125% per year is unsustainable. This is obviously a ponzi.
Its not 125% per year at all.
Ok, what is it then?
7% per month compound interest is 125% per year.
Its not compound interest, the interest is paid into your personal wallet at the end of the month, you only earn interest off of your initial investment. Other wise we would make no money and be far past fucked in a month.
Edit: Example
If you deposit .6 BTC which is the largest amount you can invest with us currently, you can make up to 0.042 per month
(depending on the investment package) that 0.042 will not gain interest.