かしこ。
type: MusicGroup
genre: vocaloid
popularity: 10
followers: 878
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4c4f652c6117c4c9cdef5deb0a056f20eb3197060b55e76c220c56e42cf0d5ee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953871
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953871
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06fdeccb-bc86-4184-9573-d2f31e23c3a3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06fdeccb-bc86-4184-9573-d2f31e23c3a3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/06fdeccb-bc86-4184-9573-d2f31e23c3a3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:46:03Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4c4f652c6117c4c9cdef5deb0a056f20eb3197060b55e76c220c56e42cf0d5ee","name":"かしこ。","registered_at":"2026-06-15T16:11:17Z","symbol":"NIM0761542","token_address":"0x9f4fccd63a547bed55a575814dc21b4b97728b12","type":"artist","uuid":"06fdeccb-bc86-4184-9573-d2f31e23c3a3"}
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 0x4c4f652c6117c4c9cdef5deb0a056f20eb3197060b55e76c220c56e42cf0d5ee. Chain 2 (Bitcoin): anchored in block 953871 (2026-06-16T01:46:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06fdeccb-bc86-4184-9573-d2f31e23c3a3.json and https://artists.proofprofile.net/proofs/artist/06fdeccb-bc86-4184-9573-d2f31e23c3a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:46:03Z
  text: {"copyright_id":"0x4c4f652c6117c4c9cdef5deb0a056f20eb3197060b55e76c220c56e42cf0d5ee","name":"かしこ。","registered_at":"2026-06-15T16:11:17Z","symbol":"NIM0761542","token_address":"0x9f4fccd63a547bed55a575814dc21b4b97728b12","type":"artist","uuid":"06fdeccb-bc86-4184-9573-d2f31e23c3a3"}
album: 溺れる魚
  type: MusicAlbum
  date published: 2015
album: エコヒイキ
  type: MusicAlbum
  date published: 2016
album: 東京少女微熱
  type: MusicAlbum
  date published: 2016
album: 天文学
  type: MusicAlbum
  date published: 2020-08-21
album: プラリネ
  type: MusicAlbum
  date published: 2020-08-21
  track: プラリネ
    type: MusicRecording
    duration: PT3M57S
    duration ms: 237250
    explicit: false
    by artist: かしこ。
    in album: プラリネ
      type: MusicAlbum
      date published: 2020-08-21
    genre: vocaloid
    isrc code: JPE562006598
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T01:53:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2580a844c162d0aaf40492addc43c0466ac967e39fae572df9050cced3b1347b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958228
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958228
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE562006598
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T02:46:47Z
    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 0x2580a844c162d0aaf40492addc43c0466ac967e39fae572df9050cced3b1347b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPE562006598.
      date published: 2026-07-16T02:46:47Z
    audio: プラリネ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 130.971
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.559
      additional property: Energy
        type: PropertyValue
        value: 0.915
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.02
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.432
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.578
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.113
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Appetizer
  type: MusicAlbum
  date published: 2020-08-27
album: blanc.
  type: MusicAlbum
  date published: 2023-03-19
album: blanc.
  type: MusicAlbum
  date published: 2023-03-19
album: Cranberry Drama
  type: MusicAlbum
  date published: 2024-02-23
album: シトレアエ
  type: MusicAlbum
  date published: 2025-02-19
album: Citreae
  type: MusicAlbum
  date published: 2025-02-19
album: 春の化身
  type: MusicAlbum
  date published: 2025-04-02
album: 藍色アイロニ
  type: MusicAlbum
  date published: 2025-04-02
album: 89
  type: MusicAlbum
  date published: 2025-04-09
album: Replica
  type: MusicAlbum
  date published: 2025-07-09