DANZI
type: MusicGroup
genre: vocaloid
description: Danzi or D'Anzi is a surname. Notable people with the surname include: Francesca Lebrun, née Danzi (1756 – 1791), 18th-century a German singer and composer Franz Danzi (Franz Ignaz Danzi) (1763 – 1
popularity: 2
followers: 18
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xca772bcfe1379d4456d63264d99eadc4fc215a5ea1ae5ce73cd1ae1346c88f53
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954638
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954638
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d33c6688-c586-4d93-9e51-3636014b0a6d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d33c6688-c586-4d93-9e51-3636014b0a6d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d33c6688-c586-4d93-9e51-3636014b0a6d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
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 0xca772bcfe1379d4456d63264d99eadc4fc215a5ea1ae5ce73cd1ae1346c88f53. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d33c6688-c586-4d93-9e51-3636014b0a6d.json and https://artists.proofprofile.net/proofs/artist/d33c6688-c586-4d93-9e51-3636014b0a6d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T03:45:44Z
album: またうっとうしの日だ
  type: MusicAlbum
  date published: 2024-08-05
album: 不幸人間強制収容所
  type: MusicAlbum
  date published: 2024-10-11
album: SPLIT
  type: MusicAlbum
  date published: 2025-04-19
album: 一か八かやってみよう！
  type: MusicAlbum
  date published: 2025-06-14