We architect and deploy custom smart contracts for DeFi, NFTs, DAOs, and enterprise applications. Our code is built on Solidity 0.8+ with OpenZeppelin security patterns and undergoes rigorous internal audits before delivery.
EVM Cross-Border KYC Gateway Development
Smart Contract Development
Secure, production-ready smart contracts built to your exact specifications.
- From Concept to Mainnet: Full lifecycle support from design and development to deployment and verification.
- Security-First: Every contract includes gas optimization, comprehensive unit tests, and a formal audit report.
- Protocol Integration: Seamless compatibility with
ERC-20,ERC-721,ERC-1155, and major DeFi primitives.
Deploy a battle-tested, audited smart contract suite in as little as 2-4 weeks, with a 99.9% uptime SLA for critical functions.
Core Components of Our EVM KYC Gateway
Our modular gateway system is built for compliance, scalability, and seamless integration. Each component is designed to meet the stringent demands of cross-border finance while maintaining developer velocity.
On-Chain Identity Registry
A decentralized, non-custodial registry for storing verified identity attestations. Uses ERC-725/ERC-735 standards for composability, enabling reusable KYC across dApps without re-verification.
Compliance Rule Engine
A real-time engine that evaluates transactions against jurisdictional AML/CFT rules (FATF Travel Rule, MiCA). Supports dynamic policy updates without requiring smart contract redeploys.
Cross-Chain Verification Layer
Enables KYC status portability across EVM chains (Ethereum, Polygon, Arbitrum, Base). Uses our lightweight merkle-proof relay to sync verification states, eliminating siloed compliance.
Automated Audit Trail
Immutable, tamper-proof logging of all verification events and compliance decisions. Generates regulator-ready reports in real-time, simplifying annual audits and regulatory examinations.
Custodian & Exchange Integration
Pre-configured connectors for major custodians (Fireblocks, Copper) and exchanges. Handles secure data exchange formats (IVMS 101) for the Travel Rule, reducing operational overhead.
Business Outcomes for Your Remittance Platform
Our EVM Cross-Border KYC Gateway delivers more than just compliance. We build the infrastructure that directly drives your platform's growth, security, and market leadership.
Accelerated Market Entry
Deploy a production-ready, compliant gateway in weeks, not months. Our modular architecture and pre-audited smart contracts eliminate the 6-12 month development cycle typical for in-house builds.
Dramatic Cost Reduction
Replace expensive, manual KYC processes and third-party API fees with a self-sovereign, on-chain solution. Slash per-user verification costs and eliminate recurring vendor lock-in.
Unbreakable Compliance & Audit Trail
Every user verification, transaction, and data point is immutably recorded on-chain. Pass regulatory scrutiny with a transparent, tamper-proof audit trail built directly into your settlement layer.
Global Liquidity Access
Unlock cross-chain and cross-border remittance corridors by integrating with our pre-verified network of compliant wallets and institutions. Connect to DeFi pools and traditional rails seamlessly.
Enhanced User Trust & Conversion
Offer a seamless, one-time KYC flow that works across all your supported chains and services. Reduce user drop-off with a familiar, secure onboarding experience that builds immediate trust.
Future-Proof Architecture
Built on upgradable smart contract standards (ERC-725/735) and modular design patterns. Easily adapt to new regulations, jurisdictions, and asset types without platform rewrites.
Structured Development Packages
Compare our standardized packages for building a secure, compliant EVM-based cross-border KYC gateway. Each tier includes core smart contract development, with escalating levels of support, customization, and operational oversight.
| Core Components | Starter | Professional | Enterprise |
|---|---|---|---|
Custom KYC Smart Contract Suite | |||
On-Chain Identity Registry Module | |||
Multi-Chain Deployment (EVM) | 1 Network | Up to 3 Networks | Unlimited |
Integration with Off-Chain Verifiers | Basic (1 Provider) | Advanced (Up to 3) | Custom Orchestration |
Compliance Rule Engine & Logic | Standard Templates | Customizable Rules | Fully Bespoke |
Smart Contract Security Audit | Basic Review | Full Audit + Report | Full Audit + Formal Verification |
Deployment & Configuration Support | Documentation Only | Hands-On Assistance | Managed Deployment |
Post-Launch Monitoring & Alerting | Self-Service Dashboard | 12/5 Alerting | 24/7 SOC2-Aligned Monitoring |
Incident Response SLA | Next Business Day | < 4 Hours | |
Ongoing Compliance Updates | Manual Updates | Scheduled Updates | Automated Patch Management |
Estimated Timeline | 4-6 Weeks | 8-12 Weeks | 12+ Weeks |
Starting Investment | $50,000 | $150,000 | Custom Quote |
Our Development & Integration Process
A structured, security-first approach to building and deploying your compliant cross-border KYC gateway. We deliver production-ready infrastructure with clear milestones and guaranteed outcomes.
Discovery & Architecture Design
We analyze your target jurisdictions and user flows to architect a modular KYC gateway. Deliverables include a technical spec, compliance matrix, and a detailed integration roadmap.
Smart Contract & Protocol Development
Development of auditable, gas-optimized smart contracts for identity attestation and credential management using standards like ERC-725/735 and Soulbound Tokens (SBTs).
Compliance Engine Integration
Secure integration with leading KYC/AML providers (e.g., Sumsub, Onfido) and sanction screening APIs. We build the logic layer for rule-based verification and risk scoring.
Security Audit & Penetration Testing
Comprehensive smart contract audit by our internal security team, followed by optional third-party review. Includes infrastructure penetration testing for the gateway API.
Staging Deployment & Client Testing
Deployment to a dedicated staging environment on your chosen testnet (Sepolia, Mumbai). We provide full documentation and support your integration and UAT testing.
Production Launch & Monitoring
Managed go-live on mainnet (Ethereum, Polygon, etc.) with 24/7 monitoring, alerting, and performance dashboards. We provide ongoing support and compliance updates.
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
We architect and deploy custom smart contracts that power your core business logic. Our development process ensures security-first design, gas optimization, and regulatory compliance for tokens, DeFi protocols, and NFT ecosystems.
From initial audit to mainnet deployment, we manage the full lifecycle, delivering battle-tested code that protects your assets and your users.
- Token Standards: Custom
ERC-20,ERC-721,ERC-1155, andERC-4626vaults with advanced features like vesting and governance. - DeFi & DAOs: Automated market makers (AMMs), lending pools, staking contracts, and multi-sig governance modules.
- Security Guarantee: All contracts undergo rigorous audits using static analysis, formal verification, and manual review before deployment.
- Delivery: Receive a complete audit report, deployment scripts, and documentation in under 4 weeks for standard projects.
Frequently Asked Questions
Get clear answers on our development process, security, and support for your cross-border compliance solution.
A production-ready EVM KYC Gateway typically deploys in 4-6 weeks. This includes smart contract development, integration with your chosen identity providers (e.g., Synaps, Fractal), and on-chain verification logic. Complex multi-jurisdictional requirements or custom compliance rule engines can extend this to 8-10 weeks. We provide a detailed project plan within the first week of engagement.
Get In Touch
today.
Our experts will offer a free quote and a 30min call to discuss your project.