Yuuka Ueno
type: MusicGroup
popularity: 4
followers: 188
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc4fe81915e97b783fc6748e14238457b3d5723a01b52c0aa0cd67ed4340f4326
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/52dbdfae-c0ba-41ae-af43-d26c885a903c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/52dbdfae-c0ba-41ae-af43-d26c885a903c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/52dbdfae-c0ba-41ae-af43-d26c885a903c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc4fe81915e97b783fc6748e14238457b3d5723a01b52c0aa0cd67ed4340f4326","name":"Yuuka Ueno","registered_at":"2026-06-16T18:24:25Z","symbol":"NIM1136992","token_address":"0x4f83fcbc02c409d0ed630434eb659767191e41fd","type":"artist","uuid":"52dbdfae-c0ba-41ae-af43-d26c885a903c"}
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 0xc4fe81915e97b783fc6748e14238457b3d5723a01b52c0aa0cd67ed4340f4326. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52dbdfae-c0ba-41ae-af43-d26c885a903c.json and https://artists.proofprofile.net/proofs/artist/52dbdfae-c0ba-41ae-af43-d26c885a903c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xc4fe81915e97b783fc6748e14238457b3d5723a01b52c0aa0cd67ed4340f4326","name":"Yuuka Ueno","registered_at":"2026-06-16T18:24:25Z","symbol":"NIM1136992","token_address":"0x4f83fcbc02c409d0ed630434eb659767191e41fd","type":"artist","uuid":"52dbdfae-c0ba-41ae-af43-d26c885a903c"}
album: U to You
  type: MusicAlbum
  date published: 2018-01-17
album: 夢の切れ端(꿈의 조각)
  type: MusicAlbum
  date published: 2022-05-01
album: 恋をしました。あなたに
  type: MusicAlbum
  date published: 2023-03-15
album: First Love
  type: MusicAlbum
  date published: 2024-01-24
album: 다른 사람의 여자친구가 되었어
  type: MusicAlbum
  date published: 2024-02-07