You don't have any valid response so you resort to insults?   I put two children through private schools on money made from trading options, I have a wealth of experience.  

Back to the points at hand, you do promise profit in bitcoins by the title of this thread " ~~ Invest your bitcoins ~~ One and only safe way ~~".  Your investment isn't safe for bitcoins even if you could deliver 5% gain every two weeks.      Additionally, you clearly you don't understand how things like Forex work.   A skilled trader can make 10% or better a year, but you are talking about making over 350% a year.   No one can promise those returns.  (5% every two weeks.)   High returns requires high risks.  Sometimes the risks bite you and you lose.   Losses will happen, they always happen.

Finally if you could really make 10% every two weeks trading on the Forex, then you wouldn't have any need for additional capital.  I suggest you give up on the insults and start learning how to be honest.