中野四葉(CV:佐倉綾音)
type: MusicGroup
genre: anime
popularity: 14
followers: 1681
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1511937ab4aa10d93cae5ee70485e7d6bf6ed83deb52599edce2b42d4fd32773
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953681
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953681
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/64308d06-b3a7-46b6-8350-61017f59155e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/64308d06-b3a7-46b6-8350-61017f59155e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/64308d06-b3a7-46b6-8350-61017f59155e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T19:31:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1511937ab4aa10d93cae5ee70485e7d6bf6ed83deb52599edce2b42d4fd32773","name":"中野四葉(CV:佐倉綾音)","registered_at":"2026-06-14T15:01:39Z","symbol":"NIM0489581","token_address":"0x40569a4aa9601225003ad7ac091f45c3bd379c26","type":"artist","uuid":"64308d06-b3a7-46b6-8350-61017f59155e"}
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 0x1511937ab4aa10d93cae5ee70485e7d6bf6ed83deb52599edce2b42d4fd32773. Chain 2 (Bitcoin): anchored in block 953681 (2026-06-14T19:31:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64308d06-b3a7-46b6-8350-61017f59155e.json and https://artists.proofprofile.net/proofs/artist/64308d06-b3a7-46b6-8350-61017f59155e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T19:31:23Z
  text: {"copyright_id":"0x1511937ab4aa10d93cae5ee70485e7d6bf6ed83deb52599edce2b42d4fd32773","name":"中野四葉(CV:佐倉綾音)","registered_at":"2026-06-14T15:01:39Z","symbol":"NIM0489581","token_address":"0x40569a4aa9601225003ad7ac091f45c3bd379c26","type":"artist","uuid":"64308d06-b3a7-46b6-8350-61017f59155e"}