Added your site to
http://dicesites.com for stats and also made a
BetterBets provably fair verifier
While making this verifier I noticed a few things:
1) What is "Client Seed Sequence"? It seems to be not used at all.
2) Could you show the "server secret" (which is MP's roll) on the bet detail popup? Obviously used for verifying the rolls, and it's not very convenient to let the players go to 2 sites to copy the data.
3) IMO, you should generate a random client seed before every bet in the browser. If a player bets with the same client seed every time, in theory MoneyPot could give "next server seeds" based on their betting pattern. So if a player is betting high every time, they would give low numbers based on the same repeated client seed. I am not accusing MoneyPot of this AT ALL, RHavar seems a trustworthy person to me, but provably fair is all about not needing to trust the site owner.
4) AFAIK you should allow the client seed to be a number in the range of 0 and 2^32-1. However you are saving it now a signed INT which has a limit of 2^31-1. You should make it unsigned so the player can put the full range of numbers as client seed. In theory again MP could influence the outcomes with the information that the client seed will always be limited/low.
5) It is possible to directly link to my verifier with: a link like this (ss = salt, ssh = server seed, sr = secret, cr = client seed) There are several sites that do link to my verifiers, which make it easier for the players to verify their bets, but it's obv up to you 