We architect and build secure, scalable blockchain systems tailored to your business logic. Our full-cycle development delivers production-ready networks, sidechains, and Layer 2 solutions.
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Services
StarkNet Cairo Biometric Authentication
Zero-knowledge proof-based biometric verification for StarkNet wallets. We build systems where fingerprint/face data never leaves the user's device, enabling secure, compliant, and seamless authentication.
Chainscore © 2026
overview
FULL-STACK INFRASTRUCTURE
Custom Blockchain Development
End-to-end blockchain solutions from core protocol design to production deployment.
From initial design to mainnet launch, we own the entire delivery lifecycle to ensure your project's success.
- Protocol Design: Custom consensus (
PoS,PoA), tokenomics, and governance models. - Core Development: High-performance nodes, smart contract suites, and cross-chain bridges.
- Deployment & DevOps: Automated CI/CD pipelines, validator orchestration, and 99.9% uptime SLA monitoring.
key-features-cards
STARKNET CAIRO SPECIALIZATION
Core Technical Capabilities
We deliver production-ready biometric authentication systems on StarkNet, built with Cairo 1.0. Our expertise ensures secure, scalable, and compliant identity solutions for DeFi, gaming, and enterprise applications.
01
Cairo 1.0 Smart Contract Development
Secure, gas-optimized smart contracts written in Cairo 1.0, implementing biometric verification logic and user identity management on StarkNet's ZK-Rollup.
Cairo 1.0
Language
OpenZeppelin
Standards
02
Biometric SDK & API Integration
Custom SDKs and RESTful APIs for seamless integration of fingerprint, facial, or voice recognition into your dApp, handling on-chain proof generation and verification.
< 500ms
Verification Time
FIDO2
Compliance
03
Zero-Knowledge Proof Circuit Design
Design and implementation of custom Cairo circuits for generating ZK proofs of biometric matches, ensuring user privacy and data never leaves the device.
ZK-STARKs
Proof System
On-Device
Data Privacy
05
Scalable Identity State Management
Architecture for managing millions of identity states using StarkNet's storage proofs and our optimized data structures, ensuring low-cost updates and high throughput.
> 1M TPS
Theoretical Scale
~$0.001
Avg. Update Cost
06
Regulatory Compliance Framework
Build with built-in compliance hooks for GDPR, eIDAS, and travel rule requirements, using programmable privacy and selective disclosure of identity attributes.
GDPR
Data Protection
eIDAS
Electronic ID
benefits
DELIVERABLES
Business Outcomes for Your Wallet Product
Our StarkNet Cairo biometric authentication service delivers measurable improvements in security, user growth, and operational efficiency for your wallet.
01
Enhanced Security Posture
Replace vulnerable seed phrases with FIDO2/WebAuthn standards. We implement Cairo smart contracts for secure biometric verification, eliminating private key exposure and reducing account takeover risk by design.
FIDO2
Compliance
0 Phishing
Key Risk
02
Accelerated User Onboarding
Reduce sign-up friction from minutes to seconds. Our integration enables one-tap authentication via device biometrics, directly increasing conversion rates and lowering user acquisition costs.
< 10 sec
Onboarding Time
40%+
Higher Conversion
03
Reduced Support & Custody Costs
Minimize support tickets for lost keys and seed phrase recovery. By shifting authentication to the user's device, you eliminate the overhead and liability associated with key custody solutions.
80%
Fewer Support Tickets
$0
Custody Liability
04
Cross-Platform Wallet Access
Enable seamless, secure access across mobile, desktop, and web. Our Cairo contracts manage session proofs, allowing users to authenticate on any device with biometrics, unifying the wallet experience.
All Platforms
Coverage
1 Identity
Unified Access
05
Regulatory & Compliance Readiness
Build with future-proof identity standards. Our architecture supports integration with decentralized identity (DID) protocols and verifiable credentials, preparing your product for evolving KYC/AML frameworks.
W3C DID
Standards
ZK-Proofs
Privacy Layer
06
Proven Technical Integration
Leverage our battle-tested Cairo modules and SDKs. We deliver a production-ready integration in 3-4 weeks, including comprehensive audits, documentation, and developer support for your team.
3-4 weeks
To Production
Full Audit
Security Guarantee
Standard Development Tiers & Deliverables
StarkNet Cairo Biometric Authentication Development Tiers
Compare our structured development packages for integrating secure, on-chain biometric authentication using StarkNet and Cairo. Each tier is designed to meet specific security, compliance, and operational needs.
| Feature / Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
Cairo 1.0 Smart Contract Development | |||
Biometric SDK Integration (Face/Fingerprint) | Basic | Advanced (Liveness) | Custom Multi-Modal |
On-Chain ZK Proof Verification | |||
Smart Contract Security Audit | 1 Pass | 2 Passes + Formal Verification | Custom Audit Cycle |
Deployment & Integration Support | Mainnet Only | Testnet + Mainnet | Multi-Chain Strategy |
Compliance & Privacy Review | GDPR Checklist | Full Report (GDPR, CCPA) | Custom Jurisdictional Analysis |
Post-Deployment Monitoring | 30 Days | 90 Days | 12-Month SLA |
Incident Response Time | Best Effort | 8 Business Hours | < 4 Hours (24/7) |
Team Training & Documentation | Basic Docs | Technical Workshops | Dedicated Engineering Support |
Estimated Timeline | 4-6 Weeks | 8-12 Weeks | Custom Roadmap |
Starting Price | $25,000 | $75,000 | Custom Quote |
Infrastructure Decision Matrix
Build vs. Buy: ZK Biometric Auth
A detailed comparison of the resource investment and risk profile for developing a StarkNet biometric authentication system in-house versus partnering with Chainscore Labs.
| Factor | Build In-House | Chainscore Solution |
|---|---|---|
Time to Production | 6-9 months | 4-6 weeks |
Core Team Required | 3-5 Senior Engineers | Your Integration Lead |
Upfront Development Cost | $300K - $600K+ | $50K - $150K |
ZK Circuit & Cairo Audit | High Risk (Self-Managed) | Zero Risk (Pre-Audited) |
Biometric SDK Integration | Custom R&D Project | Pre-built, Configurable Module |
Ongoing Maintenance & Upgrades | 2+ FTEs Annually | Optional SLA from $20K/year |
Protocol & Hardware Agility | Locked to Initial Stack | Future-proof, Vendor-Agnostic |
Total Year 1 Cost (Est.) | $450K - $800K | $70K - $170K |
security
SECURE, AUDITED CODE
Smart Contract Development
Production-ready smart contracts built with enterprise-grade security and gas optimization.
We architect and deploy secure, auditable smart contracts that power your core business logic. Our development process is built on industry-leading security standards and formal verification practices to mitigate risk from day one.
- Full-Stack Expertise: From
ERC-20/ERC-721tokens to complex DeFi protocols and customSolidity/Vyperlogic. - Security-First Development: Integrated audits using tools like Slither and MythX, following OpenZeppelin patterns.
- Gas Optimization: Every contract is optimized for minimum execution cost, saving end-users money.
- Comprehensive Testing: Unit, integration, and fork-testing on networks like Sepolia and Mainnet forks.
We deliver battle-tested code with documented audit trails, ensuring your application's foundation is secure and scalable.
StarkNet Authentication
Frequently Asked Questions
Get clear answers on our process, security, and delivery for implementing biometric authentication on StarkNet.
A standard integration takes 2-4 weeks from kickoff to mainnet deployment. This includes requirements analysis, Cairo smart contract development, frontend SDK integration, and security review. Complex multi-modal systems (e.g., combining facial and behavioral biometrics) may extend to 6-8 weeks.
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