How Is a Validator Selected in a Typical PoS System?

In a typical Proof-of-Stake (PoS) system, a validator is selected to propose or attest to a new block through a pseudo-random process that is weighted by the amount of cryptocurrency they have staked. A validator with a larger stake has a proportionally higher chance of being selected, but randomness ensures that smaller stakers still have a chance.

This mechanism incentivizes staking and secures the network by making the next block producer unpredictable.