Primev has introduced FAST RPC, a new technology enabling Ethereum transactions to be preconfirmed in under 200 milliseconds. This advancement allows for rapid transaction processing, including Ether transfers, smart contract interactions, and NFT minting. Preconfirmation provides an early indication that a transaction will likely be included in the next block, enhancing the speed of Ethereum's mainnet operations. Primev's founder, Murat Akdeniz, demonstrated the technology with a live ETH transfer using MetaMask, achieving preconfirmation in 377 milliseconds. While FAST RPC offers significant speed improvements, it has yet to be tested at scale compared to established RPCs like Infura and Alchemy, which handle larger network loads. Despite this, Primev's solution presents a faster alternative for users preferring Ethereum's mainnet over layer-2 solutions.