Ethereum

Chainlink

Reported by The Block, blockchain project Uma has rolled out a solution called Oval, which aims to allow DeFi protocols to capture value that emerges during oracle updates by tapping into what’s known as oracle extractable value — a type of MEV generated when protocols request price updates from an oracle.
MEV involves extracting value by manipulating transaction order in a block on the Ethereum network, often with the aid of automated bots. This type of MEV arises either from the lack of liquidity across different decentralized exchanges or from their front-running each other under certain market conditions.
There is one type of MEV related to oracles, as Uma notes. In the decentralized finance niche — and in protocols such as lending or borrowing — oracles are crucial as they provide external data, like price feeds, to smart contracts. When an oracle update occurs, such as a price feed update, it can create MEV opportunities. For instance, if a lending protocol relies on an oracle for the latest asset prices, there may be a brief window post-update where a trader can leverage this information before the market responds.
“MEV is a major issue for Ethereum, with tens of millions of dollars extracted every year. OEV accounts for a big chunk of that because protocols need price updates,” Uma co-founder Hart Lambur said. “Oval addresses a real problem by helping protocols capture OEV. It’s been a privilege to work with Flashbots’ best-in-class team to bring Oval to mainnet.”
Oval's goal is to enable protocols, such as lending, to utilize this solution to retain and profit from this value rather than losing it to bots. In this setup, MEV searchers participate in an auction system, bidding for the right to access data from Chainlink oracles related to a certain protocol. The auction proceeds then benefit the protocol.

Uma Protocol Introduced Oval Allows DeFi Protocols to Capture Oracle Extractable Value

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