Ethereum Millisecond Preconfirmations Have Arrived

Key Takeaways

• Ethereum millisecond preconfirmations enable transactions to be preconfirmed in under 200 milliseconds using Primev’s FAST RPC.

• This technology dramatically improves transaction speeds on Ethereum mainnet, rivaling faster blockchains.

• FAST RPC can be easily integrated into popular wallets like MetaMask by replacing default RPC endpoints.

• Though promising, FAST RPC is still new and not yet tested at the large scale of incumbent RPC providers.

• Millisecond preconfirmations improve user experience and maintain Ethereum’s competitive edge in blockchain performance.

What Are Ethereum Millisecond Preconfirmations?

In the world of blockchain technology, a preconfirmation is an early indication from a block builder that a transaction will likely be included in the next block.

Traditionally, Ethereum transactions take anywhere from several seconds to minutes to confirm on the mainnet, depending on network congestion and gas fees.

Source: X (@MuratLite)

Primev’s FAST RPC introduces millisecond preconfirmations, meaning transactions can be flagged and set for block inclusion in just a fraction of a second, specifically under 200 milliseconds. This reduces waiting times dramatically and improves the user experience across various dApps.

The Role Of RPC In Ethereum

Remote Procedure Calls (RPCs) are the communication bridge between crypto wallets and Ethereum blockchain nodes.

They allow users to send transactions and interact with smart contracts. The speed and reliability of RPCs directly impact how quickly a transaction is processed.

Primev’s FAST RPC optimizes this connection, enabling preconfirmations to occur in milliseconds rather than seconds. As a result, users can enjoy near-instant transaction experiences, which were previously only possible on newer or specialized blockchains.

Real-World Demonstration

Primev’s founder, Murat Akdeniz, showcased the FAST RPC capability in a live demo on social platform X.

Using MetaMask, an Ethereum self-custody wallet, he transferred Ether (ETH) with a preconfirmation time of just 377 milliseconds and saw the transaction included in the same block.

This demonstration highlights how FAST RPC can significantly reduce latency on Ethereum mainnet.

How FAST RPC Compares To Existing Solutions

Infura & Alchemy: The Current Market Leaders

Currently, most Ethereum users rely on RPC providers like Infura (built by ConsenSys) and Alchemy.

These platforms are well-established, battle-tested, and serve hundreds of thousands of builders worldwide. Infura supports over 400,000 developers, while Alchemy facilitates more than $150 billion in annual transactions.

However, both Infura and Alchemy typically deliver slower transaction times compared to Primev’s FAST RPC, which prioritizes speed over scale for now.

Trade-Offs: Speed Vs. Scalability

While FAST RPC promises blistering speeds, it hasn’t yet been tested at the massive scale that Infura and Alchemy handle daily. This means some users might prefer to wait until Primev’s solution proves stable under high network demand.

Despite this, FAST RPC offers a compelling alternative for users who want to stay fully on Ethereum mainnet, avoiding the need to migrate to Layer 2 blockchains that achieve speed improvements through different mechanisms.

Why Ethereum Millisecond Preconfirmations Matter

Enhanced User Experience

Faster confirmations reduce friction for everyday users, encouraging broader adoption of Ethereum-powered applications.

Whether you’re trading tokens, minting NFTs, or using DeFi protocols, millisecond preconfirmations make interactions feel instantaneous.

Competitive Edge Against Other Blockchains

Ethereum has faced competition from newer blockchains like Sui, which boasts native transaction speeds around 200 milliseconds.

Sui Network’s TVL Earlier This Year

Source: DefiLlama

By introducing millisecond preconfirmations, Ethereum narrows this gap while maintaining its decentralized security and ecosystem.

Developer Benefits

Developers can build more responsive dApps and improve UX by leveraging FAST RPC, helping Ethereum stay at the forefront of blockchain innovation.

FAQ

What is an Ethereum millisecond preconfirmation?

It’s a technology that signals a transaction is very likely to be included in the next Ethereum block within milliseconds, reducing the typical waiting time for transaction confirmation.

How does FAST RPC improve Ethereum transactions?

FAST RPC optimizes the communication between wallets and blockchain nodes, enabling transactions to be preconfirmed in under 200 milliseconds on the Ethereum mainnet.

Is FAST RPC widely used?

Currently, it is a new solution and hasn’t been tested at the scale of established providers like Infura and Alchemy, but it shows promising speed advantages.

Do I need to pay extra fees to use FAST RPC?

Users must deposit funds into Primev’s gas tank, but this setup helps ensure fast transaction processing without additional unpredictable fees.

Can FAST RPC replace Layer 2 solutions?

Not necessarily; Layer 2s improve scalability differently. FAST RPC focuses on speed improvements on Ethereum’s mainnet.