We architect and build production-grade blockchain systems from the ground up. Our full-cycle development delivers custom L1/L2 chains, private networks, and protocol upgrades tailored to your specific business logic and regulatory requirements.
LABS
Services
EVM Invoice Smart Contract Development
We build custom, gas-optimized smart contracts for invoice generation, tracking, and payment on Ethereum, Polygon, and other EVM chains. Our upgradable architecture integrates seamlessly with your existing DeFi stack.
Chainscore © 2026
overview
FULL-STACK ENGINEERING
Custom Blockchain Development
End-to-end blockchain solutions built for scale, security, and speed.
- Core Protocol Development: Design and implement consensus mechanisms (
PoS,PoA), tokenomics, and governance models. - Smart Contract Suites: Secure, gas-optimized contracts for
ERC-20,ERC-721,ERC-1155, and custom standards. - Node Infrastructure: Deploy and manage validator nodes, RPC endpoints, and indexers with 99.9% uptime SLAs.
- Integration & APIs: Seamless bridges to existing systems and comprehensive APIs for data and transaction management.
We focus on delivering a fully audited, mainnet-ready product within agreed timelines, not just proof-of-concepts. Our process includes threat modeling, formal verification, and third-party audits by firms like CertiK or Quantstamp.
key-features-cards
ENTERPRISE-GRADE DEVELOPMENT
Core Technical Capabilities
We deliver production-ready EVM invoice contracts that are secure, scalable, and integrate seamlessly into your financial stack.
benefits
TANGIBLE RESULTS
Business Outcomes You Can Measure
Our EVM invoice smart contracts deliver quantifiable improvements to your financial operations, from cost reduction to operational efficiency.
01
Reduced Transaction Costs
Gas-optimized contract logic and batch processing reduce on-chain transaction fees by up to 40% compared to standard implementations.
40%
Avg. Gas Savings
< $0.05
Per Invoice Cost
02
Faster Payment Settlement
Automated, trustless execution eliminates manual reconciliation, settling invoice payments in minutes instead of days.
Minutes
Settlement Time
24/7
Automation
03
Enhanced Security & Compliance
Contracts are built with OpenZeppelin libraries and undergo formal verification, providing a secure, auditable ledger for all transactions.
100%
On-Chain Audit Trail
Formal Verification
Security Standard
04
Streamlined Integration
Modular architecture and comprehensive APIs allow for integration with existing ERP and accounting systems in under 3 weeks.
< 3 weeks
Avg. Integration Time
REST & WebSocket
API Support
05
Improved Cash Flow Visibility
Real-time, immutable tracking of invoice status from issuance to payment provides unparalleled transparency for treasury management.
Real-Time
Status Updates
Immutable
Payment History
06
Scalable Global Operations
Deploy on any EVM chain (Ethereum, Polygon, Arbitrum) to handle multi-currency invoices and cross-border payments without intermediaries.
Multi-Chain
Deployment
0
Intermediary Fees
Choose the Right Level of Support
Phased Development Tiers
Structured packages for EVM invoice smart contract development, from foundational code to fully managed enterprise solutions.
| Feature | Starter | Professional | Enterprise |
|---|---|---|---|
Custom Invoice Smart Contract | |||
ERC-20/ERC-721 Payment Support | |||
Automated Invoice Generation & Escrow | |||
Multi-Chain Deployment (Ethereum, Polygon, Arbitrum) | |||
Formal Security Audit Report | |||
Deployment & Configuration Support | |||
Integration with Existing ERP/CRM | |||
Custom Compliance & KYC Module | |||
24/7 Monitoring & Alerting | |||
Incident Response SLA | N/A | 48h | 4h |
Estimated Timeline | 2-3 weeks | 4-6 weeks | 8-12 weeks |
Starting Price | $8,000 | $25,000 | Custom Quote |
how-we-deliver
PREDICTABLE, SECURE, AND FAST
Our Development & Delivery Process
A transparent, step-by-step methodology designed to deliver production-ready, secure invoice smart contracts on schedule. We focus on clear deliverables and rigorous testing at every stage.
01
Discovery & Specification
We conduct a technical deep-dive to define your exact requirements: token standards (ERC-20, ERC-1155), payment flows, compliance logic, and integration points. You receive a detailed technical specification document for sign-off.
1-3 days
Workshop Duration
100%
Requirements Locked
02
Architecture & Development
Our senior Solidity engineers build your custom contracts using battle-tested patterns (OpenZeppelin), gas optimization techniques, and modular design for future upgrades. Development occurs in a private GitHub repository with daily updates.
Sol 0.8.x+
Solidity Version
OZ Libraries
Security Foundation
03
Security Audit & Testing
Every line of code undergoes rigorous testing: unit/integration tests (Hardhat/Foundry), static analysis (Slither), and manual review by our security team. We provide a comprehensive audit report prior to deployment.
100%
Test Coverage
Zero Critical
Audit Findings
04
Deployment & Verification
We handle the full deployment lifecycle on your chosen EVM network (Ethereum, Polygon, Arbitrum, etc.), including contract verification on Etherscan, initial configuration, and a final security checklist. You receive full ownership and access.
< 1 day
Deployment Time
Multi-chain
Network Support
A Cost-Benefit Analysis for CTOs
Build vs. Buy: Why Custom Development Wins
Comparing the total cost of ownership, risk, and time-to-market for in-house development versus partnering with Chainscore Labs for your EVM invoice smart contract needs.
| Key Factor | Build In-House | Buy: Chainscore |
|---|---|---|
Time to Production | 4-9 months | 4-8 weeks |
Initial Development Cost | $120K - $250K+ | $25K - $75K |
Security Audit & Pen Testing | Adds $15K-$30K & 4-6 weeks | Included & integrated |
Ongoing Maintenance (Annual) | 1-2 FTEs ($150K-$300K) | Optional SLA from $20K/year |
Protocol Upgrades (e.g., EIPs) | Your team's responsibility | Managed service |
Multi-Chain Deployment | Complex, custom per chain | Standard deliverable |
Integration Support | Self-sourced | Dedicated technical lead |
Total Year 1 Cost | $285K - $580K+ | $45K - $95K |
Key Risk | Unaudited code, talent churn, delays | Audited, warrantied, on-time delivery |
EVM Invoice Smart Contract Development
Frequently Asked Questions
Get clear answers on timelines, costs, security, and process for your custom invoice automation solution.
Standard invoice contract deployments take 2-4 weeks from kickoff to mainnet launch, including audit. Pricing is project-based, with typical engagements ranging from $15,000 to $50,000. This covers custom logic, comprehensive testing, a security audit, and deployment to your chosen EVM chain. We provide a fixed-price quote after a technical scoping session.
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