nitona
type: MusicGroup
genre: vocaloid
popularity: 3
followers: 47
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7d243a57c3498e53136ef85d856aee45b23942a8e7f962615a9ce16ca22832b1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fba2b8b0-e7f9-4f3f-94d0-2cfb92fe8e0b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fba2b8b0-e7f9-4f3f-94d0-2cfb92fe8e0b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fba2b8b0-e7f9-4f3f-94d0-2cfb92fe8e0b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
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 0x7d243a57c3498e53136ef85d856aee45b23942a8e7f962615a9ce16ca22832b1. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fba2b8b0-e7f9-4f3f-94d0-2cfb92fe8e0b.json and https://artists.proofprofile.net/proofs/artist/fba2b8b0-e7f9-4f3f-94d0-2cfb92fe8e0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:16:07Z
album: 魔法使いによる実験レポート
  type: MusicAlbum
  date published: 2017-11-18
album: ΩΩΩΩΩ
  type: MusicAlbum
  date published: 2022-03-02
album: 俯瞰状線
  type: MusicAlbum
  date published: 2022-07-30
album: veritable pandemonium.ep
  type: MusicAlbum
  date published: 2022-09-22
album: 脳メ?_詩
  type: MusicAlbum
  date published: 2023-08-28
album: サマーエンド改
  type: MusicAlbum
  date published: 2023-09-02
album: ここ数年作ったデーターが消えました
  type: MusicAlbum
  date published: 2024-01-19
album: into the out Lubbers #2
  type: MusicAlbum
  date published: 2024-02-27
  track: Girls lover
    type: MusicRecording
    duration: PT5M30S
    duration ms: 330000
    explicit: false
    by artist: nitona
    in album: into the out Lubbers #2
      type: MusicAlbum
      date published: 2024-02-27
    genre: vocaloid
    isrc code: JP92N2410463
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T04:18:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe4c8c2cf331d921c91847487f7d6eb130deeac0ae60b2617167f30b6b4737f77
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956656
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956656
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2410463
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T14:03:39Z
    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 0xe4c8c2cf331d921c91847487f7d6eb130deeac0ae60b2617167f30b6b4737f77. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JP92N2410463.
      date published: 2026-07-04T14:03:39Z
    audio: Girls lover
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 135.062
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.317
      additional property: Energy
        type: PropertyValue
        value: 0.762
      additional property: Speechiness
        type: PropertyValue
        value: 0.05
      additional property: Acousticness
        type: PropertyValue
        value: 0.007
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.227
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.352
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.009
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: nitona′s archive
  type: MusicAlbum
  date published: 2024-05-23
album: ドーナツインザヴォイド
  type: MusicAlbum
  date published: 2024-07-08
album: Game-boy season is over
  type: MusicAlbum
  date published: 2024-12-01
album: Polygon computer’s world (回避)
  type: MusicAlbum
  date published: 2024-12-02
album: Polygon Doppelganger
  type: MusicAlbum
  date published: 2024-12-02