Aside from everything else, would you like to show proof of funds? If your max bet is 500 mBTC, you must at least have several bitcoins in your bankroll, no?
At the very least, a signed message for a wallet would show some degree of solvency were a shark to appear on your site, betting away.
And I still don't understand why you're advertising a minimum deposit of 0.0001 mBTC when that is equivalent to 10 satoshi. There is no way that would be sent on the blockchain, never mind to your site. (And the promo wouldn't make sense if you
were able to do that.)
Here's some friendly archives, too.
P1:
https://archive.is/way54P2:
https://archive.is/koyT5