Overview

• Ethereum and Solana diverge from Bitcoin with their use of validator pools for transaction validation, offering a mechanism for prioritizing transactions based on gas fees.

• The emergence of Maximal Extractable Value (MEV) bots on Ethereum and Solana has spurred debates on gas fees and transaction manipulation in the crypto space.

The Role of Validators and Gas Fees

Ethereum and Solana adopt a different approach compared to Bitcoin by employing a pool of validators to confirm transactions. This setup empowers users to accelerate transactions by offering higher fees.

Influence of MEV Bots on Gas Fees

The protocol's emphasis on gas fees as a determinant for transaction priority has given rise to sophisticated MEV bots on Ethereum and Solana. These bots exploit vulnerabilities within the system and have become a focal point in discussions on gas fees.

Escalating Debate on MEV Bots

The discussion around validators, gas fees, and the disruptive influence of MEV bots on Ethereum and Solana is intensifying. Mert Mumtaz, the co-founder of Solana RPC provider Helius, shed light on the notoriety of a singular bot named Jaredfromsubway, which dominates the gas fee landscape on Ethereum.

This bot alone accounts for a significant daily volume of 142 ETH in fees, overshadowing major industry players such as Coinbase.

Mumtaz contends that the Ethereum Foundation's failure to subsidize validators indirectly encourages the proliferation of MEV bot operators who exploit retail traders. Ethereum, plagued by scalability challenges, remains the most costly network for transactions. The surge in MEV bot activity, exemplified by Jaredfromsubway, may be exacerbating the issue.

In this context, Mumtaz critiques Ethereum developers for their inability to combat the MEV threat despite extensive research and proposed solutions at various protocol levels.

Contrasting Approaches of Ethereum and Solana

Mumtaz asserts that Solana demonstrates greater efficacy in mitigating the impact of MEV bots on gas fees. Solana actively subsidizes a majority of its validators, a practice absent in Ethereum. This subsidy acts as a disincentive for operators engaging in MEV activities, discouraging such practices.

However, critics argue that Solana's approach merely offers temporary fixes. There are claims suggesting that Solana played a role in the creation and utilization of MEV. Additionally, supporters of SOL holders like Multicoin Capital prioritize blockchain networks based on their potential for MEV capture.

Recent incidents have exposed instances where subsidized validators on Solana facilitated MEV attacks on users through "sandwich" tactics. The swift action taken by the Solana Foundation in removing the stake of these validators raises questions about the efficacy of such measures in curbing MEV attacks.