XZC (ZCoin) has been renamed FIRO (Firo).XZC is a cryptocurrency that protects accounting privacy through the use of the zero coin protocol. It is the first cryptocurrency that has implemented the zero currency protocol. By using zero-knowledge proof, it ensures that the relevant address information of both parties to the transaction is not disclosed. Zcoin was developed by the R&D team led by Poramin and Aizensou. It guarantees the accounting privacy through the zero coin protocol, and uses zero-knowledge proof to ensure that the relevant address information of both parties to the transaction is not disclosed. Its parameters are the same as Bitcoin, with a block production time of 10 minutes and a output halving cycle similar to Bitcoin, which is approximately halved every 4 years.The XZC was halved in September 2020, and the block reward after halving is 6.25XZC.Compared with the mixed currency technology and ring signature technology that realized the anonymity function in the early days, the zero currency protocol of zero-knowledge proof solved the shortcomings of the former two, and completely cut off the connection between the coin that was minted and the coin that was redeemed. When you mint a coin and also destroy it, a certificate will be generated to prove that you burned it. This certificate only confirms that you burned a small coin, but there is no need to prove which one you burned. Then, by using this proof, you can redeem a brand new coin with no transaction history at all....