We architect and deploy custom smart contracts that form the secure, immutable backbone of your dApp. Our development process is built on audited security patterns and battle-tested standards like ERC-20, ERC-721, and ERC-1155.
LABS
Services
StarkNet Cairo ZK-Rollup Card Solution
We build custom, high-throughput payment card transaction layers using StarkNet's Cairo and ZK-rollup technology. Achieve privacy, scalability, and compliance for your FinTech or Web3 product.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by experts for your Web3 application.
- End-to-End Development: From initial specification and gas optimization to deployment and verification on mainnet.
- Security-First Approach: Code is developed with
OpenZeppelinlibraries and undergoes internal and third-party audits. - Protocol Integration: Seamless integration with DeFi primitives, oracles, and cross-chain messaging layers.
Deliver a fully audited, gas-optimized contract suite in 4-6 weeks, ready for mainnet launch with comprehensive documentation.
key-features-cards
ZK-ROLLUP DEVELOPMENT
Core Technical Capabilities We Deliver
We architect and deploy production-ready StarkNet Cairo applications with enterprise-grade security and performance. Our focus is on delivering tangible infrastructure that scales.
01
Cairo Smart Contract Development
We build and audit high-assurance smart contracts in Cairo 1.0, leveraging StarkNet's native language for optimal ZK-proving efficiency and security. Includes custom logic for DeFi, gaming, and identity protocols.
Cairo 1.0
Language
OpenZeppelin
Standards
02
ZK-Rollup Architecture & Deployment
Full-stack design and deployment of your application-specific rollup (appchain) on StarkNet. We handle sequencer setup, state management, and L1-L2 messaging for a seamless, scalable user experience.
App-Specific
Rollup Type
Full Stack
Ownership
03
Prover Integration & Optimization
Integrate and optimize the STARK prover for your application to minimize proof generation time and transaction costs. We ensure your dApp remains cost-effective at scale.
STARK
Proof System
Gas Cost
Focus
04
Security Audits & Formal Verification
Rigorous security assessment of your Cairo codebase, including manual review, static analysis, and tool-assisted formal verification to eliminate vulnerabilities before mainnet launch.
Multi-Layer
Audit Approach
Pre-Launch
Timing
05
Bridging & Cross-Chain Interoperability
Implement secure, trust-minimized bridges between your StarkNet rollup and Ethereum L1 or other L2s. We design for asset portability and composability across the ecosystem.
Ethereum L1
Primary Bridge
Composability
Goal
06
Performance Monitoring & Analytics
Deploy custom dashboards to monitor rollup health, transaction throughput, proof times, and fee markets. Gain real-time insights into your application's performance and costs.
Real-Time
Monitoring
Cost Analytics
Included
benefits
DELIVERABLES & GUARANTEES
Business Outcomes for Your Product
Our StarkNet Cairo ZK-Rollup solution delivers measurable results, from accelerated time-to-market to enterprise-grade security. Here’s what you can expect.
01
Accelerated Time-to-Market
Go from concept to mainnet in under 6 weeks with our proven development framework and pre-audited Cairo contract templates. We handle the complex ZK-Rollup setup so you can focus on product logic.
< 6 weeks
From spec to mainnet
90%
Faster than in-house build
02
Enterprise-Grade Security
Every Cairo smart contract and ZK-Rollup sequencer we build undergoes rigorous formal verification and third-party audits by firms like Nethermind and Pessimistic. We guarantee code correctness and secure state transitions.
100%
Formal verification coverage
0
Critical vulnerabilities at launch
03
Optimized Transaction Economics
Achieve sub-$0.01 transaction costs with our custom Cairo contract architecture and StarkNet L2 fee optimization. We implement state diffs, storage packing, and batching to maximize user savings.
< $0.01
Avg. transaction cost
95%
Cheaper vs. Ethereum L1
04
High-Throughput Scalability
Deploy a ZK-Rollup capable of processing 4,000+ TPS with sub-second finality. Our infrastructure design ensures your dApp scales seamlessly with user growth without compromising performance.
4,000+
Transactions per second
< 1 sec
Time to finality
05
Seamless Ethereum Interoperability
Build with guaranteed compatibility using our audited bridge contracts and messaging layers (StarkGate). Enable secure, trust-minimized asset transfers between L1 and your custom L2 rollup.
< 30 min
Standard withdrawal time
100%
ERC-20/721 compatibility
06
Dedicated Protocol Expertise
Your project is led by senior Cairo developers with 3+ years of StarkNet experience who have deployed over $500M in on-chain TVE. We provide ongoing support and upgrade paths for your rollup.
3+ years
Avg. team StarkNet experience
$500M+
Collective TVE deployed
StarkNet Cairo ZK-Rollup Card Solution
Phased Development & Delivery Timeline
A structured, milestone-driven delivery model for your StarkNet-based payment card infrastructure, ensuring predictable delivery and clear ROI.
| Phase & Deliverables | Timeline | Key Outcomes | Your Investment |
|---|---|---|---|
Phase 1: Architecture & Smart Contracts | 2-3 weeks | Deployable Cairo contracts for card issuance, top-up, and spending logic. Full technical specification document. | $15K - $25K |
Phase 2: Backend Integration Layer | 3-4 weeks | Production-ready APIs for fiat on/off-ramps, transaction relay, and real-time balance management. | $20K - $35K |
Phase 3: Frontend SDK & User Portal | 2-3 weeks | White-label React SDK for card management and admin dashboard for user oversight and compliance. | $15K - $30K |
Phase 4: Security Audit & Mainnet Deployment | 2 weeks | Comprehensive audit report from a leading firm and deployment to StarkNet mainnet with full documentation. | $10K - $20K |
Phase 5: Ongoing Support & SLA | Ongoing | Guaranteed 99.5% uptime, protocol upgrade support, and dedicated technical account manager. | From $5K/month |
Total Time to Launch (Phases 1-4) | 9-12 weeks | A fully functional, audited StarkNet card solution ready for your first users. | $60K - $110K + ongoing |
how-we-deliver
PREDICTABLE & TRANSPARENT
Our Development Process
A systematic, milestone-driven approach to building your StarkNet Cairo ZK-Rollup solution, ensuring technical excellence, security, and on-time delivery.
01
Architecture & Design
We design a scalable, cost-efficient StarkNet architecture tailored to your use case. This includes defining the L1-L2 bridge model, data availability strategy, and Cairo contract structure.
2-3 days
Initial Design Sprint
100%
Technical Spec Review
02
Cairo Smart Contract Development
Our experts write, test, and optimize your core Cairo 1.0 smart contracts. We implement best practices for ZK-provable logic, gas efficiency, and upgradability patterns.
OpenZeppelin
Security Patterns
100%
Test Coverage
04
Integration & Deployment
We deploy your ZK-Rollup to StarkNet testnet and mainnet, integrating front-end SDKs, indexers, and monitoring dashboards. Includes comprehensive handover documentation.
1-2 weeks
Deployment Window
99.9%
Uptime SLA
StarkNet Card Solution
Frequently Asked Questions
Get clear answers on our process, timeline, and technical approach for building your ZK-Rollup payment solution.
A standard deployment takes 4-6 weeks from kickoff to mainnet launch. This includes 2 weeks for smart contract development and audit, 1 week for frontend integration, and 1-3 weeks for testing and security hardening. Complex features like multi-asset support or advanced compliance modules can extend the timeline, which we scope and agree upon 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