The Ethereum Merge and Proof of Stake (PoS): What Ethereum Holders Need to Know

The Ethereum Merge involves the transition from a proof of work (PoW) blockchain to proof of stake (PoS). In general, proof of stake offers many advantages in terms of scalability and sustainability.

As Ethereum moves to its new shard structure, the existing mainnet will be migrated. Ether (ETH) holders don't need to take any action, so watch out for scammers who tell you that you need to "transfer" your tokens.

Introduction

Ethereum's change of consensus mechanism to proof of stake has raised an important question for investors: what should you do with the ETH you hold? If you don't properly understand the situation, you may fail to keep your funds safe, so it's important to understand it well. First, let's look at why Ethereum is moving to proof of stake (PoS).

Why Ethereum Is Moving to Proof of Stake

Since its launch, Ethereum has created new blocks of transactions through proof of work (PoW), the same consensus system used by Bitcoin. The proof of work consensus mechanism allows miners to reach consensus without a centralized authority, even when malicious actors try to interfere.

Proof of work, as implemented by Satoshi Nakamoto in the Bitcoin network, provides an effective and reliable way to achieve consensus in a decentralized network. To date, there has never been a successful attack on the Bitcoin network.

However, proof of work has fallen out of favor with some developers and users, for the following reasons.

Energy inefficiency: In proof of work, a malicious actor needs to spend a lot in terms of energy resources to carry out a large-scale attack. This is one way the network is protected, but staking is considered a more sustainable alternative.
Inefficient for smart contracts: Using smart contracts can require many network interactions, which have to be added to blocks and confirmed on the network. Proof of work usually involves longer block times and higher transaction fees, so smart contract interactions are slower and more expensive.
Difficulty of solo mining: Becoming a miner on a popular proof of work system can be hard for individuals, because the mining landscape is dominated by a small number of large mining pools. This can lead to the centralization of mining power, making it difficult for individual miners or small pools to compete.
Limits to scaling: As a network becomes popular, the number of pending transactions grows. Proof of work networks have a limited block size that can only include a certain number of transactions. During periods of heavy traffic, users may have to wait hours or even days for their transactions to be added to a block and processed.

With the launch of Ethereum 2.0, the network is moving to proof of stake, and the need for mining has disappeared. The goal is to improve Ethereum's scalability and give users additional benefits.

Pros and Cons of Proof of Stake (PoS)

Proof of stake (PoS) is a popular choice for new blockchain networks. It has several notable advantages and offers good accessibility and scalability. It has drawbacks too, but they are minor compared to its advantages.


Pros of proof of stake	Cons of proof of stake
Ordinary users of a proof of stake network can take part in the validation process with just the network's native token.	Power can still be concentrated among large token holders.
It requires less energy.	It hurts profitable mining businesses.
Transaction and confirmation times are faster.	Some critics argue that proof of stake is less secure than proof of work, which reaches consensus by solving cryptographic puzzles.

Ethereum's Journey to Proof of Stake

The transition to proof of stake can't happen all at once. Over the course of several years, Ethereum has begun successfully moving to its new shard structure. The journey can be divided into a series of phases. Ethereum no longer officially uses this phase structure, but to make things easier to understand, we'll use it here to explain.

Phase 0: Launch of the Beacon Chain

In Phase 0, Ethereum's Beacon Chain, the proof of stake blockchain that manages all of Ethereum's shards, is launched. More specifically, the Beacon Chain organizes validators and the staking process, creates validator committees, manages consensus, and carries out other key tasks.

Introducing Sharding (Phase 1)

In Phase 1, the single Ethereum blockchain is split into 64 sharded blockchains. These blockchains are managed by the Beacon Chain launched in Phase 0. Over time, however, Ethereum began focusing on the Merge before implementing sharding.

The Merge (Phase 1.5)

Phase 1.5, also known as the Merge, connects the Ethereum mainnet to the new proof of stake system. Smart contracts from the old Ethereum mainnet can be used on the new Ethereum network, and the Beacon Chain officially produces blocks.

Phase 2

In Phase 2, shards become fully functional so they can create new transactions and smart contracts. Phase 2 is the last phase planned in advance, and Phase 3 is expected to focus on fixing any issues that arise after the launch of Ethereum 2.0.

What Happens to the Ether You Hold?

In short, you don't need to do anything with the ether (ETH) you hold. Ethereum will transition to Ethereum 2.0 through a series of phases. If you staked ETH in Binance's Ethereum 2.0 staking product and hold BETH, you can exchange it for ETH after the Merge.

Vitalik said that unlocking will take place about six months after the Merge. BETH is a wrapped token. It is pegged 1:1 to ETH and distributed to users who have locked their ETH on Binance. This gives stakers liquidity to use an ETH-based asset while their funds are locked. If they wish, users can exchange their BETH back for ETH.

Expectations from Users and the Community

Many people are looking forward to Ethereum's move to proof of stake. Alongside almost every new blockchain that now uses proof of stake, Ethereum has solved many problems. The network is also overcoming its earlier limitations thanks to the benefits of the new consensus mechanism.

Because proof of stake is more environmentally friendly, Ethereum also addresses criticism related to its energy use. Overall, this could help improve the image of the blockchain world in general.

Conclusion

Ethereum's proof of stake will bring users a range of benefits, such as faster and cheaper smart contract transactions and reduced energy use.

ETH holders don't need to do anything during the Ethereum Merge. So be wary of anyone who tells you that you need to "transfer" your ETH to the new network or "connect" it to the network.