What Is the Risk of Centralization Associated with Using a Limited Number of Private Transaction Relays?

Relying on a small number of private transaction relays can lead to centralization of the block production process. If only a few entities control the private order flow, they gain disproportionate power over transaction ordering and MEV capture.

This undermines the decentralized nature of the blockchain and introduces a single point of failure or censorship risk. It also concentrates the MEV profit among a few actors.

What Are the Potential Censorship Concerns Associated with Private Transaction Relays like Flashbots?
How Does the Concept of Miner Extractable Value (MEV) Relate to Front-Running in Decentralized Finance (DeFi)?
What Is the “Proposer-Builder Separation (PBS)” Model in PoS and How Does It Affect MEV?
How Do Private Transaction Relays like Flashbots Mitigate MEV?
What Is the Risk Associated with Centralized Batching Services?
What Are the Centralization Risks Associated with Private Transaction Relays?
What Are the Potential Centralization Risks Associated with Using Developer-Set Checkpoints?
What Is Maximal Extractable Value (MEV) and How Does It Relate to Private Transaction Relays?

Glossar