To run a successful public blockchain, there needs to be some kind of incentive program for individuals to join the network and to participate in the validation of transactions. As explained in the section on the consensus layer, what kind of work needs to be performed to reach consensus depends on the mechanism chosen by the network originator: the more difficult the PoW, the more elaborate the rewards distribution system.
A blockchain that uses PoW rewards the node (or miner) who solves the mathematical puzzle first when creating a new block. The node receives an amount of cryptocurrency in return. For example, Bitcoin currently has a block rewards of 12.5 coins, which halves every 210,000 blocks. ...
