Keisuke Okazaki
type: MusicGroup
popularity: 3
followers: 38
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe48680cb8f6da96b2bd74fae7c77d5882771b15bdf2ac3f6b9c23f000921c45b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/593dfe0e-0ec8-4196-a13b-24159e723ed1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/593dfe0e-0ec8-4196-a13b-24159e723ed1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/593dfe0e-0ec8-4196-a13b-24159e723ed1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe48680cb8f6da96b2bd74fae7c77d5882771b15bdf2ac3f6b9c23f000921c45b","name":"Keisuke Okazaki","registered_at":"2026-06-16T20:46:04Z","symbol":"NIM1170801","token_address":"0x59be4487c28f99fbe0ddda2ef168f91fe0dedc10","type":"artist","uuid":"593dfe0e-0ec8-4196-a13b-24159e723ed1"}
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 0xe48680cb8f6da96b2bd74fae7c77d5882771b15bdf2ac3f6b9c23f000921c45b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/593dfe0e-0ec8-4196-a13b-24159e723ed1.json and https://artists.proofprofile.net/proofs/artist/593dfe0e-0ec8-4196-a13b-24159e723ed1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xe48680cb8f6da96b2bd74fae7c77d5882771b15bdf2ac3f6b9c23f000921c45b","name":"Keisuke Okazaki","registered_at":"2026-06-16T20:46:04Z","symbol":"NIM1170801","token_address":"0x59be4487c28f99fbe0ddda2ef168f91fe0dedc10","type":"artist","uuid":"593dfe0e-0ec8-4196-a13b-24159e723ed1"}
album: 岡崎慶輔デビュー！ 〜R.シュトラウス：ヴァイオリン・ソナタ
  type: MusicAlbum
  date published: 2000
album: クロイツェル & フランク
  type: MusicAlbum
  date published: 2008-09-21
album: Duo 2
  type: MusicAlbum
  date published: 2010-01-21
album: DUO4
  type: MusicAlbum
  date published: 2014-08-27
album: DUO 5
  type: MusicAlbum
  date published: 2017-06-28
album: DUO 5
  type: MusicAlbum
  date published: 2017-06-28