Ethereum 2.0. Merge Explained: What Is It and Why Does It Matter?
Sep 2, 2022
Ethereum is the world's second-largest cryptocurrency (and blockchain) by market capitalization.
Unlike Bitcoin, the Ethereum network is Turing complete. This “Turing” capability allows the Ethereum network to store both transactions and code. This is in contrast to the Bitcoin network, which can only store transactions.
However, the current state of the Ethereum network leaves a massive carbon footprint. Additionally, the fees to transact on the networks are high and the transactional output is low.
The upcoming Ethereum Merge, known colloquially as the “The Merge”, will represent the most significant upgrade ever to the Ethereum network. The goal of this upgrade is to Merge Ethereum’s current proof-of-work consensus mechanism with a new proof-of-stake mechanism called the Beacon Chain.
Let’s first explore the principle differences between these two consensus mechanisms:
This marked change in the plumbing of the world's second-largest blockchain network comes not without risks - so why did the Ethereum community agree on a transition to proof-of-stake?
Let’s find out.
The Merge is chiefly happening to increase transaction throughput on the Ethereum network. This increase in throughput, however, will mainly be realized down the road in 2023. The Merge is simply opening the door for these later upgrades to happen.
One of the immediate benefits of the Merge will be a reduction in the amount of energy required to secure the network. Under the current proof-of-work consensus mechanism, Ethereum uses ~112 TWh of energy per year. That's on par with the Netherlands.
Post Merge, the energy required to run Ethereum will be reduced by 99.95%.
This dramatic reduction in energy consumption will also make Ethereum ESG compliant. This may help give regulators the push they need to provide much-needed regulation in the crypto industry.
As we said before, the Merge will open the door to further Ethereum upgrades down the road. The more prominent of these planned upgrades include “sharding”.
Sharding will work with layer 2 rollups to dramatically increase transaction output and reduce the “gas fees” users pay to transact on the Ethereum network. The high gas fees at Ethereum today are a hindrance to the wide-scale adoption of cryptocurrency and decentralized finance (DeFi).
Moreover, sharding will democratize the process of validating, allowing anyone with a computer (or even a phone) to validate transactions and reap the benefits of staking.
The Ethereum shift to proof-of-stake will take place in two stages:
The sharding of the Ethereum network is expected to take place sometime in 2023. This will be the main value-add of the transition as it will be the mechanism that allows for higher transaction output and lower gas fees.
The main risk of the Merge is that it does not go smoothly. Even if this does indeed happen, the network can simply revert to a previous state.
Jack Niewold, the founder of Crypto Pragmatist, tweeted that this outcome would require Ethereum to, “...restart pre-Merge. It’d be a real headache, but not the end of the world.”
Though Jack does not see the Merge as all roses. He went on to liken the Merge to, “...changing your car’s engine from gas to electric, all while speeding down the highway.”
Jack’s main concern was a “civil war” like outcome within the Ethereum ecosystem.
Current Ethereum miners have invested a lot of resources into hardware to mine Ethereum in its current state. If the Merge goes ahead as planned, this may render their investments obsolete as anyone with a computer will be able to validate.
In this scenario, Jack says “Ethereum has one chain that goes forward on Proof of Work, while the Merge goes straight ahead, effectively splitting it into two.”
This potential (albeit unlikely) outcome would certainly be unfavorable to Ethereum.
Assuming everything goes smoothly, the Merge will represent a positive change to the Ethereum network. However, this does not necessarily imply that the price of Ethereum will rise in value.
It is important to remember that, aside from insiders, nobody can predict what will happen in any market. Be suspect of any scams that may try to get you to “invest” during the Merge.
Additionally, if you hold crypto in a non-custodial/self-custody wallet, never reveal your private key or seed phrase to anyone.
Only hard forks produce new coins. The Ethereum Merge is simply an upgrade. Therefore, no new coins will be created. Your ether will remain under the ETH symbol post-Merge.
The actual name of the network, however, will change from Ethereum to Ethereum 2.0.
Though Bitcoin will not be directly affected by the Ethereum Merge, the network may indeed experience elevated volatility while the Merge is taking place. This may also be true of all cryptocurrencies.
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