小泉花陽(CV.久保ユリカ)
type: MusicGroup
popularity: 26
followers: 8385
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x90e42c1a19f9e49dd1d487bad5e625de2d26029d45ad42348ebe85439d7c35b5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bf786cd9-4261-4bf8-8a61-b9ba2d5e3e42.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bf786cd9-4261-4bf8-8a61-b9ba2d5e3e42.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bf786cd9-4261-4bf8-8a61-b9ba2d5e3e42
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x90e42c1a19f9e49dd1d487bad5e625de2d26029d45ad42348ebe85439d7c35b5","name":"小泉花陽(CV.久保ユリカ)","registered_at":"2026-06-12T08:45:55Z","symbol":"NIM0246329","token_address":"0x9cd6ffce8c9650619fe7eff838b5e4a930df0b8e","type":"artist","uuid":"bf786cd9-4261-4bf8-8a61-b9ba2d5e3e42"}
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 0x90e42c1a19f9e49dd1d487bad5e625de2d26029d45ad42348ebe85439d7c35b5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf786cd9-4261-4bf8-8a61-b9ba2d5e3e42.json and https://artists.proofprofile.net/proofs/artist/bf786cd9-4261-4bf8-8a61-b9ba2d5e3e42.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x90e42c1a19f9e49dd1d487bad5e625de2d26029d45ad42348ebe85439d7c35b5","name":"小泉花陽(CV.久保ユリカ)","registered_at":"2026-06-12T08:45:55Z","symbol":"NIM0246329","token_address":"0x9cd6ffce8c9650619fe7eff838b5e4a930df0b8e","type":"artist","uuid":"bf786cd9-4261-4bf8-8a61-b9ba2d5e3e42"}
album: ラブライブ！ Solo Live! Collection from μ's 小泉花陽 あなただけの太陽になりたい
  type: MusicAlbum
  date published: 2012-02-19
  track: 夏色えがおで1,2,Jump! - HANAYO Mix
    type: MusicRecording
    duration: PT4M28S
    duration ms: 268613
    explicit: false
    by artist: 小泉花陽(CV.久保ユリカ)
    in album: ラブライブ！ Solo Live! Collection from μ's 小泉花陽 あなただけの太陽になりたい
      type: MusicAlbum
      date published: 2012-02-19
    isrc code: JPI101200196
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T06:54:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2b0b9f474502910d2ae7f99e3b15315e8d6de2b3c70a35a7156a160b892a9248
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958690
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958690
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101200196
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T07:14:39Z
    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 0x2b0b9f474502910d2ae7f99e3b15315e8d6de2b3c70a35a7156a160b892a9248. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPI101200196.
      date published: 2026-07-19T07:14:39Z
    audio: 夏色えがおで1,2,Jump! - HANAYO Mix
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 170.035
      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: 0.427
      additional property: Energy
        type: PropertyValue
        value: 0.936
      additional property: Speechiness
        type: PropertyValue
        value: 0.051
      additional property: Acousticness
        type: PropertyValue
        value: 0.043
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.34
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.756
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.263
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: ラブライブ！ Solo Live! Collection from μ's 小泉花陽 あなただけの太陽になりたい
  type: MusicAlbum
  date published: 2012-02-19
album: ラブライブ!Solo Live! collection Memories with Hanayo
  type: MusicAlbum
  date published: 2018-03-28
album: ラブライブ!Solo Live! from μ's 小泉花陽 Extra
  type: MusicAlbum
  date published: 2020-09-09