Ha ha ha didn't know that anywhere can be Hooch than in paypal. I have some experience in developing similar apps. I think I can make an app for the checkout that just generates a QR with your address, it shouldn't be difficult. Given that I play at bitcoin casino I would like to get paid to my cryptocurrency wallet. If you are still interested, you can contact me to clarify the details of the project. I'll be online.
You've had plenty of excellent practical tips right here, but I'd reflect onconsideration on taking a step again at observe what you are trying to make happen in yourlink - that an app could help you gain.