Cees mentioned
that there are no export requirements where he is.
Probably not 100% correct because The Netherlands signed the Wassenaar Treaty, but it's not an issue over here.
The only other country that readily pops up into my mind that made
trouble over crypto export is or was France. I don't know what the
current situation is, but if I'd were a French citizen I'd check this
up. I think the French government took a more liberal stance a couple
of years ago but I'm not sure.