Lunachu
type: MusicGroup
genre: vocaloid
popularity: 4
followers: 1159
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x685ff8273abc47ee35ba92472fe79f1f02268e6fb4dcbc724b33f09e62730ebd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953947
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953947
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/23416b43-8e5e-42a8-a563-4ce06c92b0df.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/23416b43-8e5e-42a8-a563-4ce06c92b0df.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/23416b43-8e5e-42a8-a563-4ce06c92b0df
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:14:26Z
additional property: OTSCanonicalRecord
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 0x685ff8273abc47ee35ba92472fe79f1f02268e6fb4dcbc724b33f09e62730ebd. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23416b43-8e5e-42a8-a563-4ce06c92b0df.json and https://artists.proofprofile.net/proofs/artist/23416b43-8e5e-42a8-a563-4ce06c92b0df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
album: Silent rain
  type: MusicAlbum
  date published: 2010-12-10
album: ソノ雨ハ音モ無ク
  type: MusicAlbum
  date published: 2010-12-10
album: ai
  type: MusicAlbum
  date published: 2010-12-10
album: ai
  type: MusicAlbum
  date published: 2010-12-10
album: chocolatiere
  type: MusicAlbum
  date published: 2011-03-02
album: chocolatiere
  type: MusicAlbum
  date published: 2011-03-02
album: Queen of Lollipop
  type: MusicAlbum
  date published: 2013-07-31
  track: 禁断少女プラスA
    type: MusicRecording
    duration: PT3M51S
    duration ms: 231687
    explicit: false
    by artist: Lunachu
    in album: Queen of Lollipop
      type: MusicAlbum
      date published: 2013-07-31
    genre: vocaloid
    isrc code: JPE561301802
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T20:25:19+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0eda43edb341025a075483339c2b7bb7480dffecdc07158110952c0ba7a9ebfc
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958779
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958779
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE561301802
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T21:08:39Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eda43edb341025a075483339c2b7bb7480dffecdc07158110952c0ba7a9ebfc. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/JPE561301802.
      date published: 2026-07-19T21:08:39Z
    audio: 禁断少女プラスA
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 103.028
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.512
      additional property: Energy
        type: PropertyValue
        value: 0.934
      additional property: Speechiness
        type: PropertyValue
        value: 0.057
      additional property: Acousticness
        type: PropertyValue
        value: 0.003
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.175
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.377
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.011
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Queen of Lollipop
  type: MusicAlbum
  date published: 2013-07-31
album: Princess of Lollipop
  type: MusicAlbum
  date published: 2014-09-29
album: Princess of Lollipop
  type: MusicAlbum
  date published: 2014-09-29
album: コズミックラバーズ
  type: MusicAlbum
  date published: 2015-12-18
album: Angel of Lollipop
  type: MusicAlbum
  date published: 2017-10-11
album: ワールドエンドホリック
  type: MusicAlbum
  date published: 2018-10-17
album: パラレルシフトディストーション/コスモライト
  type: MusicAlbum
  date published: 2020-08-27
album: ヒメコイ
  type: MusicAlbum
  date published: 2021-12-24
album: ラブマギカシグナ
  type: MusicAlbum
  date published: 2022-12-26
album: 魅魅魅
  type: MusicAlbum
  date published: 2022-12-26