Hmm, that's interesting. Seems like it'd be abused by people betting 0.000001 BTC (that's 1 uBTC) though, 20% of ~1.7 BTC (~0.34 BTC) is still quite nice pay for such low risk. A bot might even make that quite profitable. Hopefully people don't decide to abuse that else FJ will probably have to make micro-bets ineligible.
It won't be profitable to run a bot. Max bet is 1 BTC, so that's enough for only 20 steps of martingale. The highest noted losing streak at 2x payout on Just-Dice was over 30, so 20 losses in a row is pretty realistic.
Ps. mattyd403 is the first dice jackpot winner, he grabbed BTC0.858748018 (50%). Congrats!
Why would you martingale when going for the jackpot with such a low bet? There's no reason at all to martingale in an attempt to avoid a loss when betting 1 uBTC simply to win a jackpot. It doesn't make mathematical sense.
The expected return of flat betting 0.000001 btc would now be 99% * 0.000001 + 10%^6 * 20% * size of jackpot pool, am I right?
If that is correct, it should be profitable to make lots of 0.000001 bets as long as jackpot pool has more than 0.05 btc.
If that is correct, it should be profitable to make lots of 0.000001 bets as long as jackpot pool has more than 0.05 btc.
That seems correct, i.e. 0.00000099 + (0.000001 * 0.2 * size of jackpot). So for a jackpot of 0.05 BTC the expected return for betting 0.000001 BTC is 0.000001 BTC - also known as 0.00000099 + (0.000001 * 0.2 * 0.05). Anything above that will be profitable, and clearly a jackpot of say 1 BTC is going to be botted.
I don't think FJ is concerned though and to be honest I don't see why they should worry either way - they can only get 20% of the jackpot. Does that mean the 60% left over (as 20% goes back into the pot anyway) goes to FJ or to the jackpot again? If it goes back to FJ, then it's actually profitable for them if people do this, if it goes back to the pot, then it doesn't matter anyway.
And I suppose it's still betting activity for them either way, heh.
the probability is quite small. But I see there a jackpot winner today, he won 0.8xx 
