What is an invoice
How an invoice connects an order to payment details and cryptocurrency payment status.
Webhooks
What is a webhook
How a server receives events and why receiving a notification requires verification.
How to automatically confirm order payment through a webhook
Link an invoice to an order, verify webhook signatures and guard fulfilment against retries, underpayment and rollbacks.
How to accept crypto payments in a Telegram bot
Link a physical-product order in your own Telegram bot to a Cryptanio invoice, send a payment link, and verify payment. Includes Telegram Stars and Mini Apps restrictions.
Why an order stays unpaid after cryptocurrency has been sent
Check the transaction, network and token, the specific payment attempt’s details, amount, and invoice status. If the invoice is already paid, investigate its order relationship and webhook processing.
How to accept USDT payments on your website
Choose the USDT network and token, connect a receiving address for your website, show exact payment details, and distinguish a sent transfer from a paid order.
How to check notification delivery and resend it
Find a notification in Deliveries, review the sending result, and queue another delivery of the same event if needed.