$XEM (NEM)

XEM is a decentralized open-source cryptocurrency that has a number of unique features.

Perhaps the most important of these is the way the NIS1 blockchain is secured. NIS1 uses its own proof-of-importance (PoI) algorithm — as opposed to the far more widespread proof-of-work and proof-of-stake — for the purpose of ensuring that transactions on the network are processed and recorded in a timely and honest manner.

Proof-of-importance allows anyone to run a node on the NIS1 network and facilitate transactions via a process called “delegated harvesting.” The system takes into account every node’s amount of already held coins, how often they transact on the network and who they transact with, in order to approximate their “importance score” in NEM’s economy. Based on this score, the nodes then receive a share of the fees from the transactions they have helped to process.

NEM claims that the proof-of-importance system ensures that the network can identify and reward those that actually use it the most.

ATH $2.28CAD 2018 Currently .21 cents