Even if you did everything you said, it's still a bit scammy.
Just say i put up my 10% of $1000.
Now i can put the other $900 on the coin you choose.
Coin goes up in value by 1% in 24 hours.
Congratulations, you made $100, i still lost $91 even though you picked a winner for me.
Okay, what you suggestions are? I should reduce the insurance fee? Yes you are right you can still loose 91.
What if the insurance fee is 2,5% then.
All i want is just to find some allnost perfect way with perfect structure.
And use it for profit both sides to make it 50/50 win/win. Road to this not smooth asi see..