Proof of Work vs Proof of Stake: Which Consensus Mechanism Wins?
If you have spent any time around blockchain, you have probably heard people argue about this one topic more than almost any other. Bitcoin miners burning electricity. Ethereum validators locking up ETH. Which one is actually better?
The honest answer is: it depends on what you are optimizing for. Let's break both down properly, look at how they actually work under the hood, and compare them on the things that matter.
The problem both are trying to solve
Every blockchain needs a way for thousands of strangers, who don't trust each other, to agree on a single version of the truth. This is called the consensus problem. Without a central authority, how do you stop someone from spending the same coin twice, or rewriting history to their advantage?
