Instant payment POST notifications

Instant Payment Notification (IPN) is a message service that automatically notifies merchants of events related to SIKAPAY transactions. Merchants can use it to automate back-office and administrative functions, including automatically fulfilling orders and providing customers with order status.

Easy start

Create account, apply for verification, get approved and start accepting payments!

IPN system

Instant Payment Notification (IPN) is a message service that automatically notifies merchants of events related to SikaPay transactions.

Developers mode

Special developers payment mode for developers without using real money!

Recieve payments by integrating HTML form or directly on SIKAPAY

How to receive payments?


Website - simply publish the HTML form and enter necessary parameters. Client pay for buy on the payment page


Merchants and Payment - add your store to our merchant and payments and the client pay the buy in your record


Invoicing system - Enter the cost, the beneficiary and the portrayal of the invoice.

Mode of Payments

and other methods


POST form for payment

Variable Description Conditions Necessarily
merchant Merchant ID in the system Sika Pay. Assigned to the merchant automatically after adding a store to your account. Your store must be moderated Not equal to 0 Yes
item_name Product name or purpose of payment. This item is visible to the payer Minimum number of characters 3, maximum - 100 Yes
amount The sum in any form. The sum is rounded to decimal places. The total amount including commission will be calculated automatically Sum is more than 1 Yes
currency Currency of payment. Available currencies debit_base, debit_extra1, debit_extra2, debit_extra3, debit_extra4, debit_extra5 Only values from the list Yes
custom Comment to the payment. For example, the order number in your store. This item is not displayed to the buyer Maximum - 100 Yes

IPN notifications

Variable Description Example
$POST['amount'] The received amount without commissions 100.00
$POST['fee'] Fee for payment. Paid by the buyer or merchant according to the settings 0.20
$POST['total'] Total transaction amount including commission 100.20
$POST['currency'] Transaction currency for which payment was made debit_base
$POST['payer'] Buyer username in the system Sika Pay johndoe
$POST['receiver'] Merchant username in the system Sika Pay SIKAPAY
$POST['status'] The status of the transaction. Always Value "Confirmed" Confirmed
$POST['date'] Transaction date 2018-01-09 03:11:07
$POST['id_transfer'] Unique transaction number in the system Sika Pay 58954
$POST['merchant_name'] Merchant store name in the system Sika Pay Nanotech LLC
$POST['merchant_id'] Unique number of merchant in the system Sika Pay 21
$POST['balance'] Available merchant balance in transaction currency 2100.56
$POST['item_name'] Name of paid goods Test payment
$POST['custom'] Comment on payment, formed by the merchant in the HTML form INV 1452485
$POST['hash'] A unique signature that is used to verify the validity of a notification. A string join is created of the total amount, merchant password, date transaction and transaction ID. The string is encrypted using an algorithm MD5. C93D3BF7A7C4AFE94B64E30C2CE39F4F

Example of a notification handler in PHP

For developers
  • // Publish on your site
  • <form method="POST" action="" target="_blank">
  • <input type="hidden" name="merchant" value="7">
  • <input type="hidden" name="item_name" value="Testing payment">
  • <input type="hidden" name="amount" value="112">
  • <input type="hidden" name="currency" value="debit_base">
  • <input type="hidden" name="custom" value="comment">
  • <button type="submit">Pay now!</button>
  • <form/>

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