On October 10th, the Unichain white paper states that to become a validator in the UVN (Unichain Virtual Machine), a node operator must stake UNI tokens on the Ethereum mainnet. Participants can also stake and vote for validators, thus increasing the staking weight of that validator. A limited number of validators with the highest staking weight will be considered active sets and eligible to issue proofs and receive a specified reward for that Epochs.