桜井日奈子
type: MusicGroup
popularity: 2
followers: 347
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x163794cee61058dbec6ba656b04aa07ca39c8cd86b86f512abb675f69c677179
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1820ba56-ca72-444e-8889-fdd00d119775.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1820ba56-ca72-444e-8889-fdd00d119775.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1820ba56-ca72-444e-8889-fdd00d119775
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x163794cee61058dbec6ba656b04aa07ca39c8cd86b86f512abb675f69c677179","name":"桜井日奈子","registered_at":"2026-06-15T21:55:34Z","symbol":"NIM0843669","token_address":"0x6c58d9a192710bb51667d3b8d3120fbceb2be181","type":"artist","uuid":"1820ba56-ca72-444e-8889-fdd00d119775"}
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 0x163794cee61058dbec6ba656b04aa07ca39c8cd86b86f512abb675f69c677179. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1820ba56-ca72-444e-8889-fdd00d119775.json and https://artists.proofprofile.net/proofs/artist/1820ba56-ca72-444e-8889-fdd00d119775.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x163794cee61058dbec6ba656b04aa07ca39c8cd86b86f512abb675f69c677179","name":"桜井日奈子","registered_at":"2026-06-15T21:55:34Z","symbol":"NIM0843669","token_address":"0x6c58d9a192710bb51667d3b8d3120fbceb2be181","type":"artist","uuid":"1820ba56-ca72-444e-8889-fdd00d119775"}
album: 花と毒薬
  type: MusicAlbum
  date published: 2019-08-16