Definition ∞ Fraud Proof Security refers to a mechanism where network participants can verify the validity of computations performed off-chain and submit a concise proof if a fraudulent operation is detected. This security model allows for efficient scaling by moving complex computations off the main chain, while maintaining integrity through challengeable assertions. If a fraud proof is successfully submitted, the fraudulent transaction is reverted. This system underpins optimistic rollups.
Context ∞ Fraud proof security is a fundamental aspect of optimistic rollup technology, a prominent layer-2 scaling solution for blockchains like Ethereum. News reports frequently discuss improvements and optimizations to fraud proof mechanisms, as their efficiency and reliability are paramount for the overall security of these scaling solutions. The ongoing objective is to reduce the challenge period while maintaining robust defense against invalid state transitions.
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