We architect and deploy secure, gas-optimized smart contracts for ERC-20, ERC-721, and custom protocols. Our process includes formal verification and third-party audits from firms like CertiK or Quantstamp to eliminate vulnerabilities before mainnet deployment.
StarkNet/zkSync Invoice Logic Implementation
Custom Smart Contract Development
Enterprise-grade smart contract development with formal verification and comprehensive security audits.
- Full Lifecycle Support: From initial design and
Solidity 0.8+development to deployment, monitoring, and upgrade management. - Proven Security: Built on OpenZeppelin standards with custom security patterns for access control and reentrancy protection.
- Gas Optimization: We reduce transaction costs by 15-40% through efficient code and storage patterns, critical for user adoption.
Deliver production-ready contracts in 2-4 weeks, backed by a 99.9% uptime SLA and post-launch support.
Core Capabilities of Our ZK-Rollup Invoice System
Our implementation delivers a production-ready, secure, and scalable invoice management layer on StarkNet or zkSync, designed to meet the stringent demands of B2B finance.
Zero-Knowledge Proof Generation
Automated generation and verification of ZK proofs for invoice state transitions, ensuring transaction validity and privacy without revealing sensitive commercial data on-chain.
Custom Invoice Logic & Smart Contracts
Tailored Solidity/Cairo smart contracts implementing your specific invoice lifecycle, payment terms, discounting rules, and multi-currency settlement logic.
High-Throughput Batch Processing
Process thousands of invoice updates, payments, and settlements in a single L2 batch, reducing per-transaction costs by 90-99% compared to L1 execution.
Real-Time Data Availability & Finality
Guaranteed data availability on Ethereum L1 with sub-4 hour finality on StarkNet or near-instant finality on zkSync, ensuring audit trails and dispute resolution.
Regulatory-Compliant Audit Trails
Immutable, timestamped records of all invoice actions compliant with financial reporting standards, enabling seamless integration with enterprise ERP systems.
Enterprise API & Web3 Integration
REST/GraphQL APIs for traditional systems paired with Web3 wallet integration (MetaMask, Argent) for a hybrid user experience, accelerating adoption.
Business Outcomes for Your FinTech or Web3 Product
Our StarkNet/zkSync Invoice Logic Implementation is engineered to deliver measurable business results. We focus on technical execution that drives your product's growth, security, and user adoption.
Faster Time-to-Market
Deploy a fully audited, production-ready invoice and payment system on StarkNet or zkSync in under 3 weeks. Our modular, pre-tested components eliminate months of R&D and integration time.
Radically Lower Transaction Costs
Leverage ZK-rollup efficiency to reduce invoice settlement fees by over 90% compared to Ethereum L1. Enable micro-payments and high-frequency billing models previously cost-prohibitive.
Enterprise-Grade Security & Compliance
Receive logic built with formal verification principles and audited against OWASP Top 10 for Web3. Includes built-in compliance hooks for KYC/AML and automated audit trails.
Seamless Fiat & Crypto Integration
Go beyond crypto-native payments. Our implementation includes secure on/off-ramp connectors and multi-currency settlement logic (stablecoins, ETH, ERC-20s) to serve a global customer base.
Automated, Trustless Workflows
Replace manual reconciliation with smart contract automation. Features include automatic late fee application, recurring billing schedules, and instant payment verification—all without intermediaries.
Scalable Infrastructure Foundation
Build on a system designed for volume. Our architecture supports thousands of invoices per second with sub-second finality, ensuring performance scales with your business growth.
Build vs. Buy: ZK-Rollup Invoice Logic
A detailed comparison of the costs, risks, and timelines for developing a custom ZK-Rollup invoice solution in-house versus partnering with Chainscore Labs for a production-ready implementation.
| Factor | Build In-House | Chainscore Implementation |
|---|---|---|
Time to Production | 6-12 months | 4-8 weeks |
Initial Development Cost | $250K - $600K+ | $50K - $150K |
Security & Audit Overhead | High (unaudited, custom risk) | Low (pre-audited patterns, formal verification) |
Core Team Required | 3-5 Senior ZK Engineers | Your Product Team + Our Experts |
ZK-Circuit Expertise | Must hire/build internally | Included (StarkNet Cairo/zkSync Era) |
Ongoing Maintenance | Full internal team burden | Optional SLA with 24/7 monitoring |
Time to First Invoice Settled | 9+ months | < 2 weeks (PoC) |
Compliance & Reporting Features | Custom build from scratch | Pre-built modules (VAT, multi-currency) |
Total Cost of Ownership (Year 1) | $400K - $800K+ | $75K - $200K |
Our Implementation Process: From Audit to Mainnet
We deliver secure, production-ready StarkNet or zkSync invoice logic with a transparent, milestone-driven process that de-risks your deployment and accelerates time-to-market.
1. Architecture & Specification
We conduct a deep-dive workshop to define your invoice logic, payment flows, and integration points. You receive a detailed technical specification and a 2-week implementation roadmap.
2. Smart Contract Development
Our certified Cairo/Solidity developers build your custom invoice logic with gas optimization, upgradability patterns, and comprehensive unit tests for StarkNet or zkSync.
3. Security Audit & Review
Every contract undergoes a rigorous internal audit against the latest vulnerabilities. We provide a formal audit report with findings and remediation before proceeding.
4. Testnet Deployment & Integration
We deploy the audited contracts to StarkNet Goerli or zkSync Sepolia, execute end-to-end integration tests with your front-end, and validate all business logic.
5. Mainnet Deployment & Verification
We manage the secure mainnet deployment on StarkNet or zkSync Era, verify the contract source code on block explorers, and execute final security checks.
6. Monitoring & Support Handoff
We provide 30 days of post-launch monitoring, performance dashboards, and comprehensive documentation to ensure your team can own and scale the system.
Typical 8-12 Week Delivery Timeline
A detailed breakdown of our phased delivery model for custom StarkNet or zkSync invoice logic, ensuring predictable delivery and clear milestones.
| Phase & Deliverables | Week 1-3: Discovery & Design | Week 4-8: Core Development | Week 9-12: Testing & Launch |
|---|---|---|---|
Requirements & Architecture | |||
Smart Contract Specification | |||
Core Invoice Logic (zkVM) | |||
Payment & Dispute Modules | |||
Frontend Integration Kit | |||
Internal Security Audit | |||
Testnet Deployment & QA | |||
Mainnet Launch Support | |||
Documentation & Handoff | |||
Typical Investment | $15K - $25K | $40K - $70K | $20K - $30K |
Frequently Asked Questions
Get clear answers on our implementation process, security, and support for your Layer-2 invoice system.
A complete, production-ready invoice logic implementation typically takes 3-5 weeks. This includes a 1-week discovery and design phase, 2-3 weeks of core development and unit testing, and a final week for integration, security review, and deployment. Complex integrations with existing ERP or accounting systems may extend this by 1-2 weeks.
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Our experts will offer a free quote and a 30min call to discuss your project.