Since this prediction is only open for 12 hours, what is the difference between binary options and your website idea?
You don't choose between two outcomes. You predict the exact value (two decimals) and the closest win all the other bets.
What happen if nobody make bet during this 12 hours and there will be only 1 entry and prediction than how many percentage that person will get back as winning amount?
If there is only one prediction, I will not charge anything. The bet will just be sent back. When there are more than 3 predictions, I will charge 40% of the total amount during winner selection. That may seem like a lot, but it's really not much considering the entry price and the fact that I need to pay server costs and such. The stakes will still be high.
For example:
0.02 = Entry price
20 predictions = 0.24 BTC for the winner
Yeah by the way, the entry price is 0.02 now. Let's see how that works. Thanks for the feedback guys, keep it coming. I'm hoping to make this work. Remember it's just some public testing at the moment. Changes will be made.