The Merge — small explanation

Ketan Gupta
2 min readSep 20, 2022

Everyone is talking about the merge but what it is?
What are POW (proof of work) and POS (proof of stake)?
Let’s find out:

the merge ethereum
image source: https://ethereum.org/

Proof of work:

It is the underlying algorithm that sets the difficulty and rules for the work miners do on proof-of-work blockchains. This protocol, Ethash, required miners to go through an intense race of trial and error to find the nonce for a block. Only blocks with a valid nonce could be added to the chain.
Read about nonce here

Proof of stake:

where validators explicitly stake capital in the form of ETH into a smart contract on Ethereum. This staked ETH then acts as collateral that can be destroyed if the validator behaves dishonestly or lazily.
One validator is randomly selected to be a block proposer in every slot. This validator is responsible for creating a new block and sending it out to other nodes.

Merge:

Ethereum originally launched a separate proof-of-stake Beacon Chain on December 1, 2020. It was running in parallel with the main Ethereum blockchain.
The Merge refers to the original Ethereum Mainnet merging with a Beacon Chain, now existing as one chain.
The Merge reduced Ethereum’s energy consumption by ~99.95%
official link: https://ethereum.org/en/upgrades/merge/

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Ketan Gupta

Blockchain enthusiast and writer exploring crypto, NFTs and decentralized tech. Providing fresh perspectives and thought-provoking insights. Follow for more.