PoS depends on a validator’s economic stake in the network. It is framed as more environmentally friendly because it does not depend on an external energy intensive process as PoW. There is no What is a Block Reward? A block reward is the reward a miner... More in PoS. To conduct a What is a 51% attack? A 51% attack is an attack on a proof o... More, you would need to control 51% of the total stake; in proof-of-work, you would need more than 51% of the total hash power. In Proof of Authority (PoA), instead of offering up a resour... More is a variant of the What is proof of stake in blockchain technology? The proof o... More Consensus is a mechanism, usually used by most nodes on the ... More mechanism where instead of tokens, network participants stake their identity and reputation.