As soon as a payment is received you will receive a webhook message to your server if you specify webhook_url
upon creating an invoice.
# The following is POSTed to your invoice's webhook_url{"uid": "INVOICE_UID","status": "paid","hash": "TRANSACTION_ID"}
If you prefer you may manually check the invoice status through the API after receiving a webhook.
GET https://api.anypayinc.com/invoices/INVOICE_UID