what are 'master nodes'?
Masternodes are essential servers in a decentralized network and often determined as the backbone of the Blockchain. To get a Masternode you have to either own a large amount of coins or meet other specific criteria which varies from project to project. As a Masternode holder you have to perform certain services to the Blockchain like veryfying transactions. In reverse you are getting high rewards or weekly dividends, often paid out in form of the cryptocurrency itself.