サクヤコノハナ
type: MusicGroup
genre: j-rock
popularity: 8
followers: 943
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf2f20683104f80858ab89ac290c19bb34c5b71bb427ff52c89d0731305c93c26
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bae324f4-b0c7-4c86-ad75-d096dde8095d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bae324f4-b0c7-4c86-ad75-d096dde8095d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bae324f4-b0c7-4c86-ad75-d096dde8095d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf2f20683104f80858ab89ac290c19bb34c5b71bb427ff52c89d0731305c93c26","name":"サクヤコノハナ","registered_at":"2026-06-20T16:58:03Z","symbol":"NIM1659193","token_address":"0x67d28200f45ab7e104e2f076435c88318778fe61","type":"artist","uuid":"bae324f4-b0c7-4c86-ad75-d096dde8095d"}
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 0xf2f20683104f80858ab89ac290c19bb34c5b71bb427ff52c89d0731305c93c26. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bae324f4-b0c7-4c86-ad75-d096dde8095d.json and https://artists.proofprofile.net/proofs/artist/bae324f4-b0c7-4c86-ad75-d096dde8095d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:10:41Z
  text: {"copyright_id":"0xf2f20683104f80858ab89ac290c19bb34c5b71bb427ff52c89d0731305c93c26","name":"サクヤコノハナ","registered_at":"2026-06-20T16:58:03Z","symbol":"NIM1659193","token_address":"0x67d28200f45ab7e104e2f076435c88318778fe61","type":"artist","uuid":"bae324f4-b0c7-4c86-ad75-d096dde8095d"}
album: ココロノトビラ
  type: MusicAlbum
  date published: 2019-01-17
album: Farewell
  type: MusicAlbum
  date published: 2019-04-16
album: あいまいME
  type: MusicAlbum
  date published: 2021-04-28
album: Convenience Girls
  type: MusicAlbum
  date published: 2023-03-06
album: トメラレナイ
  type: MusicAlbum
  date published: 2024-05-21
album: 未来の花
  type: MusicAlbum
  date published: 2024-05-28
album: あげぴ
  type: MusicAlbum
  date published: 2025-03-12
album: 初恋キンセンカ
  type: MusicAlbum
  date published: 2025-08-19