Kalkicoin

Kalkicoin is the first full implementation of the Zero coin Protocol, which allows users to have complete privacy via Zero-Knowledge cryptographic proofs. It is worth noting that Kalkicoin is unrelated to other currencies utilizing the Zero cash Protocol. Although Zero cash is a development from Zero coin, their respective implementations are not simple forks of each other, but rely on different cryptographic assumptions with various trade-offs. Both approaches supplement each other quite nicely, and a good way to describe them would be sibling projects.