What Role Do ‘Validators’ Play in the Token Transaction Process on a PoS Network?

Validators are responsible for proposing and attesting to new blocks of transactions, which include token transfers and smart contract executions. They are selected based on the amount of token they have staked.

By confirming the legitimacy of transactions, they secure the network and are rewarded with transaction fees and newly minted tokens. Misbehaving validators can be 'slashed' or penalized.