Zk audits and zero-knowledge security

In zero-knowledge systems, trust starts before a verifier returns true. A zk audit reviews cryptographic design, circuits or zkVM code, and proof enforcement across on-chain and off-chain components-so your protocol launches safe and reliable.

What is a zero-knowledge proof audit?

A zero-knowledge proof audit (zkp audit)secures every layer of your protocol:

Protocol soundness – assumptions and threat model

Circuit correctness – constraint validation for reliable proofs

Privacy – no sensitive data leaks through inputs/outputs

Verifier integration – calldata, parameter pinning, off-chain consistency

Operational safety – key management, ceremonies, upgrades

Where a smart contract audit validates state, a zk audit validates computations and how they’re enforced.

Ecosystem & language expertise

Nethermind is embedded in the leading zk ecosystems - combining cryptographic research with production-level auditing.

Noir zk audits

As an Aztec partner, we align with Barretenberg flows. Reviews cover types, gadgets, Nargo/NoirJS workflows, and production constraints.

Starknet audit

A recognized provider, with work on Starkgate, AVNU, Ekubo. We target Sierra→CASM correctness, Poseidon usage, account abstraction, and L1↔L2 messaging.

zkSync audits and verification

We formally verified the zkSync verifier (EasyCrypt) and serve on the zkSync Security Council, aiming to provide unmatched assurance.

Scroll audits

Focus on EVM-equivalence, RLP/ABI decoders, ROM vs EVM mismatches, and hash gadget constraints to prevent spoofed encodings.

Audit coverage across the zk stack

Few firms cover as much of the zk stack as Nethermind Security:

zkVMs – RISC Zero, SP1

zk DSLs – Noir, Circom, Cairo, O1.js

Smart contracts – Solidity (EVM), Soroban

Supporting languages – Rust, TypeScript, Python

This breadth means we don’t just secure circuits - we validate the entire path from computation to proof verification.

Get in touch!

Choose Nethermind for zk audits backed by ecosystem trust, formal verification, and full-stack coverage. Our team combines cryptographic research with hands-on experience across leading zk ecosystems, to help ensure your protocol is both sound and production-ready.