にっけい
type: MusicGroup
genre: vocaloid
popularity: 2
followers: 225
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5ec81101184a5f56e4e2d2a6451941d23f4746c9979d10a21ef59c33d1a1f763
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bfb6fd7a-d2c5-4650-8888-0656bf0d0b23.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bfb6fd7a-d2c5-4650-8888-0656bf0d0b23.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bfb6fd7a-d2c5-4650-8888-0656bf0d0b23
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5ec81101184a5f56e4e2d2a6451941d23f4746c9979d10a21ef59c33d1a1f763","name":"にっけい","registered_at":"2026-06-20T18:54:15Z","symbol":"NIM1682465","token_address":"0xe8ab111c79517dcac2fa4178290bd8a8588d7048","type":"artist","uuid":"bfb6fd7a-d2c5-4650-8888-0656bf0d0b23"}
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 0x5ec81101184a5f56e4e2d2a6451941d23f4746c9979d10a21ef59c33d1a1f763. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfb6fd7a-d2c5-4650-8888-0656bf0d0b23.json and https://artists.proofprofile.net/proofs/artist/bfb6fd7a-d2c5-4650-8888-0656bf0d0b23.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0x5ec81101184a5f56e4e2d2a6451941d23f4746c9979d10a21ef59c33d1a1f763","name":"にっけい","registered_at":"2026-06-20T18:54:15Z","symbol":"NIM1682465","token_address":"0xe8ab111c79517dcac2fa4178290bd8a8588d7048","type":"artist","uuid":"bfb6fd7a-d2c5-4650-8888-0656bf0d0b23"}
album: ブルーライトユニバース
  type: MusicAlbum
  date published: 2022-02-16
album: 昊天、燈、夏に咽ぶ
  type: MusicAlbum
  date published: 2022-02-16
album: ニヒル
  type: MusicAlbum
  date published: 2022-02-16
album: メルディ
  type: MusicAlbum
  date published: 2022-02-16
album: 落陽に彷徨う
  type: MusicAlbum
  date published: 2022-02-16
album: 夏の蜃気楼
  type: MusicAlbum
  date published: 2022-02-16
album: いつか消える
  type: MusicAlbum
  date published: 2022-02-16
album: プルメリア
  type: MusicAlbum
  date published: 2022-05-18
album: 幾星霜
  type: MusicAlbum
  date published: 2022-09-09
album: どうせならあの日、死ねばよかった
  type: MusicAlbum
  date published: 2023-02-22
album: ねえタイムトラベラー
  type: MusicAlbum
  date published: 2023-05-10
album: 褪めないで
  type: MusicAlbum
  date published: 2023-10-25
album: シーグラスグレイ
  type: MusicAlbum
  date published: 2023-10-25
album: 薄らとした夏を憶えている
  type: MusicAlbum
  date published: 2023-12-27
album: 透明で不透明な夜の向こうへ (Vocacolle Ver.)
  type: MusicAlbum
  date published: 2024-02-26
album: 命とかどうでもいいよ
  type: MusicAlbum
  date published: 2024-04-24
album: 流星のありか
  type: MusicAlbum
  date published: 2025-02-12
album: ラプス
  type: MusicAlbum
  date published: 2025-02-22