For a payment system that I am building in Laravel 5.4 I need to create a page where a customer can go to and pay a bill. Right now I am creating a page for every payment with a key slug generated with a hashed timestamp.
$registration->key = md5(time());
The idea is that no one can access this page without having the key slug/unique link.
I was wondering if this way of a 'paylink' is safe as long as I am setting the page meta 'robots' to 'none'.