The incentive layer

The fourth layer of the stack is the optional incentive layer. This layer deals with the distribution of rewards that are earned by nodes in the network for the work they do to reach consensus. Whether this layer is implemented or not depends on the consensus mechanism in use. The following diagram shows the common capabilities that are part of this layer:

The incentive layer include capabilities that describe what kinds of incentives are given by the network, when and how incentives can be earned by nodes, and the minimum amount of transaction fees needed to perform actions on the blockchain.