http://www.satoshidice.com/Multiple bets per transaction
If desired, you can put multiple Bitcoin bets in a single transaction. Just put in multiple outputs to as many of the bet option addresses as you want. Each bet will be evaluated and paid. All the bets from one transaction will have the same lucky number.
как несколько ставок сразу сделать не понял
upd. "Все броски костей проверяемы через blockchain." как?