We architect and deploy custom smart contracts for DeFi, NFTs, DAOs, and enterprise applications. Our development process ensures security-first code and gas-optimized execution from day one.
LABS
Services
EVM-Compatible Debit Card Integration
Integrate physical and virtual debit cards with smart contract wallets. We build the bridge for your users to spend on-chain assets from Ethereum, Polygon, Arbitrum, and other EVM chains with real-world merchants.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built to your exact specifications.
- Full Lifecycle Development: From initial concept and
Solidity/Rust/Vypercoding to deployment and maintenance onEVM,Solana, orCosmoschains. - Security by Default: All contracts undergo rigorous internal audits and are built with
OpenZeppelinstandards and formal verification patterns. - Measurable Outcomes: Achieve >99.9% uptime, 30-50% gas cost reduction, and a production-ready MVP in 2-4 weeks.
key-features-cards
TURNKEY SOLUTIONS
Core Integration Capabilities
We deliver production-ready, secure integrations that connect your Web3 application to physical payment rails. Focus on your core product while we handle the complex financial infrastructure.
benefits
TECHNICAL ADVANTAGES
Why Integrate DeFi Debit Cards with Chainscore
Our infrastructure is engineered for fintechs and Web3 startups that need to launch compliant, scalable, and user-friendly debit card programs without building from scratch.
01
Compliance-First Architecture
Pre-integrated KYC/AML flows and transaction monitoring designed for global card networks. We handle the regulatory complexity so you can launch faster and scale with confidence.
PCI DSS
Compliant
Global
KYC Coverage
02
Multi-Chain Liquidity Engine
Seamlessly convert and settle crypto across EVM chains (Ethereum, Polygon, Arbitrum, Base) to fiat for card spending. Our smart routing minimizes slippage and gas costs.
< 2 sec
Swap Latency
10+
Supported Chains
03
Enterprise-Grade Reliability
Infrastructure built for 24/7 financial operations. Guaranteed uptime with automated failover, real-time fraud detection, and detailed transaction logging.
99.9%
Uptime SLA
< 100ms
API P99
04
Rapid Integration & Launch
Go from contract to live card program in weeks, not quarters. Our modular APIs and comprehensive SDKs plug directly into your existing wallet or dApp interface.
< 4 weeks
To MVP
Full SDK
Included
05
Custom Rewards & Loyalty
Programmable smart contracts for token rewards, cashback in stablecoins, and on-chain loyalty programs that integrate directly with your card spend logic.
ERC-20/721
Reward Standards
Real-time
Points Accrual
06
Dedicated Technical Partnership
You get a dedicated solutions engineer and 24/7 dev support. We become an extension of your team, providing architecture reviews and co-building complex features.
24/7
Dev Support
Direct Slack
Channel Access
Choose the Right Path to Market
Structured Integration Packages
Compare our tiered service packages for integrating EVM-compatible debit card functionality, designed to match your project's scale and security requirements.
| Feature / Capability | Starter | Professional | Enterprise |
|---|---|---|---|
Custom Smart Contract Development | |||
On-Chain KYC/AML Module | Basic | Advanced | Custom |
Multi-Chain Deployment (EVM) | 1 Network | Up to 3 Networks | Unlimited |
Smart Contract Security Audit | 1 Pass | 2 Passes + Fix Review | Continuous |
Gas Optimization & Fee Abstraction | |||
Real-Time Fraud Detection System | |||
Integration Support & Documentation | Priority Slack | Dedicated Engineer | |
SLA for Critical Issue Response | 24h | 4h | 1h |
Uptime & Performance SLA | 99.5% | 99.9% | |
Estimated Time to Launch | 6-8 weeks | 4-6 weeks | Custom |
Starting Project Cost | $25,000 | $75,000 | Custom Quote |
how-we-deliver
PROVEN PROCESS
Our Delivery Methodology
A structured, transparent approach to integrating EVM-compatible debit cards, designed for technical founders to achieve rapid, secure, and scalable market entry.
01
Architecture & Smart Contract Design
We architect and deploy secure, gas-optimized smart contracts for card issuance, transaction routing, and on-chain settlement. Built with Solidity 0.8+ and OpenZeppelin libraries, ensuring a robust foundation for your financial product.
OpenZeppelin
Security Standard
2-3 weeks
Design Phase
02
Payment Processor Integration
Seamless integration with leading payment processors (Visa/Mastercard networks) and card program managers. We handle the complex API orchestration, KYC/AML data flows, and compliance hooks required for real-world spending.
Visa Direct
Network Ready
< 1 sec
Auth Response
03
Wallet & On-Ramp Connectivity
Integration with major self-custody wallets (MetaMask, Rainbow) and fiat on-ramps. We implement secure signature validation and transaction bridging, enabling users to fund cards directly from their Web3 wallets.
ERC-4337
Account Abstraction
Multi-Chain
Support
04
Security Audit & Penetration Testing
Every integration undergoes rigorous security review. Our contracts are audited by third-party firms, and the full stack is tested for financial-grade security vulnerabilities before launch.
Third-Party
Audits
SOC 2
Compliance Framework
05
Staging & Production Deployment
Managed deployment to testnet and mainnet environments with comprehensive monitoring and alerting. We provide 99.9% uptime SLAs for critical services and detailed operational runbooks for your team.
99.9%
Uptime SLA
4-6 weeks
End-to-End
06
Ongoing Support & Scalability
Post-launch support and scaling advisory. We monitor system performance, assist with user load scaling, and provide guidance on adding new features like rewards programs or multi-currency support.
24/7
Monitoring
10k+ TPS
Scalability Target
security-compliance
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts for your token, DeFi, or NFT project.
We architect and deploy custom smart contracts on EVM-compatible chains (Ethereum, Polygon, Arbitrum, Base) and Solana. Our development process is built for security and speed, delivering a minimum viable product (MVP) in 2-4 weeks.
- Token Standards:
ERC-20,ERC-721,ERC-1155,SPLwith custom minting, vesting, and staking logic. - DeFi Protocols: Automated Market Makers (AMMs), liquidity pools, yield aggregators, and lending/borrowing systems.
- Security First: Code follows
OpenZeppelinbest practices and undergoes rigorous internal audits before deployment.
We don't just write code; we deliver battle-tested infrastructure that handles real value. Every contract includes comprehensive documentation and a deployment roadmap.
EVM Debit Card Integration
Frequently Asked Questions
Common questions from CTOs and product leads about integrating blockchain-powered debit cards into their applications.
A standard integration takes 4-8 weeks from kickoff to production. This includes smart contract development, KYC/AML provider integration, card processor API connections, and end-to-end testing. For projects requiring custom reward mechanics or multi-chain support, timelines extend to 10-12 weeks. We provide a detailed week-by-week project plan during the initial scoping call.
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