Users on Scroll, an Ethereum Layer 2 (L2) network, paid more than $50,000 in excess transaction fees over roughly four days after the team behind the project repeatedly raised the parameters that determine how much users pay for posting data to Ethereum, according to an analysis published by L2BEAT.
The overcharges stemmed from six manual increases to two fee multipliers on Scroll's gas price oracle, the smart contract that calculates the Layer 1 data portion of every transaction's cost. Each update raised the previous value by 2x to 10x, compounding to 1,280x the original baseline by April 5, L2BEAT said. On April 9, the team slashed both multipliers by 160x.
The baseline cost for all roughly 139,000 affected transactions would have been just $280. Instead, users collectively paid upward of $50,000, with automated bots accounting for the vast majority.
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