Definition ∞ A state compression proof is a type of cryptographic proof that verifies the correctness of a state transition in a system, allowing the compressed representation of the new state to be publicly attested. This proof confirms that a change from one system state to another was valid according to predefined rules. It enables network participants to verify state updates without needing to process all intermediate transactions. This reduces the data required for verification.
Context ∞ State compression proofs are fundamental to the scalability of blockchain networks, particularly for layer-2 solutions like ZK-rollups. They allow a large number of off-chain transactions to be aggregated into a single, verifiable proof that updates the main chain’s state. This significantly reduces the storage and computational burden on the main network. Ongoing research focuses on improving the efficiency and size of these proofs for greater scalability.
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