ズナ
type: MusicGroup
genre: vocaloid
popularity: 5
followers: 96
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf77e9a4f6d3b12740563fd37977c26b1a9747b9b539847a053bf9d7ea240cf76
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/5aafdbd2-d642-4d3b-84b7-1b103c0e8bef.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5aafdbd2-d642-4d3b-84b7-1b103c0e8bef.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5aafdbd2-d642-4d3b-84b7-1b103c0e8bef
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf77e9a4f6d3b12740563fd37977c26b1a9747b9b539847a053bf9d7ea240cf76","name":"ズナ","registered_at":"2026-06-16T21:31:55Z","symbol":"NIM1181744","token_address":"0xc5dc68f13ea6af77ec6ea9cba409c0ebedc43c59","type":"artist","uuid":"5aafdbd2-d642-4d3b-84b7-1b103c0e8bef"}
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 0xf77e9a4f6d3b12740563fd37977c26b1a9747b9b539847a053bf9d7ea240cf76. 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/5aafdbd2-d642-4d3b-84b7-1b103c0e8bef.json and https://artists.proofprofile.net/proofs/artist/5aafdbd2-d642-4d3b-84b7-1b103c0e8bef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xf77e9a4f6d3b12740563fd37977c26b1a9747b9b539847a053bf9d7ea240cf76","name":"ズナ","registered_at":"2026-06-16T21:31:55Z","symbol":"NIM1181744","token_address":"0xc5dc68f13ea6af77ec6ea9cba409c0ebedc43c59","type":"artist","uuid":"5aafdbd2-d642-4d3b-84b7-1b103c0e8bef"}
album: Dawn
  type: MusicAlbum
  date published: 2023-10-26
album: 立つ鳥
  type: MusicAlbum
  date published: 2023-10-26
album: 其の後
  type: MusicAlbum
  date published: 2023-10-26
album: Sister feat. 初音ミク
  type: MusicAlbum
  date published: 2024-01-24
album: Live Under the Clouds feat. 初音ミク
  type: MusicAlbum
  date published: 2024-06-20
album: My Memories
  type: MusicAlbum
  date published: 2024-06-20
album: SUPER STAR
  type: MusicAlbum
  date published: 2024-08-09
album: 水深3メートル
  type: MusicAlbum
  date published: 2024-10-01
album: サイレント・レゾナンス
  type: MusicAlbum
  date published: 2025-01-21
  track: サイレント・レゾナンス
    type: MusicRecording
    duration: PT2M5S
    duration ms: 125496
    explicit: false
    by artist: ズナ
    in album: サイレント・レゾナンス
      type: MusicAlbum
      date published: 2025-01-21
    genre: vocaloid
    isrc code: JPW462503328
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T12:08:12+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa37c7c91f3dfb9a0a7d6e6bafeef596bea82db63cf469da316b416659c762e04
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958547
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958547
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462503328
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T12:44:05Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xa37c7c91f3dfb9a0a7d6e6bafeef596bea82db63cf469da316b416659c762e04. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462503328.
      date published: 2026-07-18T12:44:05Z
    audio: サイレント・レゾナンス
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 131.012
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.716
      additional property: Energy
        type: PropertyValue
        value: 0.555
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.58
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.63
      additional property: Liveness
        type: PropertyValue
        value: 0.077
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.512
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.485
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 凪ぎ、渡れ
  type: MusicAlbum
  date published: 2025-02-04
album: ジャンクション feat. 初音ミク
  type: MusicAlbum
  date published: 2025-03-06
album: あこがれのひと
  type: MusicAlbum
  date published: 2025-03-25
album: 勤務記録 : No.666
  type: MusicAlbum
  date published: 2025-04-01
album: ここは誰かの未踏の地
  type: MusicAlbum
  date published: 2025-05-02
album: Pause
  type: MusicAlbum
  date published: 2025-05-07
album: 投影
  type: MusicAlbum
  date published: 2025-05-20
album: LONELY TIME
  type: MusicAlbum
  date published: 2025-06-02
album: おかしな夢
  type: MusicAlbum
  date published: 2025-06-27
album: OCEAN WAS DARK
  type: MusicAlbum
  date published: 2025-07-30