PrivacyOperational

Payment Proof Checker

Check that a Monero transaction paid a given address, and how much, using the transaction key the sender's wallet shows.

What never leaves your browser

Only the txid is sent to our server (to read the public transaction from two Monero nodes). The tx key, view key and address are used only in your browser. We never ask for a seed phrase or a private spend key.

Where do I find the tx key? Monero GUI: Transactions → expand the tx → "Tx key". CLI: get_tx_key <txid>. Feather: right-click the tx → Copy → Tx key. Cake Wallet: transaction details.

Limits: a tx key proves the sender created the payment; it does not prove who sent it. Anyone with the tx key and address can run this check, so share them only with the person who needs to verify.

Method: the same math as the Monero wallet's check_tx_key (key derivation, view tags, amount decryption checked against the on-chain commitment), reused from RugWard's tested code. getmonero.org: prove payment