Koji Ueno
type: MusicGroup
popularity: 2
followers: 731
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe074d5c163196eaece17a2bd016853bcaa0ce7bbe9541816d2896c0819ccba3d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954647
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954647
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d6c80fa1-4e22-4fdc-8ce0-f55ab21644fa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d6c80fa1-4e22-4fdc-8ce0-f55ab21644fa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d6c80fa1-4e22-4fdc-8ce0-f55ab21644fa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:36:58Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe074d5c163196eaece17a2bd016853bcaa0ce7bbe9541816d2896c0819ccba3d","name":"Koji Ueno","registered_at":"2026-06-21T03:07:03Z","symbol":"NIM1800746","token_address":"0x487878d5b67ab579f59db19ad05408464ac91ca5","type":"artist","uuid":"d6c80fa1-4e22-4fdc-8ce0-f55ab21644fa"}
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 0xe074d5c163196eaece17a2bd016853bcaa0ce7bbe9541816d2896c0819ccba3d. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6c80fa1-4e22-4fdc-8ce0-f55ab21644fa.json and https://artists.proofprofile.net/proofs/artist/d6c80fa1-4e22-4fdc-8ce0-f55ab21644fa.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T04:36:58Z
  text: {"copyright_id":"0xe074d5c163196eaece17a2bd016853bcaa0ce7bbe9541816d2896c0819ccba3d","name":"Koji Ueno","registered_at":"2026-06-21T03:07:03Z","symbol":"NIM1800746","token_address":"0x487878d5b67ab579f59db19ad05408464ac91ca5","type":"artist","uuid":"d6c80fa1-4e22-4fdc-8ce0-f55ab21644fa"}
album: Music For Silent Movies
  type: MusicAlbum
  date published: 2006-02-22
album: Electronic Music
  type: MusicAlbum
  date published: 2011-11-19
album: Sirius B
  type: MusicAlbum
  date published: 2013-08-09
album: Original Soundtrack from the serial drama "Yume wo Ataeru"
  type: MusicAlbum
  date published: 2015-05-16
album: 日本テレビ系水曜ドラマ「高嶺の花」オリジナル・サウンドトラック
  type: MusicAlbum
  date published: 2018-08-29
album: Born to be a Flower Original Soundtrack (Takaneno Hana Original Soundtrack)
  type: MusicAlbum
  date published: 2018-08-29
album: 名付けようのない踊り (Unnameable Dance) [Original Soundtrack]
  type: MusicAlbum
  date published: 2022-01-28