dd697ee524cf65a2e90da5fcf954ff91","type":"artist","uuid":"ea721949-b8f1-4427-862e-5b7da8c7f907"}
album: Daydream (2023 Remastered)
  type: MusicAlbum
  date published: 1992-04-01
album: DAYDREAM
  type: MusicAlbum
  date published: 1992-04-01
album: Daydream (2023 Remastered)
  type: MusicAlbum
  date published: 1992-04-01
album: DAYDREAM
  type: MusicAlbum
  date published: 1992-04-01
album: FUTURE
  type: MusicAlbum
  date published: 1993-07-01
album: FUTURE
  type: MusicAlbum
  date published: 1993-07-01
album: KOH MAITON
  type: MusicAlbum
  date published: 1993-07-01
album: KOH MAITON
  type: MusicAlbum
  date published: 1993-07-01
album: Three days memory (2023 Remastered)
  type: MusicAlbum
  date published: 1997-06-25
album: Green Flash
  type: MusicAlbum
  date published: 2001-07-01
album: Green Flash
  type: MusicAlbum
  date published: 2001-07-01
album: Utsuroi
  type: MusicAlbum
  date published: 2008-10-08
album: 透明な時間
  type: MusicAlbum
  date published: 2023-04-03
album: Transparent Moments
  type: MusicAlbum
  date published: 2023-04-03
album: Reflection
  type: MusicAlbum
  date published: 2024-03-02
album: Reflection
  type: MusicAlbum
  date published: 2024-03-02
album: Soft Breeze
  type: MusicAlbum
  date published: 2025-04-12
album: Soft Breeze
  type: MusicAlbum
  date published: 2025-04-12
album: Zigzag
  type: MusicAlbum
  date published: 2025-05-10
album: Zigzag
  type: MusicAlbum
  date published: 2025-05-10
album: Sparkly
  type: MusicAlbum
  date published: 2025-06-11
album: Sparkly
  type: MusicAlbum
  date published: 2025-06-11