千花
type: MusicGroup
genre: progressive house
popularity: 4
followers: 119
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x66f9930c382433f2d960330057394be64e369e9e69a06252aaf5f77b8415dc79
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e6e83877-4ff3-4871-8c41-85f1f8c517ed.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e6e83877-4ff3-4871-8c41-85f1f8c517ed.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e6e83877-4ff3-4871-8c41-85f1f8c517ed
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x66f9930c382433f2d960330057394be64e369e9e69a06252aaf5f77b8415dc79","name":"千花","registered_at":"2026-06-21T09:03:53Z","symbol":"NIM1879622","token_address":"0xcc44c3217e3c7f167932c1e49221feb391cec5b9","type":"artist","uuid":"e6e83877-4ff3-4871-8c41-85f1f8c517ed"}
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 0x66f9930c382433f2d960330057394be64e369e9e69a06252aaf5f77b8415dc79. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6e83877-4ff3-4871-8c41-85f1f8c517ed.json and https://artists.proofprofile.net/proofs/artist/e6e83877-4ff3-4871-8c41-85f1f8c517ed.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0x66f9930c382433f2d960330057394be64e369e9e69a06252aaf5f77b8415dc79","name":"千花","registered_at":"2026-06-21T09:03:53Z","symbol":"NIM1879622","token_address":"0xcc44c3217e3c7f167932c1e49221feb391cec5b9","type":"artist","uuid":"e6e83877-4ff3-4871-8c41-85f1f8c517ed"}
album: エイセイチカ
  type: MusicAlbum
  date published: 2018-02-07
album: rise again
  type: MusicAlbum
  date published: 2019-08-07
album: illumination (feat. Shunji Fujii)
  type: MusicAlbum
  date published: 2020-10-25
album: It's one of those days (feat. Shunji Fujii)
  type: MusicAlbum
  date published: 2020-10-25
album: farewell (feat. Shunji Fujii)
  type: MusicAlbum
  date published: 2020-10-25
album: A quiet night in December (feat. Shunji Fujii)
  type: MusicAlbum
  date published: 2020-10-25
album: You
  type: MusicAlbum
  date published: 2022-01-01