Proof of Stake

It is a mechanism designed to distribute interest according to the number of tokens that users are staking. It is an upgrade to PoW, and supplement to the PoW‘s disadvantage of resource wasting. Under this , the difficulty of solving the blockchain algorithm is inversely proportionate to the expense of the cryptos （Balance ?× Holding time）, which means the longer the time period of staking a token, the easier it is to be rewarded more.