使用jsFiddle帐户确保jQuery AJAX请求

With jsFiddle, an AJAX form is served to the client. I would like to make sure that all AJAX calls are made with the form at jsfiddle.net/MyUsername. I would like to validate the requests with PHP on the destination server.

Is it possible ? If so, how ?

There is a header REFERER, but it can be omitted or forged, so it's not all that reliable.

There isn't a way to know for sure.