What Is the Difference between Proof-of-Work and Proof-of-Stake in Security? ▴ Learn

What Is the Difference between Proof-of-Work and Proof-of-Stake in Security?

Proof-of-Work (PoW) secures the network through energy-intensive computation (mining), making a 51% attack prohibitively expensive due to hardware and electricity costs. Proof-of-Stake (PoS) secures the network by requiring validators to lock up (stake) a significant amount of the native coin.

An attacker would need to acquire and risk 51% of the total staked coins, making the attack economically destructive to themselves.

What Are the Primary Differences between Proof of Work (PoW) and Proof of Stake (PoS) Consensus Mechanisms?

What Are the Security Trade-Offs between PoW’S Energy Expenditure and PoS’s Capital-Locking?

What Is the Difference between Proof-of-Work (PoW) and Proof-of-Stake (PoS)?

Compare the Capital Cost of a PoS Attack to the Energy Cost of a PoW Attack