NANKINI!
type: MusicGroup
popularity: 10
followers: 3713
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x83a5c9f37fd2cd604f1a1896e183adba2e7070d68537c5692b79f978a4580e29
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/82830738-abc3-4069-919c-6cb1d2f7155f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/82830738-abc3-4069-919c-6cb1d2f7155f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/82830738-abc3-4069-919c-6cb1d2f7155f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
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 0x83a5c9f37fd2cd604f1a1896e183adba2e7070d68537c5692b79f978a4580e29. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82830738-abc3-4069-919c-6cb1d2f7155f.json and https://artists.proofprofile.net/proofs/artist/82830738-abc3-4069-919c-6cb1d2f7155f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
album: ぼくの窓に、きみの風が吹く。
  type: MusicAlbum
  date published: 2018-12-03
album: なないろダイアリー
  type: MusicAlbum
  date published: 2019-12-18
album: なないろダイアリー／トマドイオーバーチュア
  type: MusicAlbum
  date published: 2020-01-29
album: はじめて君を好きになった日
  type: MusicAlbum
  date published: 2021-01-01
album: 聖なる夜のシンデレラ
  type: MusicAlbum
  date published: 2021-11-17
album: Seinaru Yoruno Cinderella
  type: MusicAlbum
  date published: 2021-11-17
album: 僕を未来へ運ぶ列車 -TV size-
  type: MusicAlbum
  date published: 2022-01-05
album: Boku o Mirai e Hakobu Ressha -TV size-
  type: MusicAlbum
  date published: 2022-01-05
album: AOHARU -TV size-
  type: MusicAlbum
  date published: 2022-02-02
album: Dreamer -TV size-
  type: MusicAlbum
  date published: 2022-03-09
album: Growing!! - Bonus Track ver.
  type: MusicAlbum
  date published: 2022-03-23
album: Growing!! - Bonus Track ver.
  type: MusicAlbum
  date published: 2022-03-23
album: JUMP! -TV size-
  type: MusicAlbum
  date published: 2022-08-10
album: JUMP! -TV size-
  type: MusicAlbum
  date published: 2022-08-10
album: 君とサイダー -TV size-
  type: MusicAlbum
  date published: 2022-09-14
album: KIMITO CIDER -TV size-
  type: MusicAlbum
  date published: 2022-09-14
album: 君とサイダー
  type: MusicAlbum
  date published: 2022-10-19
  track: 君とサイダー
    type: MusicRecording
    duration: PT4M19S
    duration ms: 259746
    explicit: false
    by artist: NANKINI!
    in album: 君とサイダー
      type: MusicAlbum
      date published: 2022-10-19
    isrc code: JPVI02202940
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T01:27:39+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x56b1056337671bf45585a4984f6b2fb7bf2a7e2220a3b10f1245d52539c12ef9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958808
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958808
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02202940
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T02:49:15Z
    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 0x56b1056337671bf45585a4984f6b2fb7bf2a7e2220a3b10f1245d52539c12ef9. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPVI02202940.
      date published: 2026-07-20T02:49:15Z
    audio: 君とサイダー
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 151.965
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.525
      additional property: Energy
        type: PropertyValue
        value: 0.894
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.072
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.335
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.755
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.153
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: KIMITO CIDER
  type: MusicAlbum
  date published: 2022-10-19
album: JUMP! / KIMITO CIDER (SPECIAL EDITION)
  type: MusicAlbum
  date published: 2022-10-26
album: JUMP!／君とサイダー (SPECIAL EDITION)
  type: MusicAlbum
  date published: 2022-10-26
album: Hatsukoi Christmas - TV size -
  type: MusicAlbum
  date published: 2022-12-21
album: 初恋クリスマス - TV size -
  type: MusicAlbum
  date published: 2022-12-21
album: らびゅっ！ -TV size-
  type: MusicAlbum
  date published: 2023-05-24
album: LoveU! -TV size-
  type: MusicAlbum
  date published: 2023-05-24
album: らびゅっ！
  type: MusicAlbum
  date published: 2023-06-30
album: LoveU!
  type: MusicAlbum
  date published: 2023-06-30