Summer is about ZK proving its place. It went from a niche to the foundation for trustless AI, cross-chain liquidity, and universal compute. The shift is driven by builders who are using proofs to validate transactions, secure data, bridge networks, and even verify AI outputs. These four projects stand out in this ZK summer: 1) @cysic_xyz - the decentralized proving layer for the entire ZK ecosystem. It turns hardware (GPUs & ASICs) into a distributed network for cost-effective proof generation and verification. They're lowering the barrier for any project needing ZK compute. 2) @boundless_xyz - decouples execution from consensus using ZK proofs. It turns complex, high-throughput computation into succinct proofs verified on any chain. This enables expressive applications to scale beyond gas and block size limits while rewarding provers through open-market incentives. 3) @union_build - ZK-powered messaging and bridging layer designed to move assets and data. It eliminates trusted middlemen, applying ZK and BLS signatures to bring fast, secure, and future-proof cross‑chain communication to everyone. 4) @NetworkNoya - integrates AI into DeFi using ZK machine learning. Its AI agents autonomously manage liquidity, collateral, and yield strategies across multiple chains while publishing ZK proofs of their decisions. ZK Summer is about proving what’s possible. From trustless AI agents and verifiable compute to cross-chain liquidity and bridging, these projects show how ZK moves us into real user-facing systems. The future is onchain, and it's proven.