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Coding · Advanced

# Formally verifying compiled WebAssembly modules

Prove correctness and safety properties of compiled WebAssembly code using interactive theorem provers

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Opens BotBento. Paste the prompt into a bot; nothing is preconfigured.

- When something happensBinary module submitted for verification
- ThenConstruct formal specs and execute proof
- ResultVerification report and proof script

Analyze compiled WebAssembly binaries against behavioral specifications to generate formal correctness proofs. The bot examines binary routines, constructs weakest-precondition goals, and attempts to discharge proof goals to ensure software matches intended requirements.

## Prompt to start with

BotBentoRecommended

```
Inspect target WebAssembly functions and draft formal correctness specifications based on module documentation. Use the terminal to execute verification tools and discharge proof obligations. If proof tactics fail, report the unproven subgoals and potential edge cases. Always ask for user approval before pushing proof files or updating repository branches.
```

Copy

## Tools it uses

GitHubTerminalDocs

## Works with

BotBento

## Tags

- wasm
- formal-verification
- lean
- compilers
- security

## Source

[Show HN: Talos – Open-source WASM interpreter for Lean](https://news.ycombinator.com/item?id=48584761)
Hacker News · checked 2026-10-16

Summarized in our own words. Any results described there are the authors’ own, not measured by BotBento.

By BotBento Editorial · Added 2026-10-16 · Updated 2026-10-16 · [Suggest a correction](/contact/)

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