You should stop to play Blackjack, I don't know any players who won on that game... I'm sorry for your story, I lost also on that game and the owner said himself that most of his profits come from that game. So it is impossible to know if this game is really fair or not as no one is controlling it like real casino.
The hash that they are showing 2 minutes after the game could be a sequence of card prehashed, recorded and display when it needs to be display to justify the result. So again, if you play that game, you must trust that casino, you have no other way to be sure it is 100% fair.
For my part I don't want take position about the fairness of the game, but for sure this casino is making nice money and its dividend distribution is not fair so if you are starting to play for the token, I can already say you that you will never have back your STEEM with the token, the current dividend distribution is very very very low
RE: GAMER Buyback System is LIVE