We architect and deploy custom smart contracts on EVM and Solana that are audit-ready. Our development process integrates security from the first line of code, using battle-tested patterns from OpenZeppelin and rigorous internal review.
LABS
Services
StarkNet ZK Identity System Development
We build privacy-preserving, Sybil-resistant identity layers using Cairo and STARK proofs on StarkNet. Verify user uniqueness without revealing underlying personal data, enabling compliant airdrops, governance, and access control.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, audited smart contracts built for production from day one.
- Production-Grade Code: Built with
Solidity 0.8+orRust, featuring gas optimization, upgradeability patterns, and comprehensive unit testing. - Full Audit Support: We prepare contracts for formal audits with detailed documentation and a security-first design, reducing review cycles by up to 40%.
- End-to-End Delivery: From initial spec to mainnet deployment, including verification on
Etherscan/Solscanand integration testing.
key-features-cards
ENTERPRISE-GRADE
Core Capabilities of Our ZK Identity Systems
We deliver production-ready, privacy-first identity solutions for StarkNet, designed to meet the security and compliance needs of financial institutions and high-growth Web3 applications.
benefits
DELIVERABLES & GUARANTEES
Business Outcomes for Your Protocol
We deliver production-ready StarkNet ZK identity systems with measurable impact on your protocol's security, user growth, and compliance posture.
01
Zero-Knowledge Proof Integration
Implement Cairo-based ZK circuits for identity verification, enabling private credential checks on-chain without exposing user data. Reduces verification gas costs by up to 40% compared to naive implementations.
< 40%
Gas Cost Reduction
Cairo 1.0
Standard
02
Custom Identity Schema Design
Design and deploy bespoke identity schemas (SBTs, Verifiable Credentials) tailored to your protocol's KYC, reputation, or access control needs. Built with OpenZeppelin's Cairo contracts for security.
ERC-3525/6551
Standards
2-3 weeks
Avg. Deployment
04
Cross-Chain Identity Portability
Architect identity solutions using StarkNet's L1<>L2 messaging for seamless portability of credentials across Ethereum and StarkNet, future-proofing your user base.
L1<>L2
Messaging
Ethereum
Compatible
05
Security Audit & Formal Verification
Deliver identity contracts audited by third-party firms and verified with formal methods tools specific to Cairo, ensuring mathematical correctness for high-value credentials.
Third-party
Audits
Formal Methods
Verification
Compare Our Service Levels
StarkNet ZK Identity Development Tiers
Select the development package that matches your project's scale, security requirements, and operational needs.
| Feature / Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
ZK Identity Core Smart Contracts | |||
Cairo 1.0 Development & Optimization | |||
Comprehensive Security Audit Report | |||
Deployment to StarkNet Mainnet | |||
Integration with Existing dApp Frontend | Basic | Full | Full + Custom UI |
Performance & Gas Optimization Review | |||
Post-Deployment Support & Maintenance | 30 days | 6 months | 12 months SLA |
SLA for Critical Issue Response | Best Effort | < 24 hours | < 4 hours |
Dedicated Technical Account Manager | |||
Custom ZK Circuit Design (if needed) | |||
Estimated Timeline | 3-4 weeks | 6-8 weeks | 8-12+ weeks |
Starting Price | $25,000 | $75,000 | Custom Quote |
how-we-deliver
PROVEN METHODOLOGY
Our Development & Delivery Process
A structured, security-first approach to deliver production-ready ZK identity systems on StarkNet, from concept to mainnet deployment.
01
Architecture & Design Sprint
We define your identity model, data schemas, and privacy requirements in a collaborative 1-week sprint. Deliverables include a technical specification and a high-level architecture diagram for your ZK circuits and smart contracts.
1 week
Initial Design
100%
Spec Coverage
02
ZK Circuit & Smart Contract Development
Our Cairo experts build the core logic: custom ZK circuits for identity proofs and StarkNet smart contracts for state management. We implement using OpenZeppelin's Cairo libraries and follow established security patterns.
Cairo 1.0+
Language
OpenZeppelin
Standards
03
Security Audit & Formal Verification
Every line of Cairo code undergoes rigorous internal review. We prepare for and facilitate external audits with leading security firms, providing a formal verification report for your ZK circuits to ensure mathematical correctness.
2+ Audits
External Review
Formal Proofs
Circuit Security
04
Testnet Deployment & Integration
We deploy the full system to StarkNet testnet (Goerli/Sepolia) and build a comprehensive test suite. We integrate with your frontend/backend, providing SDKs and documentation for a seamless developer experience.
> 95%
Test Coverage
Full SDK
Client Support
05
Mainnet Launch & Monitoring
We manage the secure mainnet deployment process and establish real-time monitoring for system health, proof generation latency, and contract activity. We provide a 30-day post-launch support window.
24/7
Launch Support
30 days
Post-Launch Care
06
Documentation & Knowledge Transfer
We deliver complete technical documentation, admin guides, and conduct training sessions for your engineering team, ensuring full ownership and the ability to extend the system independently.
Full Docs
Delivered
Hands-on
Training
tech-stack
FOUNDATION FOR PRODUCTION
Technology & Protocol Expertise
Our deep protocol knowledge and battle-tested development frameworks ensure your ZK Identity System is built on a secure, scalable, and future-proof foundation.
01
StarkNet Core & Cairo Mastery
Development in Cairo 1.0+ with advanced ZK-proof integration. We architect for StarkNet's L2 scaling, ensuring low-cost, high-throughput identity operations.
Cairo 1.0+
Language
StarkNet OS
Protocol
02
Zero-Knowledge Proof Integration
Design and implement custom ZK circuits for identity attestations. Enable selective disclosure and privacy-preserving verification without exposing underlying data.
ZK-SNARKs/STARKs
Proof Systems
Custom Circuits
Implementation
03
Smart Contract Security & Audits
From development to deployment, we enforce rigorous security. Contracts are built with OpenZeppelin patterns and undergo internal/external audits before mainnet.
OpenZeppelin
Standards
Multi-stage
Audit Process
05
Cross-Chain & Multi-Layer Architecture
Design identity systems that operate across L1 (Ethereum) and L2s (StarkNet, others). Ensure portability and composability within the broader Web3 ecosystem.
L1 <> L2
Bridging
Composable
Design
06
Gas Optimization & Cost Engineering
Every contract and proof is optimized for minimal gas consumption and computational cost, reducing end-user fees and ensuring system sustainability.
Gas-Optimized
Contracts
Cost-Efficient
Proofs
StarkNet Identity Solutions
Frequently Asked Questions
Get clear answers on our development process, security standards, and delivery for your ZK-powered identity system.
From initial architecture to mainnet deployment, a standard ZK identity system takes 4-8 weeks. This includes a 1-week discovery phase, 2-4 weeks for core smart contract development and Cairo integration, 1 week for comprehensive testing, and 1-2 weeks for audit preparation and deployment. Complex integrations (e.g., cross-chain verification, custom privacy circuits) can extend the timeline, which we scope and commit to upfront.
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