JK(次長課長)
type: MusicGroup
genre: anime
popularity: 10
followers: 126
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbd0bf35e04ee1848b2f3e721caea85c3e8a959d7afee0eea1b3ec5ebae4fb303
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953915
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1912af84-efb3-4ad9-aa0c-9eb3610c8d5f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1912af84-efb3-4ad9-aa0c-9eb3610c8d5f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1912af84-efb3-4ad9-aa0c-9eb3610c8d5f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbd0bf35e04ee1848b2f3e721caea85c3e8a959d7afee0eea1b3ec5ebae4fb303","name":"JK(次長課長)","registered_at":"2026-06-15T22:18:39Z","symbol":"NIM0849164","token_address":"0x2172f60f2cffce13e14e8a4ea4d8f987d613922f","type":"artist","uuid":"1912af84-efb3-4ad9-aa0c-9eb3610c8d5f"}
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 0xbd0bf35e04ee1848b2f3e721caea85c3e8a959d7afee0eea1b3ec5ebae4fb303. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1912af84-efb3-4ad9-aa0c-9eb3610c8d5f.json and https://artists.proofprofile.net/proofs/artist/1912af84-efb3-4ad9-aa0c-9eb3610c8d5f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T08:36:32Z
  text: {"copyright_id":"0xbd0bf35e04ee1848b2f3e721caea85c3e8a959d7afee0eea1b3ec5ebae4fb303","name":"JK(次長課長)","registered_at":"2026-06-15T22:18:39Z","symbol":"NIM0849164","token_address":"0x2172f60f2cffce13e14e8a4ea4d8f987d613922f","type":"artist","uuid":"1912af84-efb3-4ad9-aa0c-9eb3610c8d5f"}