Proof of Work vs. Proof of Stake Proof-of-Work PoW or proof | Lucky Hacker™

Proof of Work vs. Proof of Stake

Proof-of-Work
PoW or proof of work is a special protocol that aims to deter cyber-attacks such as DDoS (distributed denial-of-service attacks).

Proof-of-Stake
Proof of stake (PoS) is a type of consensus mechanism which is used to validate transactions on the blockchain.

Proof-of-Work
Any hacker needs to gain more than 50% of total computational power to perform a 51% attack.

Proof-of-Stake
Hackers must own more than 50% of all cryptocurrencies on the same network, which is impossible.

Proof-of-Work
The mining probability depends on the computational work done.

Proof-of-Stake
A new block’s validity depends on the size of the stake.

Proof-of-Work
Miners receive rewards for complex solving cryptographic problems.

Proof-of-Stake
The validator does not receive a block reward. Instead, they only collect network fees as their reward.

Proof-of-Work
Requires powerful and up-to-date mining hardware.

Proof-of-Stake
Requires server-grade unit for efficient processing.

Proof-of-Work
PoW is the original cryptographic consensus mechanism originating long before PoS.

Proof-of-Stake
PoS was derived from PoW, but it comes with several improvements.

Proof-of-Work
To achieve more scalability, all nodes within a transaction are involved.

Proof-of-Stake
The entire network is not involved in the verification of every transaction.