Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
LABS
Services

EVM Merchant Gateway Integration

End-to-end integration of a secure, high-throughput payment gateway for merchants on Ethereum and EVM-compatible chains. We handle transaction routing, gas optimization, and smart contract-based settlement.
Chainscore © 2026
overview
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built by Web3-native engineers.

We architect and deploy custom smart contracts that form the secure backbone of your application. Our development process is built on audited code patterns and battle-tested standards like ERC-20, ERC-721, and ERC-1155.

  • Security-First Development: Every line is written with OpenZeppelin libraries and undergoes internal review before formal audit.
  • Gas Optimization: We minimize on-chain execution costs, targeting up to 40% gas reduction versus unoptimized contracts.
  • Full Lifecycle Support: From initial spec and Hardhat/Foundry testing to mainnet deployment and upgrade management via transparent proxies.

Our contracts are engineered for the long term, ensuring your protocol's logic is both immutable where it needs to be and upgradeable where flexibility is required.

We deliver production-ready Solidity/Vyper code within 2-4 weeks for an MVP, complete with comprehensive documentation and a test suite achieving >95% coverage. Partner with us to build with confidence on Ethereum, Polygon, Arbitrum, or other EVM-compatible chains.

key-features-cards
ENTERPRISE-GRADE INFRASTRUCTURE

Core Gateway Capabilities We Deliver

Our EVM Merchant Gateway provides the foundational infrastructure to accept, process, and settle crypto payments at scale. We handle the complex blockchain layer so you can focus on your core product.

01

Multi-Chain Payment Processing

Accept payments across 15+ EVM chains (Ethereum, Polygon, Arbitrum, Base) from a single API integration. We manage chain-specific RPC nodes, gas estimation, and transaction routing for optimal speed and cost.

15+
Supported Chains
< 2 sec
Tx Routing
02

Real-Time Fiat Settlement

Convert crypto payments to stablecoins (USDC, USDT) or fiat (USD, EUR) in real-time via integrated on/off-ramps. Eliminate volatility risk and settle directly to your treasury wallet or bank account.

Real-time
Conversion
0.5%
Avg. Fee
03

Enterprise Security & Compliance

SOC 2 Type II compliant infrastructure with MPC wallet custody, transaction monitoring, and automated AML/KYC checks. All smart contracts are audited by Halborn and undergo formal verification.

SOC 2
Compliance
MPC
Wallet Security
EXPLORE
04

Developer-First API & SDKs

RESTful API with comprehensive documentation, webhook support, and client SDKs for React, Node.js, and Python. Includes a merchant dashboard for analytics, refunds, and payout management.

< 1 day
Integration Time
5+
SDK Languages
EXPLORE
05

Gas Optimization & Cost Management

Dynamic gas fee estimation and sponsorship models. We implement EIP-1559 optimization and batch transactions to reduce your payment processing costs by up to 40% compared to public RPCs.

40%
Cost Reduction
EIP-1559
Optimization
06

99.9% Uptime SLA & 24/7 Support

Guanteed service availability with multi-region failover, automated health checks, and dedicated technical support. We provide real-time status pages and incident response for enterprise clients.

99.9%
Uptime SLA
24/7
Support
benefits
TANGIBLE RESULTS

Business Outcomes for Your Platform

Our EVM merchant gateway integration delivers measurable improvements in revenue, security, and operational efficiency. Here’s what you can expect.

01

Expand Revenue Streams

Accept stablecoins and native tokens from a global customer base, unlocking new markets and reducing payment friction. Our integration supports multi-chain payments (Ethereum, Polygon, Arbitrum) to capture more transactions.

24/7
Payment Uptime
Global
Market Access
02

Reduce Settlement Time & Cost

Move from days to minutes. Our gateway settles payments on-chain in under 5 minutes, eliminating traditional banking delays and reducing intermediary fees by up to 80% compared to legacy processors.

< 5 min
Settlement Time
80%
Lower Fees
03

Enterprise-Grade Security & Compliance

Deploy with confidence. Our smart contracts are built with OpenZeppelin libraries, undergo third-party audits, and include automated fraud detection to protect your platform and users.

Audited
Smart Contracts
Real-time
Fraud Detection
04

Seamless Developer Experience

Integrate in weeks, not months. We provide comprehensive API documentation, SDKs for popular frameworks, and dedicated technical support to ensure a smooth, fast deployment for your engineering team.

< 3 weeks
Avg. Integration
99.9%
API Uptime SLA
EXPLORE
Choose Your Integration Path

Structured Integration Packages

Compare our tiered EVM merchant gateway packages, designed to match your project's scale, security requirements, and operational needs.

Feature / SpecificationStarterProfessionalEnterprise

Smart Contract Audit & Security Review

Multi-Chain Deployment (Ethereum, Polygon, Arbitrum, Base)

Custom Payment Flow Logic

Basic

Advanced

Fully Custom

Integration Support & Technical Onboarding

Documentation

Dedicated Engineer

Dedicated Team

Uptime & Performance SLA

99.5%

99.9%

Incident Response Time SLA

12h

1h

Real-Time Analytics & Dashboard Access

Recurring Billing & Subscription Module

Compliance & Regulatory Advisory

Estimated Implementation Timeline

2-4 weeks

4-6 weeks

6-10 weeks

Starting Price

$15,000

$50,000

Custom Quote

how-we-deliver
PROVEN PROCESS

Our Integration Methodology

A structured, four-phase approach designed to deliver a secure, scalable, and production-ready EVM payment gateway in weeks, not months.

01

Discovery & Architecture

We conduct a deep-dive technical workshop to map your business logic, define token standards (ERC-20, ERC-721), and architect a secure, gas-optimized smart contract system tailored to your needs.

1-2 days
Technical Workshop
100%
Requirements Mapped
02

Smart Contract Development

Our engineers build auditable, upgradeable smart contracts using Solidity 0.8+ and OpenZeppelin libraries. Every contract includes comprehensive unit and integration testing for mainnet reliability.

OpenZeppelin
Security Standard
100%
Test Coverage
03

Backend & API Integration

We deploy a secure, scalable Node.js/Typescript backend with RESTful APIs for payment initiation, status polling, and webhook notifications. Includes rate limiting, IP whitelisting, and comprehensive logging.

< 100ms
API Latency
99.9%
Uptime SLA
04

Deployment & Security Audit

We manage the deployment to your chosen EVM network (Ethereum, Polygon, Arbitrum) and coordinate a formal security audit with a trusted third-party firm before mainnet launch.

2-3 weeks
Full Deployment
Certified
Security Audit
security
FULL-STACK ENGINEERING

Custom Blockchain Development

Build secure, high-performance blockchain networks and applications from the ground up.

We architect and deploy custom blockchain solutions tailored to your specific business logic and performance requirements. Our full-stack engineering delivers production-ready networks with sub-3-second finality and >10,000 TPS capacity, built on proven frameworks like Substrate, Cosmos SDK, or Avalanche.

  • Private & Consortium Chains: Permissioned networks for enterprise data and asset management.
  • Public L1/L2 Development: Custom blockchains with native tokens, governance, and validator ecosystems.
  • Cross-Chain Bridges: Secure, audited interoperability protocols for asset and data transfer.
  • Node Infrastructure: Dedicated, geo-distributed validator nodes with 99.9% uptime SLAs.

From initial white paper to mainnet launch, we manage the entire development lifecycle—ensuring security, scalability, and seamless integration with your existing systems.

EVM Gateway Integration

Frequently Asked Questions

Get clear answers on timelines, security, and process for integrating a secure EVM merchant gateway.

A standard integration for a single EVM chain (like Ethereum or Polygon) typically takes 2-4 weeks from kickoff to production deployment. Multi-chain deployments or complex custom logic (e.g., cross-chain settlement) can extend this to 6-8 weeks. We provide a detailed project plan with weekly milestones after 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
24h Response
Directly to Engineering Team
10+
Protocols Shipped
$20M+
TVL Overall
NDA Protected Directly to Engineering Team
EVM Merchant Gateway Integration | Chainscore Labs | ChainScore Guides