kurousagi
type: MusicGroup
genre: vocaloid
popularity: 21
followers: 651
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x892f8dfe66c61fe345f71f10144134039683949d0acf899c1c6965e6bfb0987e
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/e2599e32-3b2d-4a48-bcd6-0b74e2843016.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e2599e32-3b2d-4a48-bcd6-0b74e2843016.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e2599e32-3b2d-4a48-bcd6-0b74e2843016
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
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 0x892f8dfe66c61fe345f71f10144134039683949d0acf899c1c6965e6bfb0987e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2599e32-3b2d-4a48-bcd6-0b74e2843016.json and https://artists.proofprofile.net/proofs/artist/e2599e32-3b2d-4a48-bcd6-0b74e2843016.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
album: I am a child
  type: MusicAlbum
  date published: 2021-07-31
album: Rainy Town
  type: MusicAlbum
  date published: 2021-07-31
album: Miku
  type: MusicAlbum
  date published: 2021-07-31
  track: Miku
    type: MusicRecording
    duration: PT1M26S
    duration ms: 86000
    explicit: false
    by artist: kurousagi
    in album: Miku
      type: MusicAlbum
      date published: 2021-07-31
    genre: vocaloid
    isrc code: TCJPP2135365
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T20:06:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2dfeb18753757328a96b65c28138f21f9c154763259cc1c416e95a97be94a76b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958455
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958455
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPP2135365
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T21:28:36Z
    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 0x2dfeb18753757328a96b65c28138f21f9c154763259cc1c416e95a97be94a76b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCJPP2135365.
      date published: 2026-07-17T21:28:36Z
    audio: Miku
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.881
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.721
      additional property: Energy
        type: PropertyValue
        value: 0.473
      additional property: Speechiness
        type: PropertyValue
        value: 0.054
      additional property: Acousticness
        type: PropertyValue
        value: 0.306
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.506
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.5
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.216
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Last order
  type: MusicAlbum
  date published: 2021-07-31
album: Enemy X
  type: MusicAlbum
  date published: 2021-07-31
album: Terminal Care
  type: MusicAlbum
  date published: 2021-07-31
album: Hide and seek
  type: MusicAlbum
  date published: 2021-07-31
album: lol
  type: MusicAlbum
  date published: 2021-07-31
album: fragment
  type: MusicAlbum
  date published: 2021-07-31
album: Unnamed folder
  type: MusicAlbum
  date published: 2021-07-31
album: Qualia
  type: MusicAlbum
  date published: 2021-07-31
album: Log out
  type: MusicAlbum
  date published: 2021-07-31
album: It was all just a dream!
  type: MusicAlbum
  date published: 2024-09-07
album: May I?
  type: MusicAlbum
  date published: 2024-12-15
album: Hex
  type: MusicAlbum
  date published: 2025-03-21
album: GOAT!
  type: MusicAlbum
  date published: 2025-07-30
album: Lonely Cure
  type: MusicAlbum
  date published: 2025-09-10
album: Apophenia
  type: MusicAlbum
  date published: 2025-10-27