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Question

I want to make a web application were people are paying money (for example through mastercard/visa/paypal etc.).

My question is: can it somehow be made that the money transfers are made only after a longer period when a condition is met in my web application.

Answer 1

Yes.

What's your real question?

You have a multi-step workflow with money changing hands after many steps. That's pretty standard for all shopping-basket sites.