Definition ∞ Validity proof cost refers to the computational and economic expense associated with generating and verifying cryptographic proofs that attest to the correctness of off-chain computations or transactions. These costs include the processing power, memory, and time required by provers, as well as the gas fees incurred for submitting and verifying the proof on the Layer 1 blockchain. It is a critical factor in the economic viability of zero-knowledge rollups.
Context ∞ Validity proof cost is a primary determinant of the efficiency and scalability of ZK-rollups. The ongoing discussion centers on technological advancements that reduce these costs, such as hardware acceleration for proof generation and more efficient zero-knowledge algorithms. Future developments are focused on making validity proofs significantly cheaper, thereby enabling wider adoption and lower transaction fees for users on ZK-rollup networks.
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