We architect and deploy battle-tested smart contracts that form the immutable foundation of your protocol. Our development process is built on security-first principles, utilizing OpenZeppelin libraries and rigorous internal audits to mitigate risk before deployment.
LABS
Services
StarkNet Cairo ZK Identity Prover
We build custom, privacy-preserving identity verification systems using zero-knowledge proofs written in Cairo for StarkNet. Enable users to prove credential validity (age, jurisdiction, accreditation) without revealing the underlying data, ensuring compliance without compromising privacy.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts to power your decentralized applications.
- Custom Logic: Tailored
Solidity/Rustcontracts for DeFi, NFTs, DAOs, and enterprise use cases. - Full Lifecycle: Development, testing (
Hardhat/Foundry), deployment, and verification on-chain. - Security Standard: Adherence to best practices with formal verification options for critical systems.
We deliver contracts you can deploy with confidence, not anxiety.
Beyond the initial build, we provide comprehensive documentation and developer handoff packages, ensuring your team can maintain and extend the codebase. Our contracts are optimized for gas efficiency and designed with upgradeability patterns where appropriate, protecting your long-term roadmap.
key-features-cards
ENTERPRISE-GRADE
Core Capabilities of Our ZK Identity Prover Service
We deliver production-ready, audited ZK identity infrastructure built on StarkNet Cairo. Our service provides the cryptographic guarantees and developer experience needed to launch compliant, user-centric identity solutions.
02
On-Chain Verification & Integration
Seamless integration of verifier contracts into your StarkNet dApp. We handle the full stack—from proof generation off-chain to gas-optimized verification on L2—reducing your integration time from months to weeks.
< 2 weeks
Integration
Sub-1s
Verification
05
Gas Optimization & Cost Management
Expert optimization of Cairo circuits and verifier contracts to minimize L2 transaction fees. We target sub-dollar verification costs, making your identity system economically viable at scale.
< $0.50
Target Cost
Benchmarked
Performance
06
Developer Tooling & SDK
Production-grade TypeScript/Python SDKs for proof generation and management. Includes comprehensive documentation, example dApps, and dedicated technical support to accelerate your team's development.
TypeScript/Python
SDK
Full Docs
Support
benefits
DELIVERING TANGIBLE ROI
Business Outcomes: Beyond Technical Implementation
Our StarkNet Cairo ZK Identity Prover service is engineered to deliver measurable business impact, accelerating your time-to-market while ensuring enterprise-grade security and compliance.
01
Accelerated Product Launch
Deploy a production-ready, audited ZK identity system in under 4 weeks, bypassing months of in-house R&D and complex Cairo development.
< 4 weeks
Time to Production
0
ZK Expertise Required
02
Enterprise-Grade Security & Audit
Receive a system built with OpenZeppelin Cairo libraries and delivered with a comprehensive audit report, ensuring your identity logic is secure and verifiable from day one.
100%
Code Coverage
Formal Verification
Security Standard
03
Cost-Efficient Scalability
Leverage StarkNet's L2 efficiency. Our prover architecture minimizes on-chain verification costs, enabling high-volume identity checks for fractions of a cent.
< $0.01
Avg. Verification Cost
10k+ TPS
Theoretical Scale
04
Regulatory & Compliance Ready
Implement privacy-preserving KYC/AML flows with selective disclosure. Our provers generate ZK proofs that verify credentials without exposing underlying user data.
GDPR/CCPA
Compliance Built-in
Selective Disclosure
Core Feature
05
Seamless Ecosystem Integration
Get a modular prover system with pre-built adapters for wallets (Argent, Braavos), oracles, and existing identity stacks, reducing integration time by 70%.
70%
Faster Integration
Argent & Braavos
Pre-Built Connectors
06
Ongoing Protocol Upgrades
Future-proof your investment. We manage all Cairo and StarkNet protocol upgrades, ensuring your prover remains performant and compatible without diverting your team.
24/7
Upgrade Monitoring
Zero Downtime
Update Guarantee
Architectural Comparison
ZK Identity Prover vs. Traditional On-Chain KYC
A technical breakdown of privacy-preserving identity verification on StarkNet versus conventional, data-exposing methods.
| Feature | Traditional On-Chain KYC | Chainscore ZK Identity Prover |
|---|---|---|
User Data Privacy | ||
On-Chain Data Footprint | PII stored in plaintext | Zero-knowledge proof only |
Regulatory Compliance | Manual, jurisdiction-specific | Programmable, proof-based |
Gas Cost per Verification | High (storage + logic) | Low (proof verification only) |
Time to Integrate | 3-6 months | 4-8 weeks |
Developer Experience | Complex data handling | Simple API & SDK |
Audit & Security Burden | High (data leak risk) | Low (cryptographic guarantees) |
Cross-Chain Portability | None (data locked) | Yes (proof is chain-agnostic) |
Total Cost of Ownership (Year 1) | $150K-$300K+ | $50K-$120K |
how-we-deliver
TRANSPARENT & PREDICTABLE
Our Development Process: From Specification to Mainnet
We deliver production-ready StarkNet identity provers through a structured, six-phase methodology designed for technical founders and CTOs. This ensures predictable timelines, rigorous security, and seamless integration.
01
Phase 1: Architecture & Specification
We conduct a deep-dive workshop to define your zero-knowledge identity logic, data schemas, and integration points. Deliverables include a technical specification document and a high-level Cairo architecture diagram.
2-3 days
Workshop Duration
100%
Specification Clarity
02
Phase 2: Circuit Design & Cairo Implementation
Our Cairo experts translate your spec into optimized ZK circuits and smart contracts. We focus on gas efficiency and prover performance, using battle-tested patterns for identity verification and privacy.
OpenZeppelin
Security Patterns
Cairo 1.0+
Language Standard
03
Phase 3: Security Audit & Formal Verification
Every line of Cairo undergoes internal review against our security checklist. For critical systems, we facilitate external audits with partners like Nethermind or ABDK to ensure mathematical correctness and resilience.
100%
Code Review
Partner Audits
Available
04
Phase 4: Testnet Deployment & Integration
We deploy the prover and verifier contracts to StarkNet testnet (Goerli). We build and test the full integration flow with your frontend/backend, including wallet connections and proof generation.
StarkNet Goerli
Test Environment
E2E Tests
Full Coverage
05
Phase 5: Performance Optimization & Load Testing
We benchmark proof generation times and gas costs under simulated load. We implement final optimizations to ensure sub-second verification and cost-effective mainnet operation for your users.
< 1 sec
Target Verification
Load Tested
To 10k+ TPS
06
Phase 6: Mainnet Launch & Monitoring
We manage the mainnet deployment and provide 30 days of post-launch monitoring and support. You receive full documentation, integration guides, and access to our performance dashboards.
30 days
Post-Launch Support
Full Docs
Delivered
StarkNet Cairo ZK Identity Prover
Frequently Asked Questions
Get clear answers on our development process, timelines, security, and support for your ZK-based identity solution.
A ZK Identity Prover is a smart contract system that allows users to cryptographically prove a claim about their identity (like age or citizenship) without revealing the underlying data. Our service delivers a complete, production-ready Cairo smart contract suite for StarkNet, including the core prover logic, verifier contracts, user management modules, and a frontend SDK. We handle the entire development lifecycle from architecture to audit-ready code.
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