心華
type: MusicGroup
genre: vocaloid
popularity: 16
followers: 944
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x28f4bdb13608f8f546156269c38d40189cb3dfc02b40bf8e214e7f1f6403042c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953596
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953596
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0a5ffeac-72f4-42ec-a3f3-c12ae8814a56.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0a5ffeac-72f4-42ec-a3f3-c12ae8814a56.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0a5ffeac-72f4-42ec-a3f3-c12ae8814a56
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T06:21:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x28f4bdb13608f8f546156269c38d40189cb3dfc02b40bf8e214e7f1f6403042c","name":"心華","registered_at":"2026-06-14T05:34:09Z","symbol":"NIM0354223","token_address":"0x1f184e7a5a54f723a363b59340d5031c3c65ffe2","type":"artist","uuid":"0a5ffeac-72f4-42ec-a3f3-c12ae8814a56"}
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 0x28f4bdb13608f8f546156269c38d40189cb3dfc02b40bf8e214e7f1f6403042c. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a5ffeac-72f4-42ec-a3f3-c12ae8814a56.json and https://artists.proofprofile.net/proofs/artist/0a5ffeac-72f4-42ec-a3f3-c12ae8814a56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T06:21:39Z
  text: {"copyright_id":"0x28f4bdb13608f8f546156269c38d40189cb3dfc02b40bf8e214e7f1f6403042c","name":"心華","registered_at":"2026-06-14T05:34:09Z","symbol":"NIM0354223","token_address":"0x1f184e7a5a54f723a363b59340d5031c3c65ffe2","type":"artist","uuid":"0a5ffeac-72f4-42ec-a3f3-c12ae8814a56"}
album: 心華EP 〜春とら!〜
  type: MusicAlbum
  date published: 2018-04-11
album: 心華EP 〜春とら！〜
  type: MusicAlbum
  date published: 2018-04-11
album: Hello~
  type: MusicAlbum
  date published: 2022-09-23
album: 還不想離開呢
  type: MusicAlbum
  date published: 2023-04-27