Private Transaction Relayers

Private transaction relayers are services that allow users to send transactions directly to validators or block builders, bypassing the public mempool. This is primarily done to protect transactions from being frontrun or sandwiched by MEV searchers.

By keeping the transaction private until it is included in a block, the user ensures that their trade is executed at the intended price without interference. This is becoming a standard feature for professional traders and institutions in DeFi.

These services create a walled garden within the blockchain, which has both benefits and drawbacks for decentralization. While it improves the user experience for traders, it can also lead to a more centralized and opaque transaction sequencing process.

It represents a significant shift in how transactions are handled and highlights the ongoing struggle for fairness in public networks.