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0trust3r edited this page Apr 22, 2026 · 9 revisions

TVM

TVM is an implementation of the Trustless Virtual Machine described in the JAM Graypaper.

This wiki is preserved as the architecture archive for the project. TVM was built as a low-level JAM execution artifact: a Rust JIT assembler and runtime for translating VM instructions into native x86_64 code, managing shared memory, metering gas, and coordinating host-function calls.

The repository is not currently under active development. It is published as a technical showcase and reference artifact from the 2024-2025 JAM implementation work.

Start with Architecture for the assembler/runtime design, gas model, shared-memory layout, and register map.

We use the acronym "pvm" when referencing the vm spec in the graypaper, and "tvm" when referencing its physical implementation.

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