A Simple Guide to KZG Commitments and Why Ethereum Needs Them to Scale

This article demystifies polynomial commitment schemes and explains how KZG lets provers commit to polynomials and later prove evaluations with tiny, verifiable proofs. It then shows how zk-rollups, Proto-Danksharding (EIP-4844), and PeerDAS all rely on these commitments and erasure coding to scale Ethereum’s data availability and proof systems efficiently.