It seems like we need a catchphrase to attract the masses. "E Pluribus Obscurum" sounds nice and the translations too, but can Latin appeal to the general public as well as the pure genius of "Such wow" or "The silver to Bitcoin's gold"?
What about, "Naughty, but nice!"

edit: full credit to Salman Rushdie.
"Such Dark"
"Darkcoin. Privacy matters."
"Bitcoin - 2009. almost anonymous. almost instant.
Darkcoin - 2013. Anonymous. Instant."