Ethereum’s Merge One Month Later: What Changed?

One month after Ethereum’s Merge on September 15, 2022, the biggest change was behind the scenes: Ethereum stopped using proof-of-work mining and began relying on proof-of-stake validators to agree on the chain. For everyday users, Ethereum still worked as Ethereum. ETH remained the currency, wallets and addresses did not need replacing, and the Merge did not itself make transactions cheaper or substantially increase capacity.

The main differences were:

• No more Ethereum mainnet mining. Validators, rather than miners competing with computing power, proposed and confirmed blocks.
• Much lower energy use. Ethereum no longer needed energy-intensive mining to secure its main chain.
• Less new ETH issued to secure the network. Validator rewards replaced miner issuance, but the effect on total supply also depended on transaction-fee burning.
• Staking withdrawal was not yet available. In October 2022, ETH deposited to become a validator remained locked.

If you held ETH, you generally did not need to take action. The Merge was a protocol upgrade, not a coin migration. The practical task was to ignore claims that you had to move ETH or claim a replacement token.

Ethereum had operated with two pieces of infrastructure before the Merge. The execution layer handled transactions and smart contracts; the Beacon Chain had been running proof of stake alongside it. The Merge connected Ethereum’s existing execution layer to the Beacon Chain’s consensus system. It did not create a separate Ethereum network for users to move to.

Before the upgrade, miners used computing power to compete to add blocks. After it, validators staked ETH and took turns proposing blocks, while other validators attested to the chain they considered valid. The protocol can penalize validators that break important rules, including by taking some of their stake in serious cases. This is called slashing.

That distinction matters because “Ethereum 2.0” was sometimes used as if it meant a new chain or token. The Merge did not require holders to exchange ETH, change their wallet address, or send funds to a migration service. If an exchange or wallet handled the upgrade, users still held ETH on Ethereum; the network’s consensus mechanism had changed underneath the applications.

For a typical user, the Merge was closer to a major network software upgrade than a personal account change. The key was to use the right network and avoid signing transactions prompted by unsolicited “migration” messages.

Ethereum miners stopped producing blocks for the main network when the Merge took effect. Their role was replaced by validators, who participate by staking ETH and running Ethereum software. This changed the network’s security model: instead of relying on miners’ computing power and energy expenditure, proof of stake relies on staked capital and validator behavior.

It did not mean every former miner disappeared from crypto. Miners could redirect equipment to other proof-of-work networks, and separate chains or forks could continue under different rules. Those were distinct from Ethereum’s proof-of-stake mainnet. A token or network using Ethereum’s name was not automatically the canonical Ethereum chain.

Running a solo validator was not a casual, zero-cost activity. At the time, the protocol required a 32 ETH stake for a validator, along with suitable hardware, reliable connectivity, and ongoing software maintenance. Validators could earn rewards, but could also miss rewards if offline and face penalties for certain faults. Pooling through a service offered a lower operational barrier, but added service, custody, smart-contract, or liquidity risks depending on the arrangement.

If you did not want those responsibilities, you did not need to stake. Simply holding ETH remained possible, and the Merge did not automatically enroll holders in validation or pay them rewards.

The Merge sharply reduced Ethereum’s energy use because the mainnet no longer depended on miners running large amounts of computing equipment to compete for blocks. Ethereum’s proof-of-stake design was widely estimated to use about 99.95% less energy than its proof-of-work system. That was a major environmental change, though it did not mean Ethereum’s energy use became literally zero: validators still run computers and network infrastructure.

The change also altered the way the network was secured. Proof of work required miners to spend resources on electricity and hardware. Proof of stake instead required validators to commit ETH and follow protocol rules. These systems have different trade-offs; the energy reduction alone does not establish that one is risk-free or immune to concentration.

For users and businesses, the reduced energy footprint could make Ethereum’s operation easier to describe as less energy-intensive. It did not automatically make every application on Ethereum environmentally neutral. Devices, data centres, bridges, exchanges, and other services still have their own resource use, and the Merge changed Ethereum consensus rather than every part of the crypto ecosystem.

A useful one-month takeaway was therefore specific: Ethereum’s main chain had made a substantial reduction in consensus-related energy use, but the upgrade was not a general-purpose fix for every environmental concern associated with using crypto.

The Merge did not give Ethereum more block space by itself. It was a change to consensus, not a capacity upgrade, so it did not promise a large jump in transactions per second. It also did not directly reduce gas fees. Gas prices continued to move with demand: if many people wanted to use Ethereum at once, they still competed for limited block space.

That meant an ETH holder or app user could still see a high transaction fee after the Merge. A swap, NFT interaction, or smart-contract transaction could cost more during a busy period than during a quiet one. The fee also depended on the transaction’s complexity, not only on the value being transferred.

To manage costs, check the estimated fee in your wallet before approving a transaction. If it is too high, you can wait and check again later, or compare whether an application supports another network that fits your needs. Using another network introduces its own considerations, including bridge, wallet, and application risks; it is not automatically cheaper or safer in every case.

The Merge was part of Ethereum’s longer technical development, but it should not be confused with later changes intended to affect scaling or user costs. One month on, the sound expectation was continuity in fees and capacity, not an instant cheaper or faster Ethereum.

The Merge reduced how much new ETH the protocol issued to reward network security. Proof-of-stake validators replaced proof-of-work miners, and validator rewards required less new issuance than the previous mining model. That put downward pressure on the rate at which new ETH entered circulation.

It did not make ETH’s supply automatically shrink. Ethereum also burns a portion of transaction fees under rules introduced before the Merge. Whether total supply rises or falls depends on the balance between new issuance and the amount burned. Fee burning varies with network activity, so the Merge alone could not guarantee that ETH would be deflationary at every point.

Staking also did not become freely withdrawable on Merge day. One month later, ETH staked on the Beacon Chain and the rewards associated with it remained locked; withdrawals were not enabled until a subsequent network upgrade in 2023. That timing mattered if you were considering staking around the Merge: rewards were not the same as immediately accessible cash, and liquid staking tokens could trade at a discount or face separate protocol risks.

Do not treat a lower issuance rate as a prediction about ETH’s market price. Issuance describes the protocol’s supply mechanics, not what buyers and sellers will pay. The relevant question for a holder was whether the change in network economics altered their own risk tolerance, not whether it guaranteed a return.

Most ETH holders did not need to do anything for the Merge. Ethereum’s upgrade was coordinated at the network level, and ETH did not need to be swapped into a new version. Wallets, exchanges, and applications needed compatible software, but ordinary users generally continued using their existing accounts and addresses.

If you were checking your setup in the month after the upgrade, use this simple list:

1. Keep your recovery phrase private. No legitimate Ethereum upgrade required you to reveal it or send ETH to a migration address.
2. Confirm the network before a transaction. Make sure your wallet is connected to the Ethereum network you intend to use.
3. Check exchange notices directly. If you held ETH on a custodial exchange, review its own support and deposit status rather than acting on a message or social-media post.
4. Review fees and token details. The Merge did not make gas stable or guarantee that every token or application was safe.
5. Treat staking as optional. Compare lock-up terms, validator or provider risks, rewards, and withdrawal conditions before committing funds.

A staking pool such as Lido can let users receive a liquid staking token rather than operate a validator themselves. That convenience does not remove the risks: reward rates can vary, and the token, contracts, withdrawal process, and market price can all behave differently from ETH.

The most common mistakes after the Merge came from expecting a change it was not designed to deliver or trusting someone who claimed users had to take action. Keep these distinctions in mind:

Assumption	What was actually true one month later
“I need to swap ETH for ETH2.”	ETH remained ETH; there was no required token conversion.
“Gas should now be cheap.”	Fees still depended on demand and transaction complexity.
“The Merge increased capacity.”	The upgrade changed consensus, not transaction capacity.
“Staking means I can withdraw whenever I want.”	Beacon Chain withdrawals were not yet enabled in October 2022.
“Less issuance guarantees a rising price.”	Supply mechanics do not predict market prices.

Be particularly wary of unsolicited messages asking you to connect a wallet, sign a transaction, or share a seed phrase to “activate” a post-Merge balance. A signature can authorize actions even when it does not look like a conventional payment, so read wallet prompts carefully and reject anything you do not understand.

For a present-day reader, the one-month snapshot is historical: Ethereum has had further upgrades since 2022, including the later activation of staking withdrawals. Do not use October 2022 withdrawal conditions as current instructions. Check the current protocol and provider terms before making a staking decision.