We architect and deploy custom smart contracts for DeFi, NFTs, and enterprise applications. Our team specializes in Solidity and Rust, delivering audit-ready code with comprehensive testing suites.
LABS
Services
Non-Custodial Virtual Card SDK
A developer-first SDK to embed secure, on-demand virtual card issuance and management directly into your dApp or wallet. Enable real-world spending of crypto assets without custody risk.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
Reduce your time-to-market with battle-tested development patterns and a focus on security from day one.
- Security-First Development: Adherence to
OpenZeppelinstandards, formal verification, and internal audits before deployment. - Protocol Integration: Native support for
ERC-20,ERC-721,ERC-1155, and custom tokenomics. - Gas Optimization: Code designed for minimum transaction costs and maximum user efficiency.
- Full Lifecycle Support: From initial spec and
Hardhat/Foundrysetup to mainnet deployment and upgrade management.
key-features-cards
BUILT FOR SCALE
Core SDK Capabilities
Our Non-Custodial Virtual Card SDK provides the foundational building blocks to launch secure, compliant, and user-friendly card programs. We handle the complex infrastructure so you can focus on your product.
benefits
TECHNICAL ADVANTAGES
Why Integrate Our Virtual Card SDK
Our Non-Custodial Virtual Card SDK delivers enterprise-grade infrastructure for Web3 payments, enabling your users to spend crypto globally without sacrificing security or control.
01
Non-Custodial Security
Users retain full control of their funds. Cards are linked to smart contract wallets with MPC technology, eliminating single points of failure and custodial risk.
SOC 2 Type II
Certified
MPC-Based
Key Management
02
Rapid Integration
Go live in weeks, not months. Our modular SDK and comprehensive APIs handle card issuance, KYC, compliance, and settlement, so you can focus on your core product.
< 3 weeks
Integration Time
REST & Web3
API Support
03
Global Compliance & KYC
Built-in, programmable compliance flows for 150+ countries. Our system handles identity verification, transaction monitoring, and sanctions screening automatically.
150+
Countries
PCI DSS
Compliant
04
Multi-Chain & Multi-Asset
Support for Ethereum, Polygon, Solana, and other major L2s. Users can fund cards with USDC, USDT, ETH, and native tokens, with real-time on-chain settlement.
10+
Chains
Sub-Second
Settlement
05
Enterprise-Grade Reliability
Infrastructure designed for fintech scale, with 99.9% uptime SLAs, automatic failover, and 24/7 monitoring to ensure your payment rails are always operational.
99.9%
Uptime SLA
< 50ms
P95 Latency
06
Custom Branding & UX
Fully white-labeled solution. Customize the card issuance flow, UI components, and user experience to match your brand identity seamlessly.
100%
White-Label
Figma Kit
Included
Choose the right plan for your launch
Implementation Tiers & Deliverables
Compare feature sets, support levels, and pricing for our Non-Custodial Virtual Card SDK integration packages.
| Feature / Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
Core SDK Integration | |||
Smart Contract Audit Report | |||
Multi-Chain Deployment (EVM) | 1 Network | Up to 3 Networks | Unlimited |
Custom UI/UX Components | Basic | White-labeled | Fully Custom |
On-chain Compliance Module | |||
Gas Optimization & Fee Abstraction | |||
Technical Deployment Support | Documentation | 2 Weeks | 4 Weeks |
Production Monitoring & Alerts | 7-day trial | 6 Months | 12 Months |
Incident Response SLA | Best Effort | < 24 Hours | < 4 Hours |
Dedicated Technical Account Manager | |||
Estimated Implementation Timeline | 2-3 Weeks | 4-6 Weeks | 8+ Weeks |
Starting Price | $25,000 | $75,000 | Custom Quote |
how-we-deliver
PREDICTABLE, SECURE, AND FAST
Our Development & Integration Process
A streamlined, four-phase methodology designed to deliver a production-ready Non-Custodial Virtual Card SDK in weeks, not months. We focus on security, compliance, and seamless integration from day one.
01
Architecture & Design Sprint
We conduct a 1-week collaborative sprint to define your card program's on-chain logic, compliance rules, and user flow. Deliverables include a technical specification and integration roadmap.
1 week
Duration
100%
Specification Complete
02
Core SDK & Smart Contract Development
Our team builds the secure, gas-optimized smart contracts for card issuance, spending rules, and settlement, paired with a robust TypeScript/React SDK for your frontend.
2-3 weeks
Build Time
OpenZeppelin
Security Base
03
Security Audit & Penetration Testing
Every contract and SDK module undergoes rigorous internal review followed by a formal audit from a leading third-party firm before deployment to mainnet.
100%
Audited Code
CertiK
Audit Partner
04
Deployment & Integration Support
We handle the mainnet deployment, provide comprehensive documentation, and offer dedicated engineering support for your team during the go-live phase.
< 1 week
Integration
24/7
Launch Support
security-compliance
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
We architect and deploy custom smart contracts on EVM and Solana that power your core business logic. Our development process ensures security-first code with formal verification and comprehensive unit testing.
- Token Systems:
ERC-20,ERC-721,ERC-1155, and SPL tokens with custom minting, vesting, and governance. - DeFi Protocols: Automated Market Makers (AMMs), lending/borrowing pools, staking mechanisms, and yield aggregators.
- Enterprise Logic: Multi-signature wallets, supply chain tracking, and automated escrow for real-world asset (RWA) tokenization.
We deliver audit-ready code in 2-4 weeks, backed by a 99.9% uptime SLA for deployed contracts. Our engineers use
OpenZeppelinlibraries andFoundry/Hardhatframeworks as standard practice.
Non-Custodial Virtual Card SDK
Frequently Asked Questions
Get clear answers on integration, security, and support for our enterprise-grade SDK.
A standard integration takes 2-3 weeks from kickoff to production-ready deployment. This includes SDK setup, wallet connection, card issuance logic, and a full security review. Complex customizations (e.g., multi-chain support, custom reward programs) may extend this timeline, which we scope and quote for 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