All currency is fake. Even BTC.

Currency is simply a consensual delusion that it makes life easier. It's a first order derivative of actual assets. The silliness happens when that derivative is manipulated on it's own account.

BTC is the best fake currency, but if you want solid, follow the advice of mark Twain and "buy land, they don't make it anymore". Piles of gold or other actual stuff can be used instead.

I say currency not money because money is very poorly defined.