ユキ(CV:花澤香菜)
type: MusicGroup
popularity: 9
followers: 402
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd1edb71397b06b5866dd021f3d7801d7200f74e1a5d5d04c9cab4b19741039ae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4d64ee8c-ca84-41ee-925f-6421e8007e8a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4d64ee8c-ca84-41ee-925f-6421e8007e8a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4d64ee8c-ca84-41ee-925f-6421e8007e8a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd1edb71397b06b5866dd021f3d7801d7200f74e1a5d5d04c9cab4b19741039ae","name":"ユキ(CV:花澤香菜)","registered_at":"2026-06-16T16:32:08Z","symbol":"NIM1110208","token_address":"0xc2765afce1cd939d40729f1cee22d52a2f025405","type":"artist","uuid":"4d64ee8c-ca84-41ee-925f-6421e8007e8a"}
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 0xd1edb71397b06b5866dd021f3d7801d7200f74e1a5d5d04c9cab4b19741039ae. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d64ee8c-ca84-41ee-925f-6421e8007e8a.json and https://artists.proofprofile.net/proofs/artist/4d64ee8c-ca84-41ee-925f-6421e8007e8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xd1edb71397b06b5866dd021f3d7801d7200f74e1a5d5d04c9cab4b19741039ae","name":"ユキ(CV:花澤香菜)","registered_at":"2026-06-16T16:32:08Z","symbol":"NIM1110208","token_address":"0xc2765afce1cd939d40729f1cee22d52a2f025405","type":"artist","uuid":"4d64ee8c-ca84-41ee-925f-6421e8007e8a"}
album: 「Swallowtail Butterfly ～あいのうた～」from 消滅都市 -TV size-
  type: MusicAlbum
  date published: 2019-04-08
album: 「Hello, Again ～昔からある場所～」from消滅都市 -TV size-
  type: MusicAlbum
  date published: 2019-05-27
album: TVアニメ「消滅都市」ユキ(CV:花澤香菜)カバーソングシングル
  type: MusicAlbum
  date published: 2019-06-05
  track: 「Swallowtail Butterfly ～あいのうた～」from 消滅都市
    type: MusicRecording
    duration: PT4M48S
    duration ms: 288840
    explicit: false
    by artist: ユキ(CV:花澤香菜)
    in album: TVアニメ「消滅都市」ユキ(CV:花澤香菜)カバーソングシングル
      type: MusicAlbum
      date published: 2019-06-05
    isrc code: JPPC01802704
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T23:27:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf7246d8de821bb6abf09d3731774c564ecd9c71ab244729256f6e77c0ee43444
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958468
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958468
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC01802704
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T00:27:51Z
    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 0xf7246d8de821bb6abf09d3731774c564ecd9c71ab244729256f6e77c0ee43444. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPPC01802704.
      date published: 2026-07-18T00:27:51Z
    audio: 「Swallowtail Butterfly ～あいのうた～」from 消滅都市
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 75.011
      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: 0.672
      additional property: Energy
        type: PropertyValue
        value: 0.567
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.286
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.333
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.334
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major