RAKURA
type: MusicGroup
genre: j-r&b
description: Rakura, (birth name , born January 26, 2003, in Japan, is a Japanese pop and R&B singer-songwriter, who made major debut in 2020 and is currently signed under Asistobe label, subsidiaries of B Zone.
popularity: 13
followers: 6821
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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  value: 2026-06-14T21:49:28Z
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 0xb082a08147978ebdacd11712b53ddbee020044e083edf5322864297f4a1fb8e0. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5da60458-8b72-49bd-8351-4731a6ada34d.json and https://artists.proofprofile.net/proofs/artist/5da60458-8b72-49bd-8351-4731a6ada34d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:49:28Z
album: Unforgiven
  type: MusicAlbum
  date published: 2020-11-04
album: Unforgiven
  type: MusicAlbum
  date published: 2020-11-04
album: We Fallin'
  type: MusicAlbum
  date published: 2021-01-28
album: We Fallin'
  type: MusicAlbum
  date published: 2021-01-28
album: In me
  type: MusicAlbum
  date published: 2021-04-15
album: In me
  type: MusicAlbum
  date published: 2021-04-15
album: Runaway -English Ver.-
  type: MusicAlbum
  date published: 2021-05-27
album: Teenage-Dream -English Ver.-
  type: MusicAlbum
  date published: 2021-06-17
album: Teenage-Dream -English Ver.-
  type: MusicAlbum
  date published: 2021-06-17
album: Jewel in the Crown -English Ver.-
  type: MusicAlbum
  date published: 2021-07-08
album: Jewel in the Crown -English Ver.-
  type: MusicAlbum
  date published: 2021-07-08
album: Time will tell
  type: MusicAlbum
  date published: 2021-07-29
album: Time will tell
  type: MusicAlbum
  date published: 2021-07-29
album: Orange soda
  type: MusicAlbum
  date published: 2021-10-14
album: Orange soda
  type: MusicAlbum
  date published: 2021-10-14
album: Shinjuku no Nekomae
  type: MusicAlbum
  date published: 2022-01-26
album: tint
  type: MusicAlbum
  date published: 2022-04-05
  track: Teenage-Dream
    type: MusicRecording
    duration: PT2M39S
    duration ms: 159752
    explicit: false
    by artist: RAKURA
    in album: tint
      type: MusicAlbum
      date published: 2022-04-05
    genre: j-r&b
    isrc code: JPC402103002
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      type: PropertyValue
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC402103002
    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 0x16e50ac897f0bb850ee063d88c5a78e050e9c9bd095e19a43fba75453e3b8eb2. 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/JPC402103002.
      date published: 2026-07-04T14:03:39Z
    audio: Teenage-Dream
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 97.918
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.717
      additional property: Energy
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        value: 0.732
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.157
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.05
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.795
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.782
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Outlook Feat. さなり
  type: MusicAlbum
  date published: 2023-01-27
album: Night haze
  type: MusicAlbum
  date published: 2023-03-17
album: Night haze
  type: MusicAlbum
  date published: 2023-03-17
album: また夜になる前に feat.Tok10
  type: MusicAlbum
  date published: 2023-05-19
album: Smashing Time
  type: MusicAlbum
  date published: 2023-09-08
album: Weekend Dance
  type: MusicAlbum
  date published: 2023-12-01