長沢美樹 (クリームパンダ)
type: MusicGroup
popularity: 19
followers: 151
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x21c212a11b5769f8a6ce09471d532fc2aa27acba75cdca171f429e80389a3a2b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953812
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953812
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f6b2e6e5-3f73-4ee8-9f9f-5cc0fb955cac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f6b2e6e5-3f73-4ee8-9f9f-5cc0fb955cac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f6b2e6e5-3f73-4ee8-9f9f-5cc0fb955cac
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T17:06:52Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x21c212a11b5769f8a6ce09471d532fc2aa27acba75cdca171f429e80389a3a2b","name":"長沢美樹 (クリームパンダ)","registered_at":"2026-06-15T06:30:33Z","symbol":"NIM0711257","token_address":"0x3577bc04911531e3aaa649ea7ed5657d7f813b56","type":"artist","uuid":"f6b2e6e5-3f73-4ee8-9f9f-5cc0fb955cac"}
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 0x21c212a11b5769f8a6ce09471d532fc2aa27acba75cdca171f429e80389a3a2b. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6b2e6e5-3f73-4ee8-9f9f-5cc0fb955cac.json and https://artists.proofprofile.net/proofs/artist/f6b2e6e5-3f73-4ee8-9f9f-5cc0fb955cac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T17:06:52Z
  text: {"copyright_id":"0x21c212a11b5769f8a6ce09471d532fc2aa27acba75cdca171f429e80389a3a2b","name":"長沢美樹 (クリームパンダ)","registered_at":"2026-06-15T06:30:33Z","symbol":"NIM0711257","token_address":"0x3577bc04911531e3aaa649ea7ed5657d7f813b56","type":"artist","uuid":"f6b2e6e5-3f73-4ee8-9f9f-5cc0fb955cac"}