Considering its aimed at hackers, maybe put a "powered by stripe". That would probably reassure most people in your target market at the moment. Though if you

Considering its aimed at hackers, maybe put a "powered by stripe". That would probably reassure most people in your target market at the moment. Though if you do end up adding a paypal button try not to use the word "donate", paypal seems to have a problem with non-charities doing this.