But Green says he was inspired by the rise in value of the new cryptocurrency Dogecoin–a mostly-frivolous creation based on the “Doge” dog-picture meme. In just the last months, Dogecoin has achieved a per-coin value of around 3.3.% of a cent, despite having no real value beyond Bitcoin other than humor. Zerocoin’s privacy properties, Green argues, could make it far more valuable. “If people will put money into Dogecoin, they’ll put it into anything,” says Green.