Firo (FIRO) formerly known as Zcoin is a privacy-focused cryptocurrency that takes advantage of zero-knowledge proofs and allows users to destroy coins and redeem them at a later date for brand new ones without any transactional history.In late 2014 Poramin Insom and Matthew Green wrote a paper on a cryptocurrency implementation of the Zerocoin protocol named Moneta. On September 28 2016 Zcoin was launched by Insom with Roger Ver and Tim Lee as the initial investors.