Notification of payment

After payment, a request containing payment information will be sent to the notification URL specified in your store settings

Key	Description
shop_id	Project public key
amount	Payment amount
order_id	Order ID
currency	Payment currency (RUB, USD, EUR)
test	If it was set at the time of payment
sign	Request Signature

The signature is formed in the same way as when a form is created, but all fields are involved in the hash formation, for example

<?php 
$secret = 'GB%^&*YJni677';
$data = $_POST;
unset($data['sign']);
ksort($data);
$str = http_build_query($data);
$sign = md5($str . $secret);