We architect and deploy custom smart contracts for DeFi, NFTs, and enterprise applications. Our development process ensures security-first design, gas optimization, and full audit readiness.
LABS
Services
Cairo StarkNet ZK-Proof Identity Services
We build verifiable, privacy-preserving identity and attestation systems for IoT devices and DePIN networks using Cairo smart contracts and zero-knowledge proofs on StarkNet.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built to your exact specifications.
- Custom Logic: Build on
ERC-20,ERC-721,ERC-1155or bespoke standards. - Security Focus: Adhere to OpenZeppelin patterns and undergo multi-stage review.
- Deployment & Verification: Full support for mainnet and testnet deployment with source code verification.
Reduce your time-to-market with battle-tested contracts. We deliver production code in 2-4 weeks for an MVP, backed by comprehensive documentation.
key-features-cards
ZK-PROOF IDENTITY INFRASTRUCTURE
Core Technical Capabilities We Deliver
We build secure, scalable, and compliant identity solutions on StarkNet, enabling your FinTech or Web3 application to verify users without compromising privacy or performance.
benefits
DELIVERABLES
Business Outcomes for Your DePIN or IoT Project
Our Cairo StarkNet ZK-Proof Identity Services translate cryptographic innovation into tangible business advantages. We deliver production-ready systems that solve real-world problems for device networks.
01
Zero-Knowledge Device Identity
Implement private, on-chain identity verification for millions of IoT/DePIN devices using Cairo ZK-proofs. Devices prove their legitimacy and state without exposing sensitive operational data, enabling trustless machine-to-machine economies.
> 10k TPS
Identity Proofs
< 0.01¢
Cost per Proof
02
Scalable Sybil-Resistant Networks
Deploy anti-Sybil mechanisms that scale to global device fleets. Our StarkNet-based identity layer prevents duplicate or fake device registrations, ensuring network integrity and fair reward distribution for physical infrastructure.
99.9%
Attack Resistance
Unlimited
Device Scale
03
Regulatory-Compliant Data Provenance
Generate immutable, auditable trails for sensor data and device actions using ZK-proofs. Prove data origin and processing history to regulators or partners without revealing the underlying information, simplifying compliance for critical infrastructure.
GDPR/CCPA
Compliance Ready
Full Audit
Trail Integrity
04
Automated Micropayment & Rewards
Enable seamless, trustless value transfer between devices and users. Our identity service acts as the foundation for automated staking, usage-based billing, and incentive distribution directly on StarkNet, eliminating intermediary fees.
< 1 sec
Settlement Time
~90%
Fee Reduction
05
Interoperable Cross-Chain Identity
Bridge device identities and reputations across Ethereum L1, L2s, and other ecosystems. A device verified on your DePIN can port its credential history to partner networks, unlocking composability and new revenue streams.
5+ Chains
Native Support
< 5 min
Bridge Time
06
Reduced Time-to-Market & Cost
Leverage our battle-tested Cairo identity templates and StarkNet infrastructure expertise. We deliver a production-ready identity layer in weeks, not months, with predictable pricing and no hidden infrastructure management costs.
< 4 weeks
To Production
Fixed Cost
Deployment Model
ZK-Proof Identity Services
Standard Development Tiers & Deliverables
Compare our structured service packages for building secure, scalable identity solutions on StarkNet with Cairo. Each tier includes a full audit and is designed for different stages of project maturity.
| Feature / Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
Cairo Smart Contract Development | |||
Comprehensive Security Audit Report | |||
ZK-Circuit Design & Implementation | Basic (Soulbound) | Advanced (Selective Disclosure) | Custom (Multi-Asset) |
On-Chain Deployment & Verification | Testnet Only | Mainnet + Testnet | Multi-Chain Deployment |
Integration Support (SDK/API) | Documentation | Basic SDK | Custom SDK & Dedicated Engineer |
Post-Deployment Monitoring | 30 days | 90 days | 1 year with SLA |
Incident Response Time | Next Business Day | < 4 hours (24/7) | |
Scalability Consultation | |||
Custom Feature Development | Up to 2 features | Roadmap Alignment | |
Typical Project Timeline | 4-6 weeks | 8-12 weeks | 12+ weeks |
Starting Price | $25,000 | $75,000 | Custom Quote |
use-cases
PROVEN USE CASES
Applications Across DePIN and IoT Verticals
Our Cairo-based ZK-proof identity infrastructure is engineered for the unique demands of physical infrastructure networks. We deliver verifiable, privacy-preserving identity layers that unlock new business models and operational efficiencies.
01
Device Identity & Provenance
Immutable, on-chain identity for IoT sensors and DePIN hardware using ZK proofs. Enables secure device onboarding, lifetime provenance tracking, and fraud prevention for supply chains and asset management.
< 0.01 ETH
Avg. Onboarding Cost
Immutable
Provenance Record
02
Privacy-First Data Attestation
Generate verifiable claims about sensor data (location, temperature, usage) without exposing raw information. Essential for compliance-sensitive verticals like healthcare, energy, and logistics.
ZK-SNARKs
Proof System
Gasless
For End-Users
03
Automated Reward Distribution
Programmable, verifiable reward engines for DePIN networks. Use ZK proofs to validate contributions (bandwidth, storage, compute) and distribute tokens automatically, eliminating manual audits.
Sub-second
Proof Generation
> 99%
Automation Rate
04
Cross-Chain Credential Portability
Sovereign identity credentials that work across Ethereum, StarkNet, and other L2s. Users and devices maintain a single, portable identity, reducing fragmentation and improving UX.
Multi-Chain
Compatibility
Non-Custodial
Key Management
05
Regulatory Compliance Layer
Build KYC/KYB and regulatory compliance directly into your DePIN with selective disclosure. Prove eligibility or jurisdiction without exposing personal data, using audited Cairo circuits.
GDPR Compatible
Design
Audited
Circuits
06
Sybil-Resistant Access Control
ZK-based proof-of-uniqueness and proof-of-personhood to prevent bot farms and Sybil attacks. Secure gated access to physical infrastructure and community-governed resources.
Near-Zero Cost
Per Verification
On-Chain
Revocation
how-we-deliver
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
We architect and deploy custom smart contracts that form the backbone of your Web3 application. Our development process is built on security-first principles and delivers contracts that are audit-ready from day one.
We deliver battle-tested code that executes exactly as intended, protecting your users and your business logic.
- Full-Stack Expertise:
Solidity/Rust/Vyperdevelopment for EVM, Solana, and other L1/L2 networks. - Security by Design: Implementation of OpenZeppelin standards, formal verification, and comprehensive unit/integration testing.
- Gas Optimization: We write efficient code to minimize transaction costs for your end-users.
- End-to-End Delivery: From technical specification and development to deployment, verification, and post-launch support.
ZK-Proof Identity Services
Frequently Asked Questions
Get clear answers on our Cairo StarkNet identity development process, security, and support.
We deliver production-ready ZK-proof identity systems in 4-8 weeks, from initial design to mainnet deployment. The timeline depends on complexity: a basic proof-of-personhood protocol takes ~4 weeks, while a full KYC/AML-compliant identity layer with multi-chain verification can take 6-8 weeks. We provide a detailed project plan within the first week of engagement.
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