We architect and deploy the foundational infrastructure your application requires, from custom RPC nodes to indexing services and data pipelines. This ensures 99.9% uptime, sub-second latency, and eliminates reliance on public endpoints that throttle under load.
LABS
Services
ZK Identity Smart Contract Audit & Security
Specialized security audits and formal verification for the smart contracts and zero-knowledge circuits powering your identity system. We focus on credential logic, revocation mechanisms, and proof verification vulnerabilities.
Chainscore © 2026
overview
CORE SERVICES
Blockchain Infrastructure Development
Build secure, scalable blockchain foundations tailored to your protocol's specific needs.
- Node Infrastructure: Dedicated
EVM/Solana/Cosmosnodes with automated failover and monitoring. - Data & Indexing: Real-time blockchain indexing for wallets, NFTs, and DeFi positions using The Graph or custom solutions.
- Developer Tooling: Bespoke APIs, SDKs, and admin panels to accelerate your team's internal development.
We deliver production-ready infrastructure in 2-4 weeks, backed by SLAs and 24/7 support, so your team can focus on product innovation, not system reliability.
key-features-cards
PROVEN PROCESS
Our ZK Identity Audit Methodology
A systematic, multi-layered approach to securing your zero-knowledge identity protocols, from cryptographic primitives to on-chain logic. We deliver actionable reports, not just findings.
01
Architecture & Design Review
We analyze your ZK identity system's architecture for logical flaws, trust assumptions, and integration risks before a single line of code is audited. This prevents costly redesigns later.
40%
Issues Found Early
2-3 days
Initial Review
02
Cryptographic Implementation Audit
Deep-dive review of your ZK circuits (Circom, Halo2, Noir), signature schemes (BLS, ECDSA), and entropy sources. We verify soundness, completeness, and resistance to known cryptographic attacks.
Zero-Knowledge
Expertise
PLONK, Groth16
Protocols Audited
03
Smart Contract Security Analysis
Manual and automated testing of your on-chain verifier contracts, registry logic, and governance mechanisms. We check for reentrancy, access control flaws, and gas optimization.
500+
Checks Executed
Slither, Foundry
Tools Used
04
Integration & Frontend Testing
Security assessment of your SDKs, APIs, and user-facing applications to prevent wallet-draining attacks, signature phishing, and privacy leaks in the identity flow.
E2E Coverage
Testing Scope
OWASP Top 10
Web Standards
05
Formal Verification & Proof Simulation
Where applicable, we employ formal methods and custom test harnesses to mathematically verify critical circuit properties and simulate adversarial proof generation.
Mathematical
Certainty
Custom Harnesses
Deliverable
06
Remediation Support & Final Verification
We don't just report issues. We provide clear remediation guidance, review fixes, and conduct a final verification audit to ensure all vulnerabilities are resolved.
100%
Fix Verification
Priority Support
Included
benefits
EXPERTISE YOU CAN TRUST
Why Choose Our ZK Security Audit
Our specialized audit service delivers more than a checklist. We provide actionable security insights and architectural guidance tailored for the unique complexities of zero-knowledge identity systems.
01
ZK-Specific Vulnerability Detection
We go beyond standard smart contract checks to audit the cryptographic integrity of your ZK circuits, proof generation logic, and on-chain verifier contracts. We identify critical flaws like soundness errors, front-running risks in identity claims, and gas inefficiencies in verification.
150+
ZK-Specific Checks
O(1) Verification
Gas Target
02
Formal Verification for Core Logic
For your most critical identity assertions and state transitions, we employ formal methods to mathematically prove the correctness of your contract logic, eliminating entire classes of runtime bugs and providing the highest level of assurance for user credentials.
100%
Critical Path Coverage
Certora, Halmos
Tools Used
03
Architecture & Best Practices Review
We assess your entire ZK identity stack—from circuit design and trusted setup participation to contract upgradeability and privacy leakage risks. We provide actionable recommendations aligned with industry standards from EIPs and the ZK research community.
EIP-712, 4337
Standards Compliant
Full Stack Audit
Scope
04
Clear, Actionable Reporting
Receive a prioritized report with CVSS-scored vulnerabilities, detailed exploit scenarios, and concrete remediation code snippets. We focus on executable fixes, not just theoretical findings, to get you from audit to secure deployment faster.
< 10 days
Report Delivery
P0-P3
Risk Prioritization
05
Ongoing Security Advisory
Your audit includes post-report consultation to clarify findings and review fixes. For ongoing projects, we offer retainer packages for design reviews of new features and incremental audits, ensuring security evolves with your protocol.
30 days
Included Support
Direct Slack Channel
Communication
06
Proven Track Record
Our team brings direct experience from auditing high-value identity and DeFi protocols securing billions in TVL. We understand the threat models and economic incentives unique to on-chain identity systems.
$5B+
Assets Secured
Zero Critical Post-Launch
Audit Record
Choose Your Security Level
ZK Identity Audit Packages
Compare our structured audit packages for ZK-powered identity protocols, designed to meet the needs of projects from launch to enterprise scale.
| Audit Feature | Starter | Professional | Enterprise |
|---|---|---|---|
Core Smart Contract Audit | |||
ZK Circuit Review (Groth16/Plonk) | |||
Gas Optimization Report | |||
Deployment & Configuration Support | |||
Post-Deployment Monitoring (30 days) | |||
Priority Response Time SLA | 72h | 24h | 4h |
Remediation & Re-Audit Support | 1 round | 2 rounds | Unlimited |
Formal Verification Report | |||
Custom Threat Modeling | |||
Incident Response Retainer | |||
Typical Project Scope | Up to 500 LOC | 500-2000 LOC | 2000+ LOC / Custom |
Starting Price | $8,000 | $25,000 | Custom Quote |
process-walkthrough
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built to your exact specifications.
We architect and deploy custom Solidity/Rust smart contracts that are secure by design. Every contract undergoes a rigorous process:
- Formal Specification: We define logic, state transitions, and security invariants before a single line of code is written.
- Multi-Layer Audits: Code is reviewed by our internal team and verified by top-tier external firms like Trail of Bits or Quantstamp.
- Gas Optimization: We minimize transaction costs, targeting 20-40% gas savings on critical functions.
Deliver a battle-tested, audited contract suite in as little as 3 weeks, from spec to mainnet deployment.
Our contracts integrate seamlessly with your stack using industry standards (ERC-20, ERC-721, ERC-1155) and advanced patterns for upgradability (Transparent Proxy, UUPS) and access control (OpenZeppelin). We provide comprehensive documentation and a verification package for transparency.
Your Questions, Answered
ZK Identity Audit FAQs
Get clarity on our ZK Identity smart contract audit process, timelines, and security guarantees. These are the most common questions we receive from technical founders and CTOs.
We employ a multi-layered methodology tailored for ZK identity systems:
- Architecture Review: We analyze the protocol's threat model, trust assumptions, and cryptographic soundness.
- Circuit Logic Audit: Manual line-by-line review of Circom or Halo2 circuits for logical flaws, under-constraints, and soundness errors.
- Cryptographic Review: Verification of elliptic curve implementations, hash functions, and signature schemes for side-channel resistance and correctness.
- Smart Contract Integration: Security assessment of the Solidity/Vyper contracts that verify proofs and manage identity states, focusing on reentrancy, access control, and proof verification logic.
- Automated Analysis: We use specialized tools like Picus, ECne, and Slither to detect common ZK vulnerabilities and standard smart contract bugs.
Our team has audited over 30 ZK-based systems securing more than $200M in user assets.
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