I recently noticed a gambling website (
www.bitcoinbetting.website) is offering 4 times return on correctly guessing the last digit of a block hash. I would like to know, how random is the last digit of a block hash really is? Is there any bias towards numbers or letters?
Update: Lately, they have increased return to
16 times for each winning bet.
16 times is too much , that means they didn't make money from it .
And I think people will rarelly play a game with 1/16 chance to win.