Ethereum network fees climbed to their highest levels since April as a sudden burst of on-chain activity swept the ecosystem in the aftermath of the Binance hack. Decentralized exchange trading and MEV bot fees were the main drivers of the spike across the chain.

Ethereum block builders profited heavily from the $6.3 billion Binance hack, the largest theft event in the history of crypto. The episode showed that decentralized platforms were extremely resilient and even benefited from the increased activity. The initial movement of funds out of the Binance wallet was one source of fees, but the hack also opened new trading opportunities, decentralized liquidations, and other on-chain transfers.

Most of the block builder fees came from activity in stablecoins, as well as Ethereum's leading applications and protocols. The hacker also had to swap a portion of the stolen assets for ETH, requiring the services of block builders to forge priority transactions. MEV bots moved in, pushing those transactions to block builders with high fees attached. MEV, short for maximal extractable value, describes the profit captured by deciding which transactions make it into a block and in what order — a competition that intensifies whenever users rush to gain priority over one another. Block builders then pay validators a share of the fee and keep the remainder as revenue, X analyst @0xNairolf explained.

Ethereum breaks above $56M in daily fees

The inflow of activity generated more than $44.25 million in daily fees on the day of the hack, and $56.4 million over the following 24 hours. As of October 30, activity was still elevated, with more than $10 million in fees recorded at the time of writing.

Titan Builder, the leading block builder in recent months, absorbed the largest share of the surge, taking in $24.65 million in fees over the past 24 hours — meaning validators will also receive a sizable portion of the additional income. Fee income of this kind is a core component of validator economics, tying the network's security budget directly to levels of on-chain activity.

The Ethereum chain alone recorded more than $10 million in daily fees, while Uniswap emerged as the main trading venue, also logging over $10 million in fees, according to DeFi Llama data.

The mix of smart contracts and applications on Ethereum also shifted as of October 30. KyberSwap became the leading aggregation router, burning 92.58 ETH in fees. Several unknown smart contracts displaced USDT and USDC as the leading gas burners, while ETH transfers alone burned 72.8 ETH over the past day.

At the same time, ETH gas fees remain under $0.01, as only specialized traders and whales rushed to perform transactions and swaps — leaving routine transfers inexpensive while priority access carried a steep premium. The increased activity also drove blob fees — the price of the dedicated block space that layer-2 rollups purchase to post data back to Ethereum — to a one-month peak, after weeks of almost zero demand for blob space. Usage of L2 chains, especially Arbitrum, was linked to some of the stolen assets and attempts to bridge them to Ethereum.

Binance hack fuels ETH arbitrage

Following the hack, ETH was used as an exit asset, mirroring patterns seen in other large-scale exploits. As a result, ETH prices showed significant disparity across venues. On decentralized markets like Uniswap, ETH traded as high as $2,700. Other data points — including X posts from Lookonchain, Peplord, and JobbaTrades — indicate anomalous on-chain pricing as high as $3,300, though those levels were not offered at all on centralized markets. Gaps of that size are what draw arbitrage traders, who buy where an asset is cheaper and sell where it commands a premium, generating further on-chain transactions and fees in the process.

On other markets, the price settled at around $2,223.25, based on Cryptorank data, adding pressure on derivative markets. The elevated decentralized price was mostly driven by attempts to swap tokens. At the same time, the ETH crash is creating liquidation risk for whales that positioned themselves while ETH was still more bullish. Liquidations of leveraged positions are themselves executed as on-chain transactions, one of the fee-generating flows the hack set in motion.

ETH is down 17.2% in October to date following its recent crash and is on track to close its worst October since its inception in 2016.

The crash dragged the fear and greed index, a widely followed sentiment gauge, down to 28 points, solidly in fear territory. ETH is closely watched for whether it holds $2,200 as a support level. Losing that level is seen as a signal for sinking below $2,000. Alongside those price levels, the movement of the remaining stolen funds through bridges, DEXs, and L2s remains a focal point for on-chain observers, since those flows are already shaping where fees and liquidity concentrate.