Understanding Ethereum's Merge and Fork: What Changes Will It Bring to Ethereum?

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Ethereum, the king of public blockchains, has been a hot topic globally, with its Merge and the subsequent hard fork dominating discussions. How will these two major events shape the future of the crypto industry? Let’s dive in.


ETH: Reduced Energy Consumption and Lower Issuance

Declining ETH Issuance

The Merge will slash annual ETH issuance from 4.3% to 0.43%, thanks to the efficiency leap brought by Proof-of-Stake (PoS). Unlike Proof-of-Work (PoW), PoS eliminates resource-heavy costs, relying instead on capital opportunity costs. This shift reduces security expenses, allowing Ethereum to cut issuance dramatically while maintaining robust security. Post-Merge, ETH could enter a deflationary era.

Energy Savings vs. Gas Fees

Post-Merge, Ethereum’s energy use will drop by ~99.95%, aligning with basic computer usage. However, gas fees—driven by block space demand—remain unaffected by the consensus change. Scalability solutions like sharding and Layer 2 will address this post-Merge.

Increased Staker Yields

Stakers currently earn ~4.2% annual interest, but post-Merge, estimates suggest yields could jump to 8.5–11.5%. While unlocked ETH might trigger sell-offs, phased withdrawals (e.g., 1,125 validators/day) will prevent market floods. Higher yields may also attract more stakers.


Ethereum’s Ecosystem: Miners’ Exit and Regulatory Clarity

Miners’ Transition

Post-Merge, PoW miners face obsolescence. Expected shifts include:

  1. Mining alternative PoW tokens
  2. Repurposing hardware for Web3 protocols
  3. Selling equipment to stake ETH in PoS

Technical Upgrades

The Ethereum Virtual Machine (EVM) will be replaced by Ethereum WebAssembly (eWasm), simplifying smart contract development and broadening coding flexibility beyond Solidity.

Regulatory Advancements

The U.S. Responsible Financial Innovation Act clarifies crypto oversight, with the SEC handling securities and the CFTC overseeing commodities. PoS positions ETH as a digital bond, potentially accelerating institutional adoption.


Public Chain Competition

Scenarios:


Hard Fork Explained

A hard fork occurs when consensus rules split the chain, as seen with ETC in 2016. Ethereum’s history includes six non-controversial forks (e.g., difficulty bomb resets). Current debates focus on PoW vs. PoS splits.

Success Factors for a Fork:

  1. Short-term: Miner/exchange support is critical.
  2. Long-term: Forked chains must address scalability (like Ethereum’s original issues) to compete.

Risks:


FAQ

Q: Will the Merge reduce gas fees?
A: No. Gas fees depend on network demand, not consensus mechanisms. Scaling solutions are separate.

Q: Can miners still profit post-Merge?
A: Only by switching to PoS staking or alternative PoW chains.

Q: Is ETH’s hard fork inevitable?
A: Not if consensus holds. Forks require substantial community/developer backing.

👉 Explore Ethereum’s future with OKX

This analysis underscores Ethereum’s pivotal moment—balancing innovation, scalability, and decentralization. The Merge isn’t just an upgrade; it’s a redefinition of blockchain’s potential.