We are building a new zerocoin.org website. Please note that we are not affiliated with the previous website. Zerocash, the protocol that succeeded Zerocoin, is being developed into a full-fledged digital currency, Zcash. What is Zerocoin? Zerocoin is a project to fix a major weakness in Bitcoin: the lack of privacy guarantees we take for granted in using credit cards and cash. Our goal is to buil