Data Sampling

Definition ∞ Data sampling in blockchain technology involves a method where network participants verify only a small, randomly selected portion of a larger data set, rather than processing the entire dataset. This technique is employed to reduce the computational and storage requirements for validating blockchain data, particularly for light clients. It relies on cryptographic proofs to ensure that even a sample can reliably attest to the integrity and availability of the complete data.
Context ∞ Data sampling is a core component of scalability solutions, especially for rollups and data availability layers on blockchains like Ethereum. News reports often highlight its role in enabling more decentralized and resource-efficient verification, allowing a broader range of devices to participate in network security. The progress and challenges related to implementing efficient data sampling mechanisms are critical for achieving greater network scalability and maintaining decentralization as blockchain data volumes increase.