About speed:
  We can learn from Ripple and Simcoin, how did Ripple and Simcoin can make instant transaction confirm.

About randomness source:
  Every player should choose a random number by themself and submit it with other bet info to the Chancecoin p2p network.  The Chancecoin P2P network then collect all random numbers submitted by all players, and calculate them all and output get a terminal random number which is used as the random source by current round gamble.    So because the terminal random number is decided by all the random numbers submited by all players of that round, so no one can cheat.  If you want to cheat, you have to know all the numbers before you sent your number.