In Proof of Stake (PoS), validators are chosen to create new blocks based on the amount of tokens they hold, also known as their "stake". This means that validators with a larger stake have a higher chance of being chosen to create a new block.

Here are some key aspects of PoS:

1. *Stake-based validation*: Validators are chosen based on their stake, rather than their computational power (as in Proof of Work).

2. *Energy efficiency*: PoS is more energy-efficient compared to Proof of Work, as it doesn't require intense computational power.

3. *Faster transaction times*: PoS allows for faster transaction times, as validators are chosen quickly based on their stake.

4. *Lower barrier to entry*: PoS has a lower barrier to entry, as validators only need to hold a certain amount of tokens to participate.

5. *Increased security*: PoS is more resistant to 51% attacks, as an attacker would need to hold a majority of the total stake.

6. *Reward mechanism*: Validators are rewarded with transaction fees and/or a portion of the block reward.

PoS is a popular consensus algorithm for blockchain networks, and is used in many Cosmos-SDK based chains, as well as other blockchain platforms like Ethereum (in its upcoming Proof of Stake iteration).