🔔Order Asynchronous Notification

After the order is completed, the system will automatically send a notification message to the callback address (notifyUrl) associated with the order to inform you of the final status of the order.

Method：POST

Parameter Type：application/json

Parameter：

Field Name	Field Type	Required	Signature	Instruction
appId	string	True	True	Merchant APP ID
orderNo	string	True	True	UPay order number
merchantOrderNo	string	True	True	Merchant order number
chainType	string	True	True	Network: 1: Tron (TRC20) 2: PayPal (PYUSD) 3: Ethereum (ERC20)
crypto	string	True	True	Amount, Unit: USDT / PYUSD
actualCrypto	string	True	True	Amount of received, unit USDT / PYUSD
poundage	string	True	True	Handling fee, unit USDT / PYUSD
actualPoundage	string	True	True	Handling fee of received, unit USDT / PYUSD
status	string	True	True	Order status: Order Status
createdAt	string	True	True	Order creation time, Unix second level timestamp
completedAt	string	True	True	Order completion time, Unix second level timestamp
attach	string	False	False	User-defined data will be returned unchanged when calling back to notifyUrl.
signature	string	True	False	Data signature, see: Signature Algorithm

Notification return

After receiving the notification information, the merchant will output OK or ok (php example: echo "OK";) in the body of the response body. Otherwise, the point-to-point notification will be sent 5 times.

Notification retry policy

If the first notification fails, subsequent notification frequency (seconds): 10, 30, 60, 300, 600.

Order Status：

status	Field Type	Description
0	string	Awaiting payment
1	string	Payment success
2	string	Timeout
3	string	Failure