How to organize the acceptance of payments on the site using the service in the USA/Europe?

Question

API

It is necessary that the service meet such conditions
1. abstracted me from the payment system
2. simple payment process for the buyer
3. desirable but not necessary - it supports Russian and Ukrainian payment systems
4. was under jurisdiction in Europe or the USA
5. could accept payments from any country

Answer 1

I am also working on solving this issue. All the services that I registered with were asked to fill out a US tax form and some other documents. Plus, some have a substantial subscription fee. So in search.