What Is The EIP-3675 Update?
The EIP update known as 3675 is one of the most important upgrades in the history of Ethereum. This Ethereum Improvement Proposal (EIP) officially enabled the transition from Proof-of-Work (PoW) to Proof-of-Stake (PoS). With this update, the old, energy-intensive consensus mechanism was replaced by a more sustainable and efficient alternative.
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đź•’ 5:46 PM
đź“… Dec 23, 2025
✍️ By chrison2
Key Takeaways
EIP-3675 enabled the transition from Proof of Work to Proof of Stake, forming the technical core of The Merge.
Proof of Work was fully removed, causing miners to disappear and validators to now secure the network by staking ETH.
Ethereum’s energy consumption dropped by more than 99%, making the network significantly more sustainable and environmentally friendly.
Security became economically stronger, as validators risk their staked ETH in cases of error or fraudulent behavior (slashing).
EIP-3675 laid the foundation for future Ethereum upgrades, such as improved scalability and lower transaction costs.
°What is an Ethereum Improvement Proposal (EIP)?
An Ethereum Improvement Proposal (EIP) is an official proposal to improve or modify Ethereum. Developers can propose protocol changes through an EIP, ranging from small optimizations to fundamental upgrades such as EIP-3675.
EIP-3675 was unique because it was not merely a technical improvement, but a fundamental change in how Ethereum reaches consensus. From that point onward, the entire network would operate differently, and miners would also have to transition to this consensus mechanism.
°Why is EIP-3675 so important?
1, Drastic reduction in energy consumption
By transitioning to Proof of Stake, Ethereum’s energy consumption dropped by more than 99%. This made Ethereum significantly more environmentally friendly and reduced criticism of the ecological impact of blockchain technology.
2, Stronger economic security
In Proof of Stake, real capital is at risk. Validators risk their staked ETH if they act maliciously, making attacks on the network economically unattractive.
3,Foundation for future upgrades
EIP-3675 was not an endpoint, but a prerequisite for further scalability solutions such as sharding and other Ethereum upgrades. Without this transition, many future improvements would not have been possible.