Proof-of-Stake (PoS) is an alternative method of Proof-of-Work in mining crypto assets. Like PoW, PoS aims to reach consensus and avoid Double Spending cases in Crypto Asset transactions. Unlike PoWm, this method does not require the process of breaking the code in creating blocks, but rather based on a percentage of preexisting coins. The greater the amount of coins a Miner has, the greater the coin he can produce. An example of a coin that is mined using PoS is Peercoin.