XEM adopts the importance to prove the POI consensus mechanism and determines the accounting rights based on the dimensions of transaction volume and activity, so it can pack a block every 60 seconds, which is much faster than bitcoin and Litecoin. Its total is 9 billion pieces, and all XEMs were issued at the beginning of the release. Therefore, each new block does not generate new XEM rewards. The block reward is only a transaction fee, which is not inspired by future advanceders. NEM features also include: complete point -to -point security system encryption information systems and prestige system based on EIGENTRUST ++ algorithm.