# Security Audit for Meter Passport V2.0 The Meter Passport v2.0 smart contracts were developed on the ChainSafe v2.x bridge contracts. Meter’s additions were mainly focusing on the relay chain signature aggregation design. The original contracts were internally audited through a separate team at ChainSafe. The final version of the smart contracts were audited by HAECHI AUDIT. During the audit, 8 findings of varying severity levels (three critical, two major, and three minor) were found and subsequently resolved ensuring that the codebase is rigorously tested and verified. HAECHI also recommended two tips to improve the codebase’s overall efficiency and usability. You can view the published audit report in full detail [here](https://github.com/meterio/Passportv2Contracts/tree/main/audit). --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.meter.io/passport/security-audit-for-meter-passport.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.