I know you have all seen different investment spots for BTC and alot of them are ponzis and scams. I personally have used 2 different sites that I have actually been able to withdraw my interests from and it has been earning exactly what they say they do. Check them out I have listed the links below. Of course these are my refferal links and I would appreciate if you used them, however feel free to take the ref part of the link out and sign up on your own. If you use my link you will earn the same i will just get a small bit of extra instead of the site owners. Anyway check below I have 2 sites Mbitco and Hashwave. Mbitco offers several different plans from 1 day to 5 days all the way up to 40 days with interest rates from %4 all the way to %1000, be aware the interest at this site does not accrue until the plan time is up. Hashwave on the other hand offers hourly interest and you can just more than double your deposit if you stay for the whole 30 days. I have not been here for 30 days yet but I have withdrawn my interest every hour for the few days I have been there with no problems and it is generating it as stated. At any rate please feel free to check them out here:
https://mbitco.com/?ref=vestavius
https://hashwave.io/?ref=vestavius
Also all tips are greatly appreciated so if you find these sites help you and are what you are looking for and want to send a tip my way then by all means please do

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P.S. If your skeptical like I was at first then just do the minimum deposit and see if it works as it states thats what I did and now I am prom,oting it lol.....Happy Investing!