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WaTZ is a trusted WebAssembly runtime environment for ARM TrustZone that enables secure execution with remote attestation. It is a research software artefact that forks OP-TEE OS components and provides a runtime, build scripts, and benchmarks to run WebAssembly inside TrustZone with verifiable remote attestation. The project, authored by University of Neuchâtel researchers, has reproducible results and is associated with a publication in ICDCS 2022.
AI named WaTZ in November 2025.