The Delegate reward rewards the top 100 delegates for proving their contribution by registering a node and receiving network-stake delegation from ICON community members. All delegates acquire a certain amount of ICX per block, depending on the amount of tokens staked (i.e. delegated) to them by ICON community members. The more tokens that are staked to them, the more rewards they earn. Therefore, this system provides an economic incentive for delegates to work harder to receive more tokens staked to them.