三面相
type: MusicGroup
genre: vocaloid
popularity: 7
followers: 50
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x90b419569d4cad5b4275ba1786cda2c5cf9514e1a19951d1871281f955b240f3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e8cc582e-155d-4aea-943e-293612582ded.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e8cc582e-155d-4aea-943e-293612582ded.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e8cc582e-155d-4aea-943e-293612582ded
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x90b419569d4cad5b4275ba1786cda2c5cf9514e1a19951d1871281f955b240f3","name":"三面相","registered_at":"2026-06-21T09:25:07Z","symbol":"NIM1887864","token_address":"0x10aa57156c57361f618d97a4849825bf1d41d19a","type":"artist","uuid":"e8cc582e-155d-4aea-943e-293612582ded"}
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 0x90b419569d4cad5b4275ba1786cda2c5cf9514e1a19951d1871281f955b240f3. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8cc582e-155d-4aea-943e-293612582ded.json and https://artists.proofprofile.net/proofs/artist/e8cc582e-155d-4aea-943e-293612582ded.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0x90b419569d4cad5b4275ba1786cda2c5cf9514e1a19951d1871281f955b240f3","name":"三面相","registered_at":"2026-06-21T09:25:07Z","symbol":"NIM1887864","token_address":"0x10aa57156c57361f618d97a4849825bf1d41d19a","type":"artist","uuid":"e8cc582e-155d-4aea-943e-293612582ded"}
album: きっと : だれか ; ぼくら
  type: MusicAlbum
  date published: 2024-04-03
album: Kitto : dareka ; bokura
  type: MusicAlbum
  date published: 2024-04-03
album: おはよう
  type: MusicAlbum
  date published: 2025-09-10