We architect and deploy bespoke blockchain solutions from the ground up. Whether you need a private consortium chain, a high-throughput L2, or a custom EVM-compatible network, we deliver production-ready infrastructure.
LABS
Services
ZK Circuit Security Audit & Formal Verification
Deploy with confidence. Our specialized team audits and formally verifies your ZK circuits and proof systems, identifying cryptographic vulnerabilities, logic bugs, and side-channel risks before mainnet deployment.
Chainscore © 2026
overview
FOUNDATION
Custom Blockchain Development
Build secure, scalable, and purpose-built blockchain networks tailored to your business logic.
From initial design to mainnet launch, we ensure your chain meets exact performance, security, and governance requirements.
- Core Protocol Design: Consensus (
PoA,PoS), tokenomics, and governance models. - Smart Contract Layer: Custom
Solidity/Vypercontracts for core chain logic. - Node Infrastructure: Managed validator sets, RPC endpoints, and block explorers.
- Cross-Chain Bridges: Secure interoperability with Ethereum, Polygon, and other major networks.
key-features-cards
PROVEN PROCESS
Our ZK Security Audit Methodology
Our systematic, multi-layered approach delivers mathematically rigorous security proofs and actionable findings, reducing critical vulnerabilities by 95% in client codebases.
01
Architecture & Specification Review
We begin by analyzing your circuit's high-level design and formal specifications against your intended security properties. This ensures the system is built on a sound foundation before line-by-line review.
100%
Spec Coverage
Phase 1
Audit Stage
02
Automated Formal Verification
We employ industry-leading tools like Circomspect and custom SMT solvers to mathematically prove the absence of entire vulnerability classes, including under-constrained circuits and soundness errors.
Zero False Positives
Guarantee
Phase 2
Audit Stage
03
Manual Cryptography Review
Our cryptographers perform a deep, manual inspection of elliptic curve operations, zero-knowledge primitives, and randomness generation to identify subtle logical flaws automated tools miss.
Expert-Led
Review
Phase 3
Audit Stage
04
Gas & Circuit Optimization
We analyze prover and verifier efficiency, identifying optimization opportunities that can reduce operational costs by up to 40% without compromising security.
Up to 40%
Cost Reduction
Phase 4
Audit Stage
05
Comprehensive Reporting & Remediation
Receive a detailed report with CVSS-scored vulnerabilities, proof-of-concept exploits, and clear remediation guidance. We provide direct support to verify fixes.
CVSS Scored
Findings
Final Phase
Audit Stage
06
Continuous Security Monitoring
Post-audit, we offer monitoring for newly discovered vulnerabilities in dependent libraries and frameworks, ensuring long-term protection for your production system.
Ongoing
Protection
Optional Add-on
Service
benefits
THE CHAINSCORE ADVANTAGE
Why a Specialized ZK Audit is Critical
Zero-Knowledge circuits are not just smart contracts. They are complex cryptographic programs where a single logical flaw can compromise privacy, drain funds, or break the entire system. Our formal verification and manual review process is engineered specifically for this domain.
02
Circuit Logic & Constraint Analysis
Manual line-by-line review of your Circom, Noir, or Halo2 code to identify logic errors, under-constrained signals, and arithmetic overflows that automated tools miss.
03
Trusted Setup Ceremony Review
We audit the integrity of your Powers of Tau ceremony or other trusted setup implementations, a critical and often overlooked attack vector in ZK systems.
04
Gas & Performance Optimization
Identify and remediate circuit inefficiencies that lead to excessive proving times and on-chain verification costs, directly impacting user experience and operational expense.
05
Integration & Adversarial Testing
We test the full integration of your ZK proofs with on-chain verifiers and front-end applications, simulating adversarial conditions to ensure end-to-end system integrity.
06
Formal Verification Reports
Receive a comprehensive, actionable report with CVSS-scored vulnerabilities, proof-of-concept exploits, and prioritized remediation guidance, not just a list of findings.
Choose the right level of assurance for your project
ZK Security Audit Tiers
Our tiered audit packages are designed to provide the precise level of security verification and support your zero-knowledge application requires, from initial launch to enterprise-grade production.
| Audit Feature | Starter | Professional | Enterprise |
|---|---|---|---|
ZK Circuit Formal Verification | |||
Smart Contract & Integration Audit | |||
Comprehensive Threat Modeling | |||
Automated Test Suite Generation | |||
Remediation Support & Re-Audit | |||
Priority Response SLA | 72h | 24h | 4h |
Post-Audit Security Monitoring | |||
Quarterly Security Reviews | |||
Dedicated Security Engineer | |||
Typical Project Scope | Single Circuit | Full Protocol | Multi-Chain System |
Estimated Timeline | 2-3 weeks | 4-6 weeks | 6-8+ weeks |
Starting Price | $15,000 | $50,000 | Custom Quote |
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FULL-STACK INFRASTRUCTURE
Custom Blockchain Development
Build and deploy secure, production-ready blockchain networks tailored to your business logic.
We architect and implement custom blockchain solutions from the ground up, delivering complete control over your data, consensus, and tokenomics. Our full-stack approach ensures seamless integration with your existing systems.
- Layer 1 & 2 Development: Build sovereign chains with
SubstrateorCosmos SDK, or scale withArbitrum/Optimismrollups. - Smart Contract Core: Production-grade
Solidity/Rustcontracts with formal verification and multi-audit security. - Node Infrastructure: Managed validator networks with 99.9% uptime SLAs and real-time monitoring.
- Custom Protocols: Design and implement bespoke DeFi primitives, NFT standards, or enterprise DLT.
Deploy a fully functional testnet in 4-6 weeks, with a clear path to mainnet launch and ongoing protocol governance.
tech-stack
EXPERTISE ACROSS THE ZK STACK
Frameworks & Tools We Audit
Our security team provides formal verification and audit services for the most critical ZK frameworks and toolchains powering modern L2s and privacy applications. We ensure your cryptographic implementations are mathematically sound and production-ready.
Technical & Process Questions
ZK Security Audit FAQs
Get clear answers on our methodology, timeline, and deliverables for ZK circuit audits and formal verification.
Our methodology is a multi-layered approach combining automated tools and manual expertise. We perform static analysis using Circomspect and custom analyzers, dynamic testing with extensive property-based fuzzing, and manual review by cryptographers specializing in zero-knowledge protocols. For formal verification, we use tools like Picus and custom Coq/Lean models to mathematically prove the absence of critical bugs in your circuit logic and constraints.
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