Why you interested? So you can try and hack their wallets 
Maybe he is trying to build his own site and wants to understand how does storage coins work.
if he doesn't know what is hot and cold wallets then he has a long path ahead, whatever he would like to do.
(and what is pf coins, btw?)
could be letter "o"
of coins
still doesnt get what he means if he is looking for the wallt of the casino then he wont find it, since casino always use mixer to do their transactions for security purposes