Checkicco
type: MusicGroup
genre: city pop
genre: kayokyoku
description: were a Japanese idol group that was active from 1998 to 1999. It was formed by Masahiro Mizuguchi, a producer for Fuji TV who had the idea of creating "an Onyanko Club for the Heisei era (1989-2019)"
popularity: 4
followers: 623
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x130d2b4008826b0e10d1c3f30610e247abc62e124214339957e91b4e698e58aa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8b5e9b1-965e-43af-9bac-d2f18e3ad81c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8b5e9b1-965e-43af-9bac-d2f18e3ad81c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c8b5e9b1-965e-43af-9bac-d2f18e3ad81c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
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 0x130d2b4008826b0e10d1c3f30610e247abc62e124214339957e91b4e698e58aa. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8b5e9b1-965e-43af-9bac-d2f18e3ad81c.json and https://artists.proofprofile.net/proofs/artist/c8b5e9b1-965e-43af-9bac-d2f18e3ad81c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
album: 抱きしめて
  type: MusicAlbum
  date published: 1998
album: 最初のキモチ
  type: MusicAlbum
  date published: 1999
album: ありがとう
  type: MusicAlbum
  date published: 1999
album: 海へ行こう ~Love Beach Love~
  type: MusicAlbum
  date published: 1999
album: はじまり
  type: MusicAlbum
  date published: 1999
album: ドタバタギャグの日曜日
  type: MusicAlbum
  date published: 1999
album: Best Memories
  type: MusicAlbum
  date published: 1999-10-20
album: Dota Bata Gyagu no Nichiyoubi
  type: MusicAlbum
  date published: 2017-11-01
album: Saisho no Kimochi
  type: MusicAlbum
  date published: 2017-11-01
album: Hajimari
  type: MusicAlbum
  date published: 2017-11-01
album: Umi e Ikou - Love Beach Love -
  type: MusicAlbum
  date published: 2017-11-01
album: Arigatou
  type: MusicAlbum
  date published: 2017-11-01
album: Dakishimete
  type: MusicAlbum
  date published: 2017-11-01