Open-source AI trust language LOOM now compiles safety guarantees to WebAssembly

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A solo developer building LOOM, an open-source language designed as a trust layer for AI-written code, has reached a milestone on Day 8 of the project by achieving full WebAssembly compilation. Unlike most languages that lose their safety properties during compilation, LOOM carries its trust guarantees — including effect discipline and provenance tracking — all the way down to the WASM backend. The project now passes 365 machine-checked tests, up from 333, verified across interpreter, Python, JavaScript, and WebAssembly targets. A tagged ABI was introduced to resolve pointer-versus-integer ambiguity in WASM's type system, enabling structured runtime values like records and closures. The project is built and maintained from Ukraine, with code published under the MIT license.

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