http://sovereign.i2p/proof-of-payment.html
When you select an action, if the action has input parameters (Proof-of-Payment has one json message containing txid,txkey, and payment_address), you will be prompted for the input parameters. When you enter in the Action Input Parameter(s), and click the Perform Action button, the action will be performed with the output placed in the Action Output text area. The Proof-of-Payment input parameters (txid, txkey, payment_address) must be provided in json format, example:...