ePay is a Proof of Work cryptocurrency based on the X11 algorithm. In addition to traditional Proof of Work rewards for mining Darkcoins, users are also rewarded for running and maintaining special servers called “Masternodes”.
Though future plans envision several roles for Masternodes, their primary function is to carry out the anonymization phase of the Darksend protocol. The service that Masternodes provide to the network is the beating heart of Darksend, which, in turn, is the defining feature of DASH. In return for providing this service, with each block mined, one Masternode is randomly selected by the network to receive 20% of the payout from that particular block.
