Auditor viewing key
With the viewing key, an authorised auditor decrypts confidential-transfer amounts from on-chain events — oversight without breaking public privacy.
Confidential transfers emit an encrypted view tag (the amount ECDH-encrypted to the auditor's key). To the public these amounts are hidden; to a holder of the viewing key they're recoverable. Run a few transfers on the Confidential or Guided Demo page, then scan here.