We deliver audit-ready code for ERC-20, ERC-721, and custom protocols, reducing your time-to-market from months to 2-4 weeks. Our development process is built on battle-tested security patterns from OpenZeppelin and rigorous internal reviews.
LABS
Services
Cross-Chain Fiat Gateway Development
We build secure, compliant bridges connecting traditional banking rails to multiple blockchain ecosystems, enabling users to deposit and withdraw fiat currency across different chains from a single interface.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts.
- Custom Logic: DeFi mechanisms, governance systems, and complex multi-signature wallets.
- Gas Optimization: Code designed for up to 40% lower transaction costs.
- Full Lifecycle: From architecture and development to deployment and mainnet launch support.
We don't just write code; we build the foundational trust layer for your application. Every contract includes comprehensive documentation and a security review report.
key-features-cards
ENTERPRISE-GRADE INFRASTRUCTURE
Core Capabilities of Our Gateway Architecture
Our architecture is engineered for reliability and scale, providing the robust foundation your fintech or crypto business needs to process fiat-to-crypto transactions globally.
benefits
TANGIBLE RESULTS
Business Outcomes for Your Platform
Our cross-chain fiat gateway development delivers measurable improvements to your core business metrics, from user acquisition to revenue growth.
01
Expand Your Addressable Market
Onboard users from 150+ countries with local payment rails (SEPA, ACH, PIX, UPI) and 40+ fiat currencies. Eliminate regional barriers to entry.
150+
Countries
40+
Fiat Currencies
02
Reduce User Onboarding Friction
Cut the time-to-first-transaction from days to under 2 minutes with automated KYC/KYB flows and instant settlement to 10+ major blockchains.
< 2 min
First Transaction
10+
Blockchains
03
Increase Transaction Volume & Revenue
Capture more value per user with lower fees and higher limits. Our optimized routing reduces cross-chain swap costs by up to 30% compared to aggregators.
30%
Lower Swap Costs
5-10x
Higher Limits
05
Achieve Operational Reliability
Maintain platform uptime with our 99.9% SLA and multi-provider redundancy for fiat processors and blockchain RPCs. Automated failover ensures zero downtime.
99.9%
Uptime SLA
< 50ms
Failover Time
Structured Roadmap to Production
Phased Development Tiers
A modular approach to building a secure, compliant, and scalable cross-chain fiat gateway. Each tier builds upon the last, designed to align with your funding stage and go-to-market timeline.
| Feature / Deliverable | Launchpad | Growth | Scale |
|---|---|---|---|
Multi-Chain Wallet Integration (EVM) | |||
Stripe & PayPal Fiat On-Ramp | |||
Off-Ramp to Bank (SEPA/SWIFT) | |||
KYC/AML Provider Integration (Sumsub/Onfido) | Basic | Advanced | Custom |
Smart Contract Suite Audit | 1 Protocol | Full Stack | Full Stack + Monitoring |
Gas Optimization & Fee Abstraction | |||
Real-Time Transaction Monitoring Dashboard | |||
Compliance Reporting Dashboard | |||
Dedicated Security & Incident Response | Ad-hoc | SLA: 24h | SLA: 4h |
Infrastructure Uptime SLA | 99.5% | 99.9% | 99.99% |
Estimated Timeline | 6-8 weeks | 10-14 weeks | 16+ weeks |
Starting Investment | $25K - $50K | $75K - $150K | Custom Quote |
how-we-deliver
PROVEN FRAMEWORK
Our Delivery Methodology
Our systematic approach to cross-chain fiat gateway development ensures security, speed, and scalability from concept to launch.
01
Discovery & Architecture
We conduct a technical deep-dive to define your specific fiat on/off-ramp requirements, selecting optimal blockchains (EVM, Solana, Cosmos) and payment rails (Stripe, Plaid, local PSPs).
1-2 weeks
Design Phase
5+
Architecture Reviews
02
Secure Smart Contract Development
We build audited, gas-optimized smart contracts for cross-chain asset bridging and custody using OpenZeppelin libraries and formal verification patterns.
100%
Code Coverage
2+ Audits
Security Standard
03
Payment Gateway Integration
Seamless integration with global payment service providers (PSPs), banking APIs, and compliance tools for KYC/AML, ensuring regulatory readiness.
50+
Supported Countries
< 500ms
Payment Latency
04
Cross-Chain Bridge Implementation
Deployment of secure, non-custodial bridge infrastructure using protocols like Axelar or LayerZero, enabling seamless asset transfers between chains.
10+
Supported Chains
99.9%
Relay Uptime
05
Testing & Security Audit
Comprehensive testing suite including unit, integration, and penetration testing, followed by a formal audit report from a third-party security firm.
0 Critical
Audit Findings
48h
Vulnerability Response
06
Deployment & Monitoring
Production deployment with automated CI/CD pipelines, real-time monitoring dashboards, and 24/7 incident response for your live gateway.
< 4 weeks
Time to Launch
24/7
SRE Support
Cross-Chain Fiat Gateway Development
Frequently Asked Questions
Get clear answers on timelines, costs, and technical details for integrating fiat on-ramps and off-ramps across multiple blockchains.
A production-ready MVP with core on-ramp/off-ramp functionality for 2-3 blockchains typically deploys in 4-6 weeks. Complex enterprise deployments with multiple payment rails, advanced compliance modules, and 5+ chains can take 8-12 weeks. Our agile sprints deliver working integrations every 2 weeks.
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