Someone asked this question:
Bitcoin payment API inside C# application
I have never seen a bitcoin payment gateway API being implemented inside an c# application for example to unlock the application, have only seen that on websites. Does anyone have an example application which is using an btc API to unlock the app or process a payment for something else inside the app, without redirecting to a web page?
Subsequent comments:
Actually I'd just prefer any finalized software where a btc payment gateway was implemented. But source code would be okay aswell
you misunderstood my questions. I know all the API's. For example cryptopay C# payment gateway API. I am just looking for any application that has implementet the btc payment API.
Is it on-topic or off-topic?