Yamato Kasai
type: MusicGroup
popularity: 42
followers: 485
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x92581d66353c7da4b09b7a7f171c6619a0496d513ff98155a9749c94004ba630
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/841d5eb7-86dd-4adf-9a19-532c7a5c011a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/841d5eb7-86dd-4adf-9a19-532c7a5c011a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/841d5eb7-86dd-4adf-9a19-532c7a5c011a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x92581d66353c7da4b09b7a7f171c6619a0496d513ff98155a9749c94004ba630","name":"Yamato Kasai","registered_at":"2026-06-12T03:22:19Z","symbol":"NIM0171649","token_address":"0xbb40c1080dd90b8fefd45f23e0117b9f11eb4a3e","type":"artist","uuid":"841d5eb7-86dd-4adf-9a19-532c7a5c011a"}
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 0x92581d66353c7da4b09b7a7f171c6619a0496d513ff98155a9749c94004ba630. 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/841d5eb7-86dd-4adf-9a19-532c7a5c011a.json and https://artists.proofprofile.net/proofs/artist/841d5eb7-86dd-4adf-9a19-532c7a5c011a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0x92581d66353c7da4b09b7a7f171c6619a0496d513ff98155a9749c94004ba630","name":"Yamato Kasai","registered_at":"2026-06-12T03:22:19Z","symbol":"NIM0171649","token_address":"0xbb40c1080dd90b8fefd45f23e0117b9f11eb4a3e","type":"artist","uuid":"841d5eb7-86dd-4adf-9a19-532c7a5c011a"}
album: Rightfully (From "Goblin Slayer")
  type: MusicAlbum
  date published: 2019-01-11
album: Rightfully (From "Goblin Slayer")
  type: MusicAlbum
  date published: 2019-01-11
  track: Rightfully (From "Goblin Slayer")
    type: MusicRecording
    duration: PT3M31S
    duration ms: 211524
    explicit: false
    by artist: Yamato Kasai
    in album: Rightfully (From "Goblin Slayer")
      type: MusicAlbum
      date published: 2019-01-11
    isrc code: QZ22B2050045
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T15:14:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x111a7b64ab5079924e1505c0f6e7c92fb4abaddb4f4efc7f6e8eb0b9b3dda6f1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958571
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958571
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2050045
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T15:39:25Z
    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 0x111a7b64ab5079924e1505c0f6e7c92fb4abaddb4f4efc7f6e8eb0b9b3dda6f1. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZ22B2050045.
      date published: 2026-07-18T15:39:25Z
    audio: Rightfully (From "Goblin Slayer")
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 182.374
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.428
      additional property: Energy
        type: PropertyValue
        value: 0.531
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.288
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.339
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.374
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.612
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor