じゃっく
type: MusicGroup
genre: vocaloid
popularity: 2
followers: 119
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5322e924ba8feafb461b5d3685b64733455ba188a7cafe632ec9321e307fa9d5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953842
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953842
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/00409467-9f16-44ad-bc80-6ccc5670621b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/00409467-9f16-44ad-bc80-6ccc5670621b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/00409467-9f16-44ad-bc80-6ccc5670621b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:22:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5322e924ba8feafb461b5d3685b64733455ba188a7cafe632ec9321e307fa9d5","name":"じゃっく","registered_at":"2026-06-15T13:45:29Z","symbol":"NIM0726734","token_address":"0x02a2a0dc785642bc12a098adfaf2bd6085010764","type":"artist","uuid":"00409467-9f16-44ad-bc80-6ccc5670621b"}
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 0x5322e924ba8feafb461b5d3685b64733455ba188a7cafe632ec9321e307fa9d5. Chain 2 (Bitcoin): anchored in block 953844 (2026-06-15T22:28:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00409467-9f16-44ad-bc80-6ccc5670621b.json and https://artists.proofprofile.net/proofs/artist/00409467-9f16-44ad-bc80-6ccc5670621b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:28:08Z
  text: {"copyright_id":"0x5322e924ba8feafb461b5d3685b64733455ba188a7cafe632ec9321e307fa9d5","name":"じゃっく","registered_at":"2026-06-15T13:45:29Z","symbol":"NIM0726734","token_address":"0x02a2a0dc785642bc12a098adfaf2bd6085010764","type":"artist","uuid":"00409467-9f16-44ad-bc80-6ccc5670621b"}
album: スナックじゃっく〜BEST HIT COVER COLLECTION〜
  type: MusicAlbum
  date published: 2014-06-18