Webhook
Method POST
Webhook is a kind of feedback method for payment information.
RESPONSE parameters
| coin | TRX or USDT or USDC |
| txid | Transaction hash on the blockchain |
| payment_id | FastPay payment ID |
| amount | Amount actually paid by client |
| amount_usd | Amount actually paid by client in USD |
| amount_uah | Amount actually paid by client in UAH |
| amount_rub | Amount actually paid by client in RUB |
| commission | Commission FastPay |
| order_id | Order ID in your system |
| address | Address |
| signature | The signature is created using the HMAC-SHA256 hashing algorithm and includes the request body and your shop API key |
We recommend that you check from which IP address notifications are coming to your result url. We send notifications from the IP address: 5.34.181.10, 2a02:27ab:0:2::2e2
PHP EXAMPLE
function getIP() {
if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) return $_SERVER['HTTP_X_FORWARDED_FOR'];
return $_SERVER['REMOTE_ADDR'];
}
if (!in_array(getIP(), array('5.34.181.10','2a02:27ab:0:2::2e2'))) {
die('IP does not match!');
}
$shopKey = 'lSbwfqtEsQzjDkQ7J5Qf82hcHgs3lIDa';
$signature = $_POST['signature'];
unset($_POST['signature']);
$hash = hash_hmac('sha256', http_build_query($_POST), $shopKey);
if ($hash !== $signature) {
die('HMAC signature does not match!');
}
$coin = $_POST['coin']; // TRX or USDT or USDC
$txid = $_POST['txid']; // Transaction hash on the blockchain
$payment_id = $_POST['payment_id']; // FastPay payment ID
$amount = $_POST['amount']; // Amount actually paid by client
$amount_usd = $_POST['amount_usd']; // Amount actually paid by client in USD
$amount_uah = $_POST['amount_uah']; // Amount actually paid by client in UAH
$amount_rub = $_POST['amount_rub']; // Amount actually paid by client in RUB
$commission = $_POST['commission']; // Commission FastPay
$order_id = $_POST['order_id']; // Order ID in your system
$address = $_POST['address']; // Address
// Update the balance in the database
if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) return $_SERVER['HTTP_X_FORWARDED_FOR'];
return $_SERVER['REMOTE_ADDR'];
}
if (!in_array(getIP(), array('5.34.181.10','2a02:27ab:0:2::2e2'))) {
die('IP does not match!');
}
$shopKey = 'lSbwfqtEsQzjDkQ7J5Qf82hcHgs3lIDa';
$signature = $_POST['signature'];
unset($_POST['signature']);
$hash = hash_hmac('sha256', http_build_query($_POST), $shopKey);
if ($hash !== $signature) {
die('HMAC signature does not match!');
}
$coin = $_POST['coin']; // TRX or USDT or USDC
$txid = $_POST['txid']; // Transaction hash on the blockchain
$payment_id = $_POST['payment_id']; // FastPay payment ID
$amount = $_POST['amount']; // Amount actually paid by client
$amount_usd = $_POST['amount_usd']; // Amount actually paid by client in USD
$amount_uah = $_POST['amount_uah']; // Amount actually paid by client in UAH
$amount_rub = $_POST['amount_rub']; // Amount actually paid by client in RUB
$commission = $_POST['commission']; // Commission FastPay
$order_id = $_POST['order_id']; // Order ID in your system
$address = $_POST['address']; // Address
// Update the balance in the database