# WebhookDataCreateAllOf
## Properties
**secret** | Option<**String**> | Must be used by the callback receiver to ensure the delivery comes from BTCPay Server. BTCPay Server includes the `BTCPay-Sig` HTTP header, whose format is `sha256=HMAC256(UTF8(webhook's secret), body)`. The pattern to authenticate the webhook is similar to [how to secure webhooks in Github](https://docs.github.com/webhooks/securing/). | [optional]
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