you can check on bfxdata
Don't expect high rates; at this time, you can gain not more than 12%-13% annual return
Lol 13% yearly is a really crazy thing, for example profitability of ten years spanish debt is under 2 % per year , someone knows if it is possible to deposit BTCs exchange it to usd and swap it, or is needed some kinda of verification to do it, i would convert usd profits in btc again for withdrawal, i really prefer to avoid banks