Kumi Takahara
type: MusicGroup
genre: ambient
popularity: 12
followers: 1048
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdaa7873ae651e04af151d6f1166cbb8124c2b28893d926563048c682364e7fbf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953730
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953730
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/94fbce5c-ce39-4265-9a13-36354a934e42.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/94fbce5c-ce39-4265-9a13-36354a934e42.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/94fbce5c-ce39-4265-9a13-36354a934e42
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T02:47:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdaa7873ae651e04af151d6f1166cbb8124c2b28893d926563048c682364e7fbf","name":"Kumi Takahara","registered_at":"2026-06-14T20:02:58Z","symbol":"NIM0561400","token_address":"0x8b715ed7910f4263770487bd0db92490f2a33abd","type":"artist","uuid":"94fbce5c-ce39-4265-9a13-36354a934e42"}
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 0xdaa7873ae651e04af151d6f1166cbb8124c2b28893d926563048c682364e7fbf. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94fbce5c-ce39-4265-9a13-36354a934e42.json and https://artists.proofprofile.net/proofs/artist/94fbce5c-ce39-4265-9a13-36354a934e42.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T02:47:28Z
  text: {"copyright_id":"0xdaa7873ae651e04af151d6f1166cbb8124c2b28893d926563048c682364e7fbf","name":"Kumi Takahara","registered_at":"2026-06-14T20:02:58Z","symbol":"NIM0561400","token_address":"0x8b715ed7910f4263770487bd0db92490f2a33abd","type":"artist","uuid":"94fbce5c-ce39-4265-9a13-36354a934e42"}
album: Tide
  type: MusicAlbum
  date published: 2021-01-06
album: Roll
  type: MusicAlbum
  date published: 2021-01-27
album: Ditty
  type: MusicAlbum
  date published: 2021-02-17
album: See-Through
  type: MusicAlbum
  date published: 2021-02-24
album: Chime (Federico Durand Remix)
  type: MusicAlbum
  date published: 2021-07-28
album: Nostalgia (Vague Imaginaires Remix)
  type: MusicAlbum
  date published: 2021-08-04
album: Kai-Kou (Porya Hatami Remix)
  type: MusicAlbum
  date published: 2021-08-11
album: Sea (Roméo Poirier Rework)
  type: MusicAlbum
  date published: 2021-08-18
album: See-Through Remixes
  type: MusicAlbum
  date published: 2021-08-25
album: The Old Dreams
  type: MusicAlbum
  date published: 2023-11-08
album: The Old Dreams (aus Remix)
  type: MusicAlbum
  date published: 2023-11-22
album: See-Through (Live at Okurayama Memorial Hall)
  type: MusicAlbum
  date published: 2024-04-05