StarkWare has deployed its S-two prover on the Starknet mainnet, marking a significant upgrade in speed, privacy, and decentralization. The new open-source prover is touted as the fastest and most privacy-preserving proof system in a global production environment. It replaces the network's original proof components, generating validity proofs for each block to reduce proof time and verification costs while enhancing throughput and scalability. The S-two prover allows independent operators to contribute computing resources, bolstering the network's censorship resistance. Notably, it can run on consumer-grade hardware, enabling users to generate privacy proofs from laptops, mobile phones, and browsers. This capability supports large-scale privacy protection, allowing users to verify facts without revealing sensitive data, and opens new possibilities for privacy-focused DeFi, anonymous identity authentication, verifiable AI, and zero-knowledge secure gaming.