Kotori Koiwai
type: MusicGroup
genre: anime
description: is a Japanese voice actress, lyricist, composer, and singer from Kyoto. Biography Koiwai was born in Kyoto on February 15, 1990. She initially took interest in voice acting after hearing the voice
popularity: 12
followers: 85
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2848c768af8fbbcaff299f12aa5c4e12dac4ddbf88dc0b1b62fa0c4d9312d87d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953704
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953704
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/78d60466-54ee-478d-a1bc-f136b7e21771.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/78d60466-54ee-478d-a1bc-f136b7e21771.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/78d60466-54ee-478d-a1bc-f136b7e21771
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T22:58:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2848c768af8fbbcaff299f12aa5c4e12dac4ddbf88dc0b1b62fa0c4d9312d87d","name":"Kotori Koiwai","registered_at":"2026-06-14T17:11:25Z","symbol":"NIM0520546","token_address":"0xa4564ae3ab4ad74fca80d69800ad3ddd8985d158","type":"artist","uuid":"78d60466-54ee-478d-a1bc-f136b7e21771"}
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 0x2848c768af8fbbcaff299f12aa5c4e12dac4ddbf88dc0b1b62fa0c4d9312d87d. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78d60466-54ee-478d-a1bc-f136b7e21771.json and https://artists.proofprofile.net/proofs/artist/78d60466-54ee-478d-a1bc-f136b7e21771.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T22:58:38Z
  text: {"copyright_id":"0x2848c768af8fbbcaff299f12aa5c4e12dac4ddbf88dc0b1b62fa0c4d9312d87d","name":"Kotori Koiwai","registered_at":"2026-06-14T17:11:25Z","symbol":"NIM0520546","token_address":"0xa4564ae3ab4ad74fca80d69800ad3ddd8985d158","type":"artist","uuid":"78d60466-54ee-478d-a1bc-f136b7e21771"}
album: Nyanpasu Yabure Kabure (Remix)
  type: MusicAlbum
  date published: 2024-12-20
album: Nyanpasu Yabure Kabure (Renge Song)
  type: MusicAlbum
  date published: 2025-01-17
album: Nyanpasu (Renge Song) [Remix]
  type: MusicAlbum
  date published: 2025-01-24
album: Nyanpasu Yabure Kabure (Slowed)
  type: MusicAlbum
  date published: 2025-03-07
album: Inori o Tsurete
  type: MusicAlbum
  date published: 2025-05-14
album: Loli Selling Ice Scream
  type: MusicAlbum
  date published: 2025-08-01