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ZK Circuit Security Audit & Review
In-depth security assessment of custom zk-SNARK/STARK circuits and constraint systems to identify cryptographic vulnerabilities, logical flaws, and implementation bugs before mainnet deployment.
Chainscore © 2026
overview
FULL-STACK BUILD
Custom Blockchain Development
End-to-end blockchain solutions from protocol design to production deployment.
From a private EVM chain for enterprise to a public app-chain with custom consensus, we handle the entire stack so you can focus on your application logic.
- Core Protocol & Consensus: Build with
Substrate,Cosmos SDK, or customEVMimplementations. - Node Infrastructure: Automated deployment, monitoring, and governance for validator networks.
- Cross-Chain Bridges: Secure, audited bridges for asset and data transfer between networks.
- Production Launch: Mainnet deployment with stress testing, security audits, and validator onboarding.
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PROVEN PROCESS
Our ZK Circuit Audit Methodology
A systematic, multi-layered approach to uncovering critical vulnerabilities in your zero-knowledge circuits, from mathematical soundness to implementation flaws.
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Final Report & Remediation Support
Receive a prioritized vulnerability report with CVSS scores and proof-of-concept exploits. We provide direct support to fix all identified issues.
benefits
THE ZK DIFFERENCE
Why a Specialized ZK Audit is Critical
Zero-Knowledge circuits introduce unique cryptographic and mathematical risks that generic smart contract audits miss. Our specialized methodology protects your protocol's integrity and user funds.
01
Mathematical Soundness Verification
We validate the underlying zk-SNARK or zk-STARK proof system, checking for soundness errors, trusted setup assumptions, and potential cryptographic backdoors that could compromise the entire system.
02
Circuit-Specific Vulnerability Detection
Our experts identify logic flaws unique to ZK circuits, including under-constrained constraints, incorrect bit-width handling, and arithmetic overflows within the finite field that could lead to forged proofs.
03
Gas & Performance Optimization
We analyze and recommend optimizations for your circuit's constraint count and prover/verifier gas costs, directly impacting your end-user transaction fees and protocol scalability.
04
Integration & Upgrade Safety
We audit the on-chain verifier contract and the off-chain prover integration, ensuring secure upgrade paths for circuit logic and preventing version mismatch exploits.
Choose Your Audit Depth
ZK Circuit Security Audit & Review Packages
A detailed breakdown of our structured audit packages, designed to match the complexity and risk profile of your zero-knowledge proof system.
| Audit Scope & Deliverables | Starter Audit | Professional Audit | Enterprise Audit |
|---|---|---|---|
Manual ZK Circuit Review (Arithmetic, Constraints, Gadgets) | |||
Plonk / Groth16 / Halo2 Protocol Implementation Review | |||
Cryptographic Primitive & Trusted Setup Analysis | |||
Integration Audit (Smart Contracts, Frontend, Prover/Verifier) | |||
Formal Verification (Key Properties) | Select Components | Full System | |
Detailed Technical Report with Risk Ratings (Low/Med/High/Critical) | |||
Remediation Support & Re-audit of Fixes | 1 round | 2 rounds | Unlimited rounds |
Response Time for Critical Issues | 48 hours | 24 hours | 4 hours (SLA) |
Post-Audit Consultation Call | 1 hour | 2 hours | Ongoing Access |
Public Verification & Attestation on Chainscore | |||
Typical Timeline | 1-2 weeks | 2-4 weeks | 4+ weeks |
Starting Investment | $15,000 | $50,000 | Custom Quote |
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FULL-STACK INFRASTRUCTURE
Custom Blockchain Development
End-to-end blockchain solutions from core protocol design to production-ready applications.
We architect and build custom blockchain infrastructure tailored to your specific business logic and performance requirements. Our full-stack approach delivers a production-ready mainnet in weeks, not months, with 99.9% uptime SLAs and comprehensive security audits.
From a private consortium chain for enterprise data sharing to a high-throughput public L2, we deliver the exact ledger your application needs.
- Core Protocol Design: Custom consensus (
PoA,PoS), tokenomics, and governance models. - Node Infrastructure: Managed validator networks, RPC endpoints, and block explorers.
- Smart Contract Suite: Secure
Solidity/Rustcontracts for assets, governance, and core logic. - Integration Layer: APIs, indexers, and bridges to connect with existing systems and other chains.
Your Questions, Answered
ZK Circuit Security Audit FAQs
Get clear, specific answers about our zero-knowledge circuit auditing process, timeline, and deliverables.
We employ a multi-layered audit methodology combining automated analysis, manual review, and adversarial testing. Our process includes: 1) Formal Verification using tools like Circomspect and custom scripts to check for common vulnerabilities. 2) Manual Code Review by senior cryptographers focusing on soundness, completeness, and circuit-specific logic. 3) Adversarial Testing where we attempt to construct malicious proofs or find inputs that break constraints. This comprehensive approach has secured over $500M+ in TVL across 50+ ZK projects.
ENQUIRY
Get In Touch
today.
Our experts will offer a free quote and a 30min call to discuss your project.
NDA Protected
Confidentiality24h Response
Time to ValueDirectly to Engineering Team
No Sales Fluff10+
Protocols Shipped
$20M+
TVL Overall