Payment redirect to unique url


Hi folks, I'm hoping someone can help me here, or at least point me in the right direction?

I'm having difficulty fathoming this out, I know I posted something similar a while back but never did get around to sorting it :icon_dunno:

Basically all I want, is this process:

1. user visits a page that has a paypal express checkout
2. user pays through paypal express
3. user is returned to the original page which will have a new element on it, i.e. video but via a unique URL

Overall I want the user to access the content once paid, but I don't want them to be able to simply copy and give the URLto someone else who hasn't paid.

Now I know paypal offers a redirect following payment, but as far as I can see this isn't a unique URL. I thought about redirecting to a single page then editing the .htaccess to then redirect it accordingly to a unique URL but then that initial page could still be copied and shared if caught.

Does anyone have an ideas or a push in the right direction please? I want to make this transaction as simple as possible, no sign up, I mean even the paypal redirect is annoying :icon_mad: