Checking a payment by comment or transaction number?

Question

Payment systems

I noticed on some sites that payments are not accepted through the kiwishop, but so that a person inserts a comment or transaction number, after pressing the button, the payment is checked for 1-2 seconds. Can anyone tell me how it works?

Answer 1

The site asks the aggregator whether the payment with the specified identifier was paid, if it is paid, the necessary service is activated

Answer 2

Kiwi has such a thing as a store connection, this option is integrated into most cms modules. But there is an option that is used by the lazypay engines and the deer.io service, where payment verification is organized a little differently, the script using the login password enters the wallet and checks the transaction with the necessary comment. For this payment option, you do not need to connect to the Qiwi store. At the moment I'm busy looking for a normal script in which you can sell digital goods in this way, or a module for a popular CMS. If I find it I'll let you know =)