10% interest rate per year is not enough, I think rate must be higher. And the second question would be the trust - how can measure the BTC bank trust, if you are going to transfer them higher BTC amount ?
The higher rate, the more change you will get scammed! 10% should be reasonable! Even for the big popular trusted Bitcoin related business, you might be safe to deposit coins there but there is still small chance they get hacked! Just invest what you can afford to lose!