ナツ(CV:長縄まりあ)
type: MusicGroup
popularity: 9
followers: 15
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8cf8e7acc586104430b1d5bb2f1b211b3b632684a06a48a77d278f75cc0563c5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953922
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953922
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1c307868-4c04-4691-99db-91b86d099e91.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1c307868-4c04-4691-99db-91b86d099e91.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1c307868-4c04-4691-99db-91b86d099e91
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:36:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8cf8e7acc586104430b1d5bb2f1b211b3b632684a06a48a77d278f75cc0563c5","name":"ナツ(CV:長縄まりあ)","registered_at":"2026-06-15T23:22:02Z","symbol":"NIM0864309","token_address":"0x45fc68fd5722a215d0e079f8a16616d6f516a9b9","type":"artist","uuid":"1c307868-4c04-4691-99db-91b86d099e91"}
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 0x8cf8e7acc586104430b1d5bb2f1b211b3b632684a06a48a77d278f75cc0563c5. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c307868-4c04-4691-99db-91b86d099e91.json and https://artists.proofprofile.net/proofs/artist/1c307868-4c04-4691-99db-91b86d099e91.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T09:36:34Z
  text: {"copyright_id":"0x8cf8e7acc586104430b1d5bb2f1b211b3b632684a06a48a77d278f75cc0563c5","name":"ナツ(CV:長縄まりあ)","registered_at":"2026-06-15T23:22:02Z","symbol":"NIM0864309","token_address":"0x45fc68fd5722a215d0e079f8a16616d6f516a9b9","type":"artist","uuid":"1c307868-4c04-4691-99db-91b86d099e91"}