My knowledge of proof of work is its basics. The thing I know about PoS is that it's a consensus mechanism that choose the one who add/mine the next block to the blockchain based on the its stake. If I have more stake, my chance is higher to mine the next block. In other words, the probability of mining next block is proportional to the amount of coins I've staked. So if my assumptions and understanding of PoS is wrong please let me know.
My question is does this method needs a trusted party to work?
