Zero-knowledge proofs (ZK) are shifting from a scaling tool to a core pillar of verifiable blockchain computation. They now span three key areas: scalability (Rollup, zkEVM, zkVM), privacy (payments, governance, identity), and interoperability (cross-chain, data proofs). RISC Zero, built on the open RISC-V standard, offers zkVM, Steel coprocessor, Bonsai network, and Boundless proof marketplace, creating a full stack from execution to marketization. Boundless turns ZK computation into a tradable