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State Commitment Schemes

Definition

State commitment schemes are cryptographic methods that allow a party to commit to a particular state of data without revealing the entire data, and later prove its integrity. These schemes are fundamental to scaling solutions like optimistic rollups and zero-knowledge rollups, where computations occur off-chain. A commitment, often a cryptographic hash, represents the current state of a system, enabling efficient verification of state transitions on the main chain without re-executing all transactions. This approach significantly reduces the data burden and computational cost on the base layer.