I'm pretty sure there's no winning strategy for BlackJack at bitZino. It's a game of skill, but no matter how good you are at it, the house edge is still positive.
Tell that to my balance (: The trick with BlackJack is knowing when to split, when to double, when to take no cards and let the dealer bust, etc.
I'm not saying that some players won't get lucky and win in the short term. What I'm saying is that if you keep playing long enough, the house will end up with all your money. I know how to split, double, and stand at the right times. Doing so doesn't change the fact that the odds are stacked against you, it just means you lose more slowly on average.