In an ordinary Proof of Work system, miners compete in order to solve a problem and receive a block reward. However in Ark, that issue is mitigated with Delegated Proof of Stake (DPoS)
where users vote for individual delegates
to be given that task. The task of forging
a new block is assigned to one of the top 51 delegates with the most votes every 8 seconds. Adding a new block to the blockchain awards the forger with 2 newly minted Ark. This means every delegate gets an average of 422 Ark every 24 hours.
It is common practice for delegates to offer to share their forging rewards with their voters in order to entice them to continue voting for them and secure their spot in the top 51.