Kazuyo Shionoiri
type: MusicGroup
popularity: 3
followers: 13
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7696cb47123d98c91935a03b40bf3ddeb225c8daae1cefb41579d2ab2a3d3c0c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953923
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953923
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1c29fdc9-69a6-42ad-92b3-0117e5eca20e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1c29fdc9-69a6-42ad-92b3-0117e5eca20e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1c29fdc9-69a6-42ad-92b3-0117e5eca20e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:51:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7696cb47123d98c91935a03b40bf3ddeb225c8daae1cefb41579d2ab2a3d3c0c","name":"Kazuyo Shionoiri","registered_at":"2026-06-15T23:23:32Z","symbol":"NIM0864667","token_address":"0x0db899f7656f23c136b8e8c22e16512dad58e763","type":"artist","uuid":"1c29fdc9-69a6-42ad-92b3-0117e5eca20e"}
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 0x7696cb47123d98c91935a03b40bf3ddeb225c8daae1cefb41579d2ab2a3d3c0c. Chain 2 (Bitcoin): anchored in block 953923 (2026-06-16T09:51:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c29fdc9-69a6-42ad-92b3-0117e5eca20e.json and https://artists.proofprofile.net/proofs/artist/1c29fdc9-69a6-42ad-92b3-0117e5eca20e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T09:51:37Z
  text: {"copyright_id":"0x7696cb47123d98c91935a03b40bf3ddeb225c8daae1cefb41579d2ab2a3d3c0c","name":"Kazuyo Shionoiri","registered_at":"2026-06-15T23:23:32Z","symbol":"NIM0864667","token_address":"0x0db899f7656f23c136b8e8c22e16512dad58e763","type":"artist","uuid":"1c29fdc9-69a6-42ad-92b3-0117e5eca20e"}