I am earning 1% per day on my Bitcoins with USI-Tech, and they also have a referral program with 1st level at 10% commissions. This company has been around more 8 years and is very transparent , you can see all the trading and you can rebuy with your earnings to compound your profits.
https://steemit.com/bitcoin/@skimball/build-your-bitcoin-1-per-day-passively#@skimball/re-satoshit-re-skimball-build-your-bitcoin-1-per-day-passively-20170729t234421967z

You can register here for free to check it out:
skimball.usi-tech.info please contact me if you have any questions
sandykimball33@gmail.com