Each active validator can propose an RBlock, providing he has a minimum stake required. During the proposal, validators vote on the RBlock they believe is correct by staking on this block. Thus, if a validator stakes on the wrong block, he will be slashed

Each active validator can propose an RBlock, providing he has a minimum stake required. During the proposal, validators vote on the RBlock they believe is correct by staking on this block. Thus, if a validator stakes on the wrong block, he will be slashed