Are there any sites where you get referral sign up commission PayPal payments in less than or 24 hours and have a forum where proofs are displayed?

I would say the site you would be looking for is prizerebel. It is a very legit site that pays you for real and it gets like 5 offers a day. The forum does have proofs. Just go to the "Look What I Got" section. The forums also have guides on how to do offers. They pay with Paypal. So try it out.