Before dooglus invented provably fair, we just played Dice Games and hoped for the best. Now that JD came out we understand how useful that was. In this thread we tried to find a RNG that the owner can't manipulate, but if it's not possible then that's fine. It's not like investors will go to a competitor who has it.
I expect you're joking, but I didn't invent provably fair!
The first implementation of it I was was on bitjack21.com (or whatever it was called), and later bitZino.com implemented much the same system.
Before I gave up on a system that was provably fair against the operator cheating, I was thinking of a system where each investor runs a small server of their own which {does something} to each bet in real time, and passes it on to the next investor's server. Each investor seeds their own server, and so there's no way of cheating unless all the investors cooperate.
But then if any one of them goes offline, the site stops working.
"OK, so any 7 of 10 investors can generate the roll"?
Well, in that case I'll just try various sets of 7 from 10 until I find one that makes me win...
Any way you roll it, I can't see a reliable way of stopping myself from being able to cheat while also having the site be able to process player rolls quickly.