To replace fiat you need something that is (more or less) equally valued worldwide, like the US dollar. Before something like that appears nothing will replace the fiat system, ever. No one will accept a currency that exists on the internet because it is "fake money" for most of the world. You simply can't force an idea onto the whole world just because it sounds good to you.

To build up a real alternative economy we must become independent from fiatmoney .. and one thing which is protected from all sides -- also by the elites -- is gold. so a goldstandard-covered coin would be a beginning to have a value ..

Gold is priced in US dollars, thus Gold is also dependant on Fiat. It's really nonsensical to even discuss this because everything is valued in fiat for many very good reasons. How can you value Gold if you remove the US Dollar value from it? In houses or loaves of bread?