築 二葉(CV:白井悠介)
type: MusicGroup
popularity: 7
followers: 289
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xad2f1c1b971866e3210b63e788380d1242e997ecf5020cb81496600e5abf2a04
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b4a7966f-1b6a-442d-87c3-6a1793184d46.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b4a7966f-1b6a-442d-87c3-6a1793184d46.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b4a7966f-1b6a-442d-87c3-6a1793184d46
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xad2f1c1b971866e3210b63e788380d1242e997ecf5020cb81496600e5abf2a04","name":"築 二葉(CV:白井悠介)","registered_at":"2026-06-20T14:40:43Z","symbol":"NIM1632183","token_address":"0xbd6240cd53dfdc904066f305d803d7698c5ac1f1","type":"artist","uuid":"b4a7966f-1b6a-442d-87c3-6a1793184d46"}
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 0xad2f1c1b971866e3210b63e788380d1242e997ecf5020cb81496600e5abf2a04. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4a7966f-1b6a-442d-87c3-6a1793184d46.json and https://artists.proofprofile.net/proofs/artist/b4a7966f-1b6a-442d-87c3-6a1793184d46.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xad2f1c1b971866e3210b63e788380d1242e997ecf5020cb81496600e5abf2a04","name":"築 二葉(CV:白井悠介)","registered_at":"2026-06-20T14:40:43Z","symbol":"NIM1632183","token_address":"0xbd6240cd53dfdc904066f305d803d7698c5ac1f1","type":"artist","uuid":"b4a7966f-1b6a-442d-87c3-6a1793184d46"}
album: 「VAZZROCK」bi-colorシリーズ③「築 二葉-topaz-」 (ドラマトラック追加版)
  type: MusicAlbum
  date published: 2018
album: 「VAZZROCK」bi-colorシリーズ③「築 二葉-topaz-」
  type: MusicAlbum
  date published: 2018-04-27
album: 「VAZZROCK」play of colorシリーズ③
  type: MusicAlbum
  date published: 2019-04-19
album: 「VAZZROCK」play of colorシリーズ③「いつかの話を君としよう」
  type: MusicAlbum
  date published: 2020-06-26
album: 「VAZZROCK」bi-colorシリーズ3rdシーズン⑤「築 二葉-topaz×sapphire- 世界で一番身近なライバル」
  type: MusicAlbum
  date published: 2021-07-30
album: 『VAZZROCK THE ANIMATION』エンディングテーマCD (vol.3 シアワセノカタチ／Escape)
  type: MusicAlbum
  date published: 2022-11-25