小川 直也 ★ 岩佐 真悠子
type: MusicGroup
genre: anime
popularity: 8
followers: 128
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x250a59466fd1854093076124561411d1b0ec3b885002118f763f08ec21fc4a82
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953875
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953875
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/088573c2-5f8a-4e6c-8bce-5b08f35585d1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/088573c2-5f8a-4e6c-8bce-5b08f35585d1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/088573c2-5f8a-4e6c-8bce-5b08f35585d1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:12:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x250a59466fd1854093076124561411d1b0ec3b885002118f763f08ec21fc4a82","name":"小川 直也 ★ 岩佐 真悠子","registered_at":"2026-06-15T16:29:23Z","symbol":"NIM0765865","token_address":"0xf9ca4d35993b161caecca9365ef08e0bc3bf39ed","type":"artist","uuid":"088573c2-5f8a-4e6c-8bce-5b08f35585d1"}
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 0x250a59466fd1854093076124561411d1b0ec3b885002118f763f08ec21fc4a82. Chain 2 (Bitcoin): anchored in block 953875 (2026-06-16T02:12:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/088573c2-5f8a-4e6c-8bce-5b08f35585d1.json and https://artists.proofprofile.net/proofs/artist/088573c2-5f8a-4e6c-8bce-5b08f35585d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:12:46Z
  text: {"copyright_id":"0x250a59466fd1854093076124561411d1b0ec3b885002118f763f08ec21fc4a82","name":"小川 直也 ★ 岩佐 真悠子","registered_at":"2026-06-15T16:29:23Z","symbol":"NIM0765865","token_address":"0xf9ca4d35993b161caecca9365ef08e0bc3bf39ed","type":"artist","uuid":"088573c2-5f8a-4e6c-8bce-5b08f35585d1"}
album: 勝手に侵略者
  type: MusicAlbum
  date published: 2005-06-01
album: 勝手に侵略者
  type: MusicAlbum
  date published: 2006-08-30