Anarchists simply want every single thing to be voted on by the people, whether through referendum or randomly picked representatives. Anarchists agree that there should be governing bodies (merely that they shouldn't be the ones we have right now, and that they should be more representative and prevent the formation of a political class) and that authority should also be granted by these governing bodies _and_ revokable by the same. Hence, there is nothing an anarchist loves more than voting. It does not prevent living in groups, just that there are no leaders in that group.
By saying it is defined as an absence of government and authority, you're either thinking of ancaps (which are a bad right wing joke made up of said Ayn Rand readers), or dogshit propaganda fed to you. Read a bit.
Reading a bit:
1 a : absence of government
2 a : absence or denial of any authority or established order
Merriam Webster
Redefining anarchy to mean democratic government is a new one.
Calling cryptocurrencies "anarchist" is walking on the corpse of actual anarchists and taking a big, steaming shit on them. Anarcho-capitalists have nothing to do with anarchy and are just kids whose bedtime reading was, regrettably, Ayn Rand.