Neat idea! Oh man, how do you expect me to fix my UI bugs when you give me such tantalizing ideas to play around with. I've got a little script generating my sha256 chain now. But it's quite an intrusive change, so I don't think I'll be able to get it live for a while.
See the "how does it work?" answer here: https://lbaat.net/howtouse for where I first saw this idea.
Even though the odds are in my favor, I find the prospect of being the counter-party against your bets rather terrifying (when the bankroll is also known as my personal savings) =/
That's why we crowd-source our bankrolls these days, so we don't have to risk our savings...
Have you done any analysis to determine what a safe amount to risk per game is?
Do I remember reading that you risk up to 10% of the bankroll per game? That seems very dangerous for a game with a 1% house edge.