Quote from: Stack on October 02, 2013, 08:33:01 AM

Some good answers here, something else I'd like to put out there to you all

In one-off dice games, where there is a single bitcoin transaction used per game.

Would the transaction ID be an acceptable seed for generating a winning number?

Or are transaction id's predictable/manipulatable ?

Thanks!

Satoshidice also uses a daily secret. You can manipulate your transaction hash to a certain extent, such as not broadcasting one, redo it, then broadcast that one for whatever reason. But combined with a site secret, your roll effectively becomes random.

SD was one of the first blockchain based dice games. It's method is the gold standard.