Seiko Sato
type: MusicGroup
genre: city pop
genre: kayokyoku
genre: shibuya-kei
popularity: 14
followers: 1396
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3e49eb17ddd42e1cbdcb3578ef39a371f55f891172047fa101efb61f99844380
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953648
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953648
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/44f70928-57d4-463d-9dd5-befc5847b3d1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/44f70928-57d4-463d-9dd5-befc5847b3d1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/44f70928-57d4-463d-9dd5-befc5847b3d1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T15:20:52Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3e49eb17ddd42e1cbdcb3578ef39a371f55f891172047fa101efb61f99844380","name":"Seiko Sato","registered_at":"2026-06-14T11:38:22Z","symbol":"NIM0441064","token_address":"0x2ffa31c0a3f5cc1f2646f7c016a3b6fd57135c4d","type":"artist","uuid":"44f70928-57d4-463d-9dd5-befc5847b3d1"}
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 0x3e49eb17ddd42e1cbdcb3578ef39a371f55f891172047fa101efb61f99844380. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44f70928-57d4-463d-9dd5-befc5847b3d1.json and https://artists.proofprofile.net/proofs/artist/44f70928-57d4-463d-9dd5-befc5847b3d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T15:20:52Z
  text: {"copyright_id":"0x3e49eb17ddd42e1cbdcb3578ef39a371f55f891172047fa101efb61f99844380","name":"Seiko Sato","registered_at":"2026-06-14T11:38:22Z","symbol":"NIM0441064","token_address":"0x2ffa31c0a3f5cc1f2646f7c016a3b6fd57135c4d","type":"artist","uuid":"44f70928-57d4-463d-9dd5-befc5847b3d1"}
album: Moonlight Wolf
  type: MusicAlbum
  date published: 1992-01-21
album: Bright Lights
  type: MusicAlbum
  date published: 1992-02-21
album: PAIN
  type: MusicAlbum
  date published: 1992-06-19
album: After Blue
  type: MusicAlbum
  date published: 1992-11-20
album: Jasmine
  type: MusicAlbum
  date published: 1993-04-21
album: SEASON
  type: MusicAlbum
  date published: 1993-06-18
album: 空にキスをするように
  type: MusicAlbum
  date published: 1993-11-19
album: Marvelous Act
  type: MusicAlbum
  date published: 1994-01-21
  track: この恋がすべて
    type: MusicRecording
    duration: PT6M41S
    duration ms: 401600
    explicit: false
    by artist: Seiko Sato
    in album: Marvelous Act
      type: MusicAlbum
      date published: 1994-01-21
    genre: city pop
    genre: kayokyoku
    genre: shibuya-kei
    isrc code: JPFL09303550
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T06:00:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3098d3626df9219906e728f3a8f464715b06154c0334ef0b0a07dc6007b753c1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPFL09303550
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 0x3098d3626df9219906e728f3a8f464715b06154c0334ef0b0a07dc6007b753c1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPFL09303550.
      date published: 2026-07-04T11:19:20Z
    audio: この恋がすべて
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 106.878
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.619
      additional property: Energy
        type: PropertyValue
        value: 0.796
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.268
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.127
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.72
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.606
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 一緒にいよう
  type: MusicAlbum
  date published: 1994-04-21
album: さよならがおしえてくれる
  type: MusicAlbum
  date published: 1994-09-21
album: Heartbeats Groove
  type: MusicAlbum
  date published: 1995-02-17
album: VOICE/恋をするなら
  type: MusicAlbum
  date published: 1995-05-19
album: SATELLITE☆S
  type: MusicAlbum
  date published: 1995-06-21
album: PEARL
  type: MusicAlbum
  date published: 1995-10-20
album: CRYSTAL
  type: MusicAlbum
  date published: 1995-11-17
album: 365 Colors Of The Rainbow
  type: MusicAlbum
  date published: 1996-02-21
album: 愛のメロディー
  type: MusicAlbum
  date published: 1997-04-23
album: Windy
  type: MusicAlbum
  date published: 1997-11-01
album: Our Song
  type: MusicAlbum
  date published: 1998-10-21