Introducing FAST RPC

Ethereum infrastructure platform Primev has launched a new technology designed to dramatically speed up transaction feedback on the network. The solution, called FAST RPC, provides users with a “preconfirmation” in under 200 milliseconds, signaling that a transaction is highly likely to be included in an upcoming block.

This development aims to improve the user experience for a wide range of activities, from simple Ether (ETH) transfers and minting non-fungible tokens (NFTs) to interacting with complex smart contracts. A Remote Procedure Call (RPC) acts as a messenger, connecting crypto wallets to blockchain nodes so they can communicate and send transactions. Primev’s FAST RPC enhances this connection for near-instant feedback.

It’s important to distinguish this from final confirmation. A preconfirmation is an early assurance from a block builder, while final block inclusion is when the transaction is officially recorded on the blockchain.

A New Standard for Speed

The sub-200ms response time puts the user experience on par with high-speed layer-1 blockchains like Sui, where transactions often confirm within a similar timeframe. This innovation addresses one of the common pain points for Ethereum users: the perceived lag between submitting a transaction and receiving confirmation.

To showcase the technology, Primev founder Murat Akdeniz posted a live demonstration on X. The video showed a near-instant ETH transfer using a MetaMask wallet, which was preconfirmed in just 377 milliseconds and successfully included in the very next block. Akdeniz noted that his team has been developing this capability for over two years with the goal of “supercharging Ethereum” to these speeds.