Tsukasa Seto
type: MusicGroup
popularity: 3
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x327ab766f9cdae90502beaeb62661344c8e67d7c43ee0ee4c88fdd9dc6c94d3f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954028
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954028
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a20da68-96a7-4dd1-a217-f9d3b99adfdb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a20da68-96a7-4dd1-a217-f9d3b99adfdb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3a20da68-96a7-4dd1-a217-f9d3b99adfdb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:08:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x327ab766f9cdae90502beaeb62661344c8e67d7c43ee0ee4c88fdd9dc6c94d3f","name":"Tsukasa Seto","registered_at":"2026-06-16T09:51:17Z","symbol":"NIM1014579","token_address":"0xa42218bb924260291cea4172224bfefbf7275351","type":"artist","uuid":"3a20da68-96a7-4dd1-a217-f9d3b99adfdb"}
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 0x327ab766f9cdae90502beaeb62661344c8e67d7c43ee0ee4c88fdd9dc6c94d3f. Chain 2 (Bitcoin): anchored in block 954028 (2026-06-17T01:08:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a20da68-96a7-4dd1-a217-f9d3b99adfdb.json and https://artists.proofprofile.net/proofs/artist/3a20da68-96a7-4dd1-a217-f9d3b99adfdb.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T01:08:06Z
  text: {"copyright_id":"0x327ab766f9cdae90502beaeb62661344c8e67d7c43ee0ee4c88fdd9dc6c94d3f","name":"Tsukasa Seto","registered_at":"2026-06-16T09:51:17Z","symbol":"NIM1014579","token_address":"0xa42218bb924260291cea4172224bfefbf7275351","type":"artist","uuid":"3a20da68-96a7-4dd1-a217-f9d3b99adfdb"}
album: Shinkaiseibutsu Ni Naritakute
  type: MusicAlbum
  date published: 2025-06-05
  track: Shinkaiseibutsu Ni Naritakute
    type: MusicRecording
    duration: PT3M2S
    duration ms: 182022
    explicit: false
    by artist: Tsukasa Seto
    in album: Shinkaiseibutsu Ni Naritakute
      type: MusicAlbum
      date published: 2025-06-05
    isrc code: TCJPH2575908
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9a0fdd2bb84899fef68fad4396b1c4aa25ae3b17470b61fe6e8350f6336df793
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958384
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958384
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPH2575908
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T08:27:02Z
    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 0x9a0fdd2bb84899fef68fad4396b1c4aa25ae3b17470b61fe6e8350f6336df793. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPH2575908 — a six-check JSON result.
      date published: 2026-07-17T08:27:02Z
    audio: Shinkaiseibutsu Ni Naritakute
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 89.023
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.688
      additional property: Energy
        type: PropertyValue
        value: 0.714
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.107
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.241
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.293
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.066
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor