Utsuki Chikage (CV: Wataru Hatano)
type: MusicGroup
popularity: 10
followers: 332
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8bc03a0b379b3ebde807b2f75f1db4bb6d0a3f1792d6e6b29bb9f0e76278f8d6
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/d3f6b4d8-422e-4755-bbf6-6b005c863a6e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d3f6b4d8-422e-4755-bbf6-6b005c863a6e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d3f6b4d8-422e-4755-bbf6-6b005c863a6e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8bc03a0b379b3ebde807b2f75f1db4bb6d0a3f1792d6e6b29bb9f0e76278f8d6","name":"Utsuki Chikage (CV: Wataru Hatano)","registered_at":"2026-06-21T02:06:55Z","symbol":"NIM1786483","token_address":"0x52503510edfaafc97928b2173fc95c85eaf49dc9","type":"artist","uuid":"d3f6b4d8-422e-4755-bbf6-6b005c863a6e"}
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 0x8bc03a0b379b3ebde807b2f75f1db4bb6d0a3f1792d6e6b29bb9f0e76278f8d6. 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/d3f6b4d8-422e-4755-bbf6-6b005c863a6e.json and https://artists.proofprofile.net/proofs/artist/d3f6b4d8-422e-4755-bbf6-6b005c863a6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T03:45:44Z
  text: {"copyright_id":"0x8bc03a0b379b3ebde807b2f75f1db4bb6d0a3f1792d6e6b29bb9f0e76278f8d6","name":"Utsuki Chikage (CV: Wataru Hatano)","registered_at":"2026-06-21T02:06:55Z","symbol":"NIM1786483","token_address":"0x52503510edfaafc97928b2173fc95c85eaf49dc9","type":"artist","uuid":"d3f6b4d8-422e-4755-bbf6-6b005c863a6e"}