Shizuha Kocho(CV:Mikoi Sasaki)
type: MusicGroup
popularity: 2
followers: 20
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf3951c375a2c7b824b29c09c718deca8d49fa279126b2dcc2b080e367d87247e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a6a681e8-0270-4d02-95c8-1872763a13d2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a6a681e8-0270-4d02-95c8-1872763a13d2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a6a681e8-0270-4d02-95c8-1872763a13d2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf3951c375a2c7b824b29c09c718deca8d49fa279126b2dcc2b080e367d87247e","name":"Shizuha Kocho(CV:Mikoi Sasaki)","registered_at":"2026-06-20T07:57:51Z","symbol":"NIM1558357","token_address":"0x64620f5f8a444e5363d4ef53a24f4513a27f991f","type":"artist","uuid":"a6a681e8-0270-4d02-95c8-1872763a13d2"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3951c375a2c7b824b29c09c718deca8d49fa279126b2dcc2b080e367d87247e. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6a681e8-0270-4d02-95c8-1872763a13d2.json and https://artists.proofprofile.net/proofs/artist/a6a681e8-0270-4d02-95c8-1872763a13d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xf3951c375a2c7b824b29c09c718deca8d49fa279126b2dcc2b080e367d87247e","name":"Shizuha Kocho(CV:Mikoi Sasaki)","registered_at":"2026-06-20T07:57:51Z","symbol":"NIM1558357","token_address":"0x64620f5f8a444e5363d4ef53a24f4513a27f991f","type":"artist","uuid":"a6a681e8-0270-4d02-95c8-1872763a13d2"}
track: Yami o Terasumono
  type: MusicRecording
  duration: PT5M11S
  duration ms: 311413
  explicit: false
  by artist: Aruru Otuski(CV:Megumi Han)
  by artist: Misora Kano(CV:Ayana Taketatsu)
  by artist: Tsukasa Ebisu(CV:Emiri Kato)
  by artist: Shizuha Kocho(CV:Mikoi Sasaki)
  by artist: Larafin Nonomiya(CV:Miyu Tomita)
  in album: "Shojo Kageki Revuestarlight" Revue Album "Arcana Arcadia"
    type: MusicAlbum
    date published: 2022-09-21
  isrc code: JPPC02110997
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-28T01:09:40+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2fc1d42deafe3c2124ff063a21fb1b58c688447636a5687ac4f8776e7b2b2289
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956375
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956375
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02110997
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T16:51:38Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc1d42deafe3c2124ff063a21fb1b58c688447636a5687ac4f8776e7b2b2289. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPC02110997.
    date published: 2026-07-02T16:51:38Z
  audio: Yami o Terasumono
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 176.222
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.263
    additional property: Energy
      type: PropertyValue
      value: 0.608
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.49
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.094
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.336
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.013
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Minor