...
Transaction Hash Validation: This is applicable by default on our transaction notification webhook. A hash of some properties in the request payload is computed, and you can validate this on your server by computing the same hash and comparing outputs. For more information about this, please see Computing Request Validation Hash
IP Whitelisting: To prevent requests from un-authorized origins, you can whitelist our IP address and only honor requests from this IP. Webhook notifications from Monnify will come from the following IP addresses - 35.242.133.146
...