According to Odaily Planet Daily, StarkWare has deployed its next-generation open-source S-two prover on the Starknet mainnet, which the company claims is the fastest and most privacy-preserving proof system currently in production.

This upgrade replaces the network's previous proof component, now generating a validity proof for each block, reducing proof time and verification costs, while increasing throughput and scalability without sacrificing trustlessness. S-two (short for "STARK Two") generates zero-knowledge proofs 10 times faster than the previous system, enabling previously uneconomical workloads such as real-time transaction engines and zero-knowledge machine learning inference by reducing proof costs and increasing block capacity. (The Block)