Junko Kawada
type: MusicGroup
genre: city pop
genre: kayokyoku
description: (born November 22, 1974, in Akita, Akita, Japan) is a former J-pop idol, singer-songwriter and actress. Throughout her career, she released three albums and nine singles. Biography Early life Junko
popularity: 3
followers: 627
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8409a3bf72ecdf1eba4a5cd2e6cdabcd04c56c17affbffeb0ef8b3ad768aac5e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/88a559f2-114d-4136-b505-534834cf2b7d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/88a559f2-114d-4136-b505-534834cf2b7d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/88a559f2-114d-4136-b505-534834cf2b7d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8409a3bf72ecdf1eba4a5cd2e6cdabcd04c56c17affbffeb0ef8b3ad768aac5e","name":"Junko Kawada","registered_at":"2026-06-17T13:15:44Z","symbol":"NIM1406770","token_address":"0x462e792001b1c05dfe96c7d73526227768f2252d","type":"artist","uuid":"88a559f2-114d-4136-b505-534834cf2b7d"}
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 0x8409a3bf72ecdf1eba4a5cd2e6cdabcd04c56c17affbffeb0ef8b3ad768aac5e. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88a559f2-114d-4136-b505-534834cf2b7d.json and https://artists.proofprofile.net/proofs/artist/88a559f2-114d-4136-b505-534834cf2b7d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x8409a3bf72ecdf1eba4a5cd2e6cdabcd04c56c17affbffeb0ef8b3ad768aac5e","name":"Junko Kawada","registered_at":"2026-06-17T13:15:44Z","symbol":"NIM1406770","token_address":"0x462e792001b1c05dfe96c7d73526227768f2252d","type":"artist","uuid":"88a559f2-114d-4136-b505-534834cf2b7d"}
album: あしたげんきになあれ
  type: MusicAlbum
  date published: 1989
album: あしたげんきになあれ
  type: MusicAlbum
  date published: 1989-08-21
album: Jun mind
  type: MusicAlbum
  date published: 1990
album: Jun mind
  type: MusicAlbum
  date published: 1990-06-21