I’m not sure what kind of mechanism TinyURL uses to secure the affiliate links. As far as I know, TinyURL is use to hide and shorten the URLs only but not to secure them. But I need to replace all of my TLA affiliate links that I use on my website to the new URL. I have to do this because after one week from now, the old TLA affiliate link will not work anymore.
Extra reading: Hide your Affiliate Links using PHP file