This looks very suspicious because this website seems like it is brand new and still they are claiming to have a 30BTC jackpot that's going to take place is about 38 hours. They also claim that they have paid other jackpots before to people but it seems impossible to find out who those winners are and a payment proof of their winnings. I suggest that everyone should stay away from this, at last until we get some clarification about the website from OP, because at first it seems like a big scam.