Bitcoins price is set by supply and demand, and no cash settled futures can change that.

and we have already disseminate 79,7% of the bitcoins.

If it is true that only 0,01% of the population today uses bitcoin, and the price is almost 20000 USD, imagine the price when 50% of the population uses bitcoin. We are talking several hundred million dollars, maybe even in the range of a billion. One million will be reached within two years at this rate.