What is Crypto Payment Webhook?

A Crypto Payment Webhook is an automated, real-time HTTP callback (usually a POST request) that is triggered when a specific blockchain event occurs. In the context of payments, a gateway uses webhooks to notify the merchant's server that an invoice has been paid or a transaction has received the required number of block confirmations.

Because blockchain confirmations are asynchronous (they do not happen instantly during the API request), webhooks are the only reliable way to update order statuses, upgrade SaaS subscriptions, or release digital goods without inefficiently polling the blockchain.