I would like to see a real Libertarian plan for a civilization that would actually work. If there is one, why haven't they created it yet?
You are taking part in it. The plan is to just replace governments and their creations piece by piece with superior decentralized alternatives. If these alternatives don't get created or adopted, perhaps there is still a need for government intervention in that realm. The idea that everything should be planned out beforehand is for other people to do.
I see the decentralization movement not replacing government, just decentralizing it. Libertarians believe in no government and survival of the strongest. Historically Libertarians practice continuous warfare.
https://en.wikipedia.org/wiki/Anarcho-capitalism#History Other than Vikings living through raiding unsuspecting villages, I don't see a culture of selfishness actually working. Eventually collectivism of some sort will overpower warlords.
I can see Bitcoin promoting privacy where government does not interfere with the individual without cause, such as taxation without representation. In fact, Bitcoin will probably eliminate the need for national borders and limit the ability of large-scale warfare because money is globally interdependent.
Funny how all this 'decentralization' actually does the work of the 'dividing' prior to the 'conquering' that will soon follow. You regionalist fools are walking headlong into a trap in many regards to these proposed 'solutions'. Mark my words, before this decade is through we're going to see a serious resurgence of secessionism.