Yui Ichikawa
type: MusicGroup
genre: enka
description: is an actress and model from Tokyo, Japan. She is also known by her nickname, Yui-nyan. As an actress she has appeared in several dramas (doramas), and in recent years she has concentrated more on
popularity: 3
followers: 491
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2f0f1060f62bbf99cbd0959f3acf2c0c51ed0ddb5a100c753f1c45334613dba0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/63fbb75e-d903-45ac-b8bb-2851d9acce3a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/63fbb75e-d903-45ac-b8bb-2851d9acce3a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/63fbb75e-d903-45ac-b8bb-2851d9acce3a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2f0f1060f62bbf99cbd0959f3acf2c0c51ed0ddb5a100c753f1c45334613dba0","name":"Yui Ichikawa","registered_at":"2026-06-17T00:23:53Z","symbol":"NIM1222758","token_address":"0xaaf6f50cd0dae4b63b844f0aa5716c95a59e0d7e","type":"artist","uuid":"63fbb75e-d903-45ac-b8bb-2851d9acce3a"}
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 0x2f0f1060f62bbf99cbd0959f3acf2c0c51ed0ddb5a100c753f1c45334613dba0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63fbb75e-d903-45ac-b8bb-2851d9acce3a.json and https://artists.proofprofile.net/proofs/artist/63fbb75e-d903-45ac-b8bb-2851d9acce3a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x2f0f1060f62bbf99cbd0959f3acf2c0c51ed0ddb5a100c753f1c45334613dba0","name":"Yui Ichikawa","registered_at":"2026-06-17T00:23:53Z","symbol":"NIM1222758","token_address":"0xaaf6f50cd0dae4b63b844f0aa5716c95a59e0d7e","type":"artist","uuid":"63fbb75e-d903-45ac-b8bb-2851d9acce3a"}
album: Ame (Standard Edition)
  type: MusicAlbum
  date published: 2003
album: 雨
  type: MusicAlbum
  date published: 2003
album: Kira Kira
  type: MusicAlbum
  date published: 2004
album: Love Letter
  type: MusicAlbum
  date published: 2004
album: Ai wa Katsu
  type: MusicAlbum
  date published: 2004
album: i-pop mini
  type: MusicAlbum
  date published: 2004
album: love letter
  type: MusicAlbum
  date published: 2004-02-11
album: 愛は勝つ
  type: MusicAlbum
  date published: 2004-11-24
album: I-Pop Mini (Standard Edition)
  type: MusicAlbum
  date published: 2017-11-01