We architect and deploy custom smart contracts that form the backbone of your dApp. Our development process is built on security-first principles, utilizing battle-tested patterns from OpenZeppelin and rigorous internal audits to mitigate risk before deployment.
LABS
Services
Cross-Chain Invoice Payment Gateway
A developer-first gateway service that abstracts blockchain complexity. Issue invoices on one network and receive settlement in any asset on another, designed for B2B FinTech and Web3 platforms.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
Deliver a secure, auditable, and gas-optimized foundation for your protocol in as little as 2-4 weeks.
- Custom Logic: Build for
DeFi,NFTs,DAOs, or enterprise use cases withSolidity 0.8+orVyper. - Full Lifecycle: From architecture and development to deployment, verification, and ongoing maintenance.
- Security Guarantee: Every contract undergoes multi-stage review and is prepared for third-party audits.
key-features-cards
BUILT FOR ENTERPRISE SCALE
Core Technical Capabilities
Our cross-chain payment gateway is engineered from the ground up for reliability, security, and seamless integration. We deliver the technical foundation so you can focus on your business logic.
01
Multi-Chain Smart Contract Suite
Deploy secure, audited payment settlement contracts across Ethereum, Polygon, Arbitrum, and other EVM chains. Built with Solidity 0.8+ and OpenZeppelin libraries for maximum security and gas efficiency.
5+
Supported Chains
100%
OpenZeppelin
02
Secure Cross-Chain Messaging
Leverage industry-standard bridges (Axelar, LayerZero) and our proprietary validation layer for atomic, trust-minimized settlement. Ensures payment finality and data consistency across networks.
0
Bridge Hacks
< 5 min
Settlement Time
03
Real-Time Payment Orchestration
Automated workflow engine that handles invoice validation, multi-token routing, gas management, and success/failure states. Reduces manual reconciliation by 95%.
95%
Auto-Reconciliation
24/7
Monitoring
04
Enterprise-Grade API & SDK
RESTful APIs and TypeScript/Go SDKs for seamless integration into existing ERP, accounting, and treasury systems. Includes webhook support for real-time payment status.
< 1 day
Integration Time
99.9%
API Uptime SLA
05
Compliance & Audit Trail
Immutable, on-chain record of all transactions paired with off-chain compliance modules for AML/KYC checks. Generates auditable reports for finance teams and regulators.
100%
On-Chain Proof
Auto
Report Generation
06
Gas Optimization & Cost Management
Dynamic fee estimation and multi-chain gas strategies to minimize transaction costs. Bulk processing and scheduled settlements reduce operational expenses by up to 40%.
40%
Cost Reduction
Dynamic
Fee Engine
benefits
DELIVERABLES
Business Outcomes for Your Platform
Our cross-chain invoice payment gateway is engineered to deliver measurable improvements to your treasury operations, customer experience, and market competitiveness.
01
Multi-Currency Settlement
Accept payments in USDC, USDT, DAI, and native tokens across Ethereum, Polygon, and Arbitrum. Consolidate treasury into a single stablecoin balance, eliminating manual bridging and exchange fees.
6+
Supported Chains
12+
Token Standards
02
Automated Reconciliation
Smart contracts automatically match on-chain payments to off-chain invoice IDs. Real-time webhook notifications update your ERP/accounting system, reducing manual entry errors by 99%.
< 2 sec
Payment Verification
99%
Error Reduction
03
Enterprise-Grade Security
Gateway contracts are built with OpenZeppelin libraries and undergo formal verification. Includes multi-sig admin controls, rate limiting, and emergency pause functions for complete operational security.
100%
Audit Coverage
24/7
Monitoring
04
Faster Time-to-Market
Leverage our pre-audited, modular gateway components. From specification to production deployment in under 3 weeks, including custom branding and API integration.
< 3 weeks
Deployment
Pre-Audited
Components
05
Reduced Transaction Costs
Gas-optimized contract architecture and batched settlement operations lower on-chain fees by up to 40% compared to custom-built solutions. Cost predictability for you and your customers.
Up to 40%
Gas Savings
Predictable
Fee Structure
06
Scalable API Infrastructure
RESTful APIs with 99.9% uptime SLA for invoice generation, status checks, and reporting. Built on AWS with auto-scaling to handle enterprise transaction volumes.
99.9%
Uptime SLA
< 100ms
API Latency
Structured Roadmap for Your Gateway
Phased Development & Integration Tiers
A modular approach to building and scaling your cross-chain invoice payment gateway, from MVP to enterprise-grade deployment.
| Feature / Deliverable | Starter (MVP Launch) | Professional (Scalable Core) | Enterprise (Full Suite) |
|---|---|---|---|
Core Smart Contract Suite | |||
Multi-Chain Bridge Integration | 1 Chain (EVM) | 3 Chains (EVM) | 5+ Chains (EVM & Non-EVM) |
Fiat On/Off-Ramp Connectors | Stripe Only | Stripe + 2 Providers | Custom Aggregator API |
Smart Contract Security Audit | Basic Review | Full Audit + Report | Full Audit + Ongoing Monitoring |
Deployment & Infrastructure | Testnet Only | Mainnet on 1 Chain | Multi-Chain Mainnet with Load Balancer |
Technical Support SLA | Email (72h) | Priority Slack (24h) | Dedicated Engineer (4h) |
Uptime & Performance Monitoring | Basic Alerts | Advanced Dashboards & 99.9% SLA | |
Custom Feature Development | Up to 2 Modules | Full Customization | |
Compliance & KYC Integration | Basic SDK | White-Label Solution | |
Estimated Timeline | 4-6 Weeks | 8-12 Weeks | 12+ Weeks |
Starting Price | $25,000 | $75,000 | Custom Quote |
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 on EVM-compatible chains (Ethereum, Polygon, Arbitrum) and Solana. Our development process includes formal verification and third-party audits to ensure security and reliability.
- Token Standards:
ERC-20,ERC-721,ERC-1155, andSPLtoken implementations. - DeFi Protocols: Custom DEXs, lending/borrowing platforms, and yield aggregators.
- Enterprise Logic: Multi-signature wallets, vesting schedules, and governance modules.
- Gas Optimization: Code reviewed for >30% gas reduction on average.
We deliver fully documented, audited contracts with a 2-week MVP turnaround for standard implementations, backed by a 99.9% uptime SLA for deployed systems.
tech-stack
ENTERPRISE-GRADE FOUNDATION
Built on Proven Protocols & Infrastructure
Your cross-chain payment gateway is powered by battle-tested technology, ensuring security, reliability, and seamless interoperability from day one. We handle the complex infrastructure so you can focus on your business.
Cross-Chain Invoice Payments
Frequently Asked Questions
Get clear, technical answers about our development process, security, and support for your payment gateway.
We deliver a production-ready, audited MVP in 4-6 weeks for a standard two-chain (e.g., Ethereum + Polygon) gateway with core features. Complex deployments involving 5+ chains or custom settlement logic typically take 8-12 weeks. This includes design, development, security audits, and deployment.
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