The Ethereum Merge: What You Need to Know | ArenaCFx

What is the Merge?

Why is it called the Merge?

Ethereum’s full transition to PoS requires merging the Beacon Chain (called the “Consensus” layer) with Ethereum’s PoW mainnet (the “Execution” layer).

How does proof-of-stake (PoS) differ from proof-of-work (PoW)?

In today’s PoW system, Ethereum miners compete to publish blocks by racing to solve cryptographic puzzles, much like in Bitcoin.

In the upcoming PoS system, validators that stake (lock up) at least 32 ether (~$50,000) with the network are randomly selected to create blocks. The more ether one stakes, the more likely one is to be selected.

In both systems, the miner/validator that wins a block is rewarded with a mix of transaction fees and newly minted ether (ETH). PoS validators also receive rewards for doing other activities to help secure the network.

Will Ethereum fees decrease after the Merge?

Ethereum transaction fees are not expected to change as a result of the Merge. Future network updates, like danksharding and proto-danksharding, may help to address Ethereum’s high network fees, but these updates are not expected until 2023 at the earliest.

The main salve for Ethereum’s transaction fee woes remains rollups — third-party networks like Arbitrum and Optimism that bundle transactions and process them separately from Ethereum’s mainnet.

Will Ethereum transaction speeds increase after the Merge?

On average, Ethereum blocks are issued once every 13 or 14 seconds in today’s proof-of-work (PoW) system. After the merge, proof-of-stake (PoS) blocks will be issued in regular 12-second intervals. This is not an improvement that most users will notice, and it still places Ethereum behind rival blockchain networks like Solana and Avalanche (though well ahead of Bitcoin, where a new block is mined every 10 minutes on average).

Will the Merge increase the price of ether (ETH)?

With so many variables and unknowns, it is impossible to predict what will happen to Ethereum’s token price as a result of the Merge.

The Ethereum community has for years positioned the Merge as a massive upgrade to the network’s core technology. Along with addressing concerns about the network’s environmental impact, PoS will introduce a new form of utility for Ethereum’s native ether (ETH) token in the form of staking.

But the Merge is not guaranteed to boost the ETH price. The Merge will also introduce changes to the rate at which ether is issued and how it is distributed. These changes could be positive or negative depending upon whom you ask. There is also a risk (however small) that the Merge will fail, or that PoS will prove less secure than PoW.

There is also speculation the Merge has already been priced in by the market.

Is proof-of-stake better than proof-of-work?

According to the Ethereum Foundation, the nonprofit that funds Ethereum ecosystem development, PoS will cut Ethereum’s energy usage by around 99.95%. PoS advocates also argue that PoW mining centralizes control in the hands of those who can afford to buy fancy crypto mining rigs, called ASICs. They say PoS — which hands network control to those who “stake” crypto with the network — makes attacks economically infeasible and self-defeating.

PoW proponents counter that PoS staking carries its own centralization and security risks, making it possible for malicious actors to directly “buy” control of the network. They also point out that PoS is a less battle-tested system than PoW, which has proven resilient as the backbone of the two largest blockchain networks.

When is the Merge happening?

Why no hard date? Each block on Ethereum’s PoW network carries a difficulty number representing how hard miners must work to add it to the network. Instead of kicking in at a specific date, the Merge is scheduled to take effect once the cumulative difficulty of all mined Ethereum blocks hits a certain number — the “total terminal difficulty” (TTD).

In August, Ethereum’s core developers set the TTD at 58,750,000,000,000,000,000,000, which will be reached sometime around Sept. 14 or 15. We only have an estimate because block difficulty and issuance rate vary over time.

Can I become an Ethereum validator or staker?

It is already possible to “stake” 32 ether and earn rewards for validating Ethereum’s PoS Beacon Chain. Staked ether will accrue network rewards, but it will be impossible to withdraw until an update expected around six to 12 months after the Merge.

Staking requires some know-how; if you screw up or go offline, your stake can be “slashed” (ie, reduced).

Those with less blockchain expertise can stake via centralized services like those offered by Coinbase (COIN) or Kraken. In addition to handling the technical nitty-gritty, these services — in exchange for a cut of users’ rewards — open up staking to those with less than 32 ETH.

Also popular for those with less than 32 ETH are liquid staking pools like Lido and Rocket Pool. When users stake via these services, they are handed “staked ETH” tokens which trade at a slight discount to regular ETH.

What will happen to the staked ether after the Merge?

At that point, those who have staked ether themselves will be able to withdraw their stake, along with whatever rewards it has accrued.

Those who stake via centralized staking services or pools will need to keep an eye out for announcements on how withdrawals will be handled.

Will Ethereum users or ETH holders need to take any action after the Merge?

If you hold ether (ETH) today, you won’t need to claim new “PoS ETH” or “ETH2” tokens. Your balance will remain exactly the same after the Merge, and you’ll be able to resume using the network as if nothing has changed.

While Ethereum users will not need to take any action come the Merge, Ethereum software providers and node operators (the computers that operate the Ethereum network) will need to update their software to ensure they are communicating with the latest version of the network.

What’s all this noise about PoW “forks”? Will I receive free money if I hold ETH?

If you hold ETH before the Merge, you may automatically receive a balance of tokens on these new PoW forks. The process of claiming these tokens will differ depending on the chain. If you hold ETH on a centralized exchange like Coinbase, the exchange will need to list forked tokens in order for you to claim your share (and it’s not at all clear if they will).

But buyers beware. Some forked ether tokens might have value immediately following the Merge, but leaders in the Ethereum community warn that PoW Ethereum forks will just be thinly veiled cash grabs.

Can the Merge fail?

Ethereum’s transition from proof-of-work to proof-of-stake will mark the first experiment of its kind. If the Merge succeeds, it will represent a massive feat of engineering and human coordination. If it fails, it risks wiping out hundreds of billions of dollars in value (ether’s market cap is close to $200 billion, and many other valuable tokens are built on top of the network).

The Merge is only now moving forward because its core developers and other stakeholders have run through over a dozen successful tests and Merge simulations. There’s still a chance that the Merge might fail, but such an outcome seems extremely unlikely.

Will the Ethereum network “pause” as a result of the Merge?

The Merge will happen instantaneously after the final PoW block is mined. From that point forward, the network will continue to operate with the issuance of the first PoS block.

Ethereum users will not need to take any action to upgrade to the PoS chain.

What’s on the Ethereum roadmap after the Merge?

One focus for developers post-Merge will be sharding, which aims to expand Ethereum’s transaction throughput and decrease its fees by spreading network activity across several “shards” — almost like lanes on a highway. (Updates of this sort were initially slated to accompany the Merge — originally called “Ethereum 2.0,” or “ETH2” — but were deprioritized with the success of third-party rollups at addressing some of the same problems).

Also on the roadmap is enshrined proposer builder separation (PBS), which will separate the “builders” that add transactions to blocks from the “proposers” who put them forward for approval from the wider network. PBS is pitched as a way to help tackle Ethereum’s maximal extractable value (MEV) problem.

What happens to proof-of-work miners after the Merge?

For those who wish to put their mining hardware to continued use, they’ll need to move to another proof-of-work network, like Ethereum Classic.

After the Ethereum Merge, some miners also plan to create a “forked” version of the proof-of-work blockchain — basically, a clone of the blockchain that still runs using the old miner-friendly system. It is unclear whether these chains will gain enough traction to become lucrative for miners in the long term.

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