Yes, you can print a receipt that shows your transaction history for passes you purchase at the kiosk. Click the 'I have a pass' button on the right side of the home screen on the kiosk. It will give you an option to show, then print your transaction history. You must swipe the same credit card you used to purchase the pass.
You could also use the printed code as a way to prove you bought a pass.
For passes purchased through the Divvy or Transit apps, we recommend you take a screenshot of your purchase to prove you bought a pass.