Isn't 10 kelly actually 10 times of your investment? how much did you invest? If you invest 5, you were contributing and risking 50 BTC to bankroll. am I wrong?
Yes, you're clearly wrong. How can you risk 50 BTC when you only deposit 5 BTC? That would leave you owing the site 45 BTC if you lost the amount you were risking.
Here's how it works:
The house edge is 1%, and so the Kelly criterion tells you that it is optimal to risk 1% of your bankroll per bet.
When you opt to risk 10 times the amount that the Kelly criterion tells you to risk you are risking 10% of your bankroll per bet.
That's all. It's really simple.
So if leen invested 5 BTC at 1x Kelly, the risk is 0.05 BTC per bet (1% of 5 BTC).
And investing 5 BTC at 10x Kelly would mean a risk of 0.5 BTC per bet (10% of 5 BTC).
There is no way to risk 29% of your bankroll per bet when the maximum multiplier on offer is 10x.
This is all pretty basic stuff.