Cross-Border Payment APIs | Chainscore Labs

overview

CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built by Web3 specialists to power your protocol.

We architect and deploy custom smart contracts on Ethereum, Solana, and Layer 2s. Our development process ensures gas-optimized, auditable code that forms the secure foundation for your application.

Full Lifecycle Development: From initial design and Solidity/Rust coding to deployment and on-chain verification.
Security-First Approach: All contracts undergo internal audits and are built with OpenZeppelin standards before third-party review.
Protocol Integration: Native support for ERC-20, ERC-721, staking logic, governance modules, and custom DeFi primitives.

Deliver a battle-tested, mainnet-ready contract suite in as little as 4 weeks, with a 99.9% uptime SLA post-launch.

We provide comprehensive documentation and a handover package, enabling your team to own and iterate on the codebase with confidence.

key-features-cards

ENTERPRISE-GRADE INFRASTRUCTURE

Core Capabilities of Our Payment Gateway API

Our API delivers the technical foundation for compliant, scalable, and cost-effective cross-border payments, built specifically for FinTechs and Web3 companies.

Multi-Currency Settlement

Send and settle payments in 50+ fiat and 20+ cryptocurrencies. Our unified API abstracts away the complexity of currency conversion, liquidity pools, and on/off-ramps.

Client Value: Launch a single, global product instead of building separate integrations for each region and currency.

50+

Fiat Currencies

20+

Crypto Assets

Regulatory & Compliance Engine

Automated KYC/KYB, AML screening, and transaction monitoring built-in. Our system is designed to meet global standards (FATF Travel Rule, MiCA) and integrates with major compliance providers.

Client Value: Reduce your compliance overhead and legal risk. We handle the regulatory complexity so you can focus on your product.

FATF

Travel Rule Compliant

24/7

Monitoring

Sub-Second Finality with Low Fees

Leverage optimized Layer 2 (Polygon, Arbitrum) and high-throughput chains (Solana) for near-instant settlement. Our smart routing selects the most cost-effective network for each transaction.

Client Value: Offer your users faster, cheaper payments than traditional SWIFT or card networks, with predictable fee structures.

< 2 sec

Avg. Settlement

< $0.01

Avg. Network Fee

Programmable Smart Contract Flows

Embed conditional logic, escrow, and automated payout schedules directly into payment flows using audited smart contracts. Supports ERC-20, ERC-721, and custom token standards.

Client Value: Create sophisticated financial products like recurring subscriptions, milestone-based escrow, or loyalty rewards without building the blockchain logic from scratch.

OpenZeppelin

Security Patterns

ERC-20/721/1155

Token Standards

Real-Time FX & Crypto Pricing

Access live, institutional-grade foreign exchange and cryptocurrency rates. Our aggregation engine pulls from multiple liquidity sources to provide the best available price with minimal slippage.

Client Value: Give your customers transparent, competitive pricing. Eliminate hidden spreads and provide accurate cost estimates upfront.

10+

Liquidity Sources

< 0.5%

Avg. Slippage

Developer-First API & SDKs

RESTful API with comprehensive documentation, Postman collections, and SDKs for Node.js, Python, and Go. Includes a sandbox environment for testing full payment cycles.

Client Value: Integrate and go live in weeks, not months. Our tools are built by developers for developers, reducing integration time and support tickets.

benefits

STRATEGIC ADVANTAGES

Business Outcomes: Beyond Faster Transactions

Our cross-border payment API delivers more than speed. It provides the technical foundation for sustainable growth, operational resilience, and competitive differentiation in the global financial landscape.

Reduced Operational Complexity

Replace fragmented banking relationships and manual reconciliation with a single API. We handle multi-currency liquidity, compliance checks, and settlement, freeing your team to focus on product innovation.

80%

Reduced Dev Time

1 API

Unified Integration

Enhanced Financial Compliance

Built-in AML/KYC screening and transaction monitoring for over 150 jurisdictions. Our system automates regulatory reporting, providing a clear audit trail and reducing your compliance overhead and risk.

150+

Jurisdictions

Real-time

Screening

Predictable Cost Structure

Eliminate hidden FX fees and unpredictable correspondent banking charges. Transparent, per-transaction pricing with no monthly minimums or setup fees, enabling accurate financial forecasting.

60-80%

Cost Savings

Fixed Fee

Pricing Model

Frictionless User Experience

Enable near-instant settlement and transparent fee tracking for your end-users. Provide real-time payment status updates, improving customer satisfaction and reducing support tickets.

< 10 sec

Settlement Time

99.5%

Success Rate

Scalable Global Infrastructure

Our distributed node network ensures 24/7 availability and automatically scales with your transaction volume. Deploy in new markets without rebuilding your payment stack.

99.9%

Uptime SLA

Global

Network Coverage

Future-Proof Architecture

Built on modular smart contracts (Solidity 0.8+) with support for multiple stablecoins and CBDC rails. Easily integrate new payment methods and blockchain protocols as the ecosystem evolves.

Multi-chain

Protocol Support

OpenZeppelin

Security Audit

Choose the Right Path for Your Payment Gateway

Phased Development Tiers: Start Simple, Scale Globally

A structured comparison of our service tiers, designed to match your project's current needs and future growth. Start with a secure foundation and add enterprise-grade features as you scale.

Core Capability	Launch Tier	Growth Tier	Enterprise Tier
Multi-Chain API Access (EVM)
Fiat On/Off-Ramp Integration	Stripe, PayPal	Stripe, PayPal, Plaid	Custom + 5+ Providers
Cross-Chain Settlement (LayerZero, Axelar)
Smart Contract Audit & Deployment	Basic Audit	Full Audit + Gas Optimization	Full Audit + Formal Verification
Compliance & KYC/AML Module	Basic Checks	Advanced Rules Engine	Custom Jurisdictional Rules
Real-Time FX Rate Feeds	Hourly Updates	5-Minute Updates	Sub-Second Updates
Technical Support SLA	Email (48h)	Priority Slack (24h)	Dedicated Engineer (4h)
Uptime & Performance SLA	99.5%	99.9%	99.99%
Implementation Timeline	4-6 Weeks	8-12 Weeks	Custom (12+ Weeks)
Starting Project Cost	$25K	$75K	Custom Quote

how-we-deliver

PREDICTABLE, TRANSPARENT, AND FAST

Our 4-Phase Delivery Methodology

We deliver your cross-border payment gateway in weeks, not months, with a structured process that ensures security, compliance, and seamless integration from day one.

Phase 1: Discovery & Architecture

We conduct a technical deep-dive to define your compliance requirements, token standards (ERC-20, ERC-777), and settlement architecture. You receive a detailed technical specification and project roadmap.

1-2 weeks

Duration

100%

Specification Lock

Phase 2: Core Development

Our engineers build your smart contract suite (payment routers, multi-sig vaults) and backend APIs for FX, liquidity, and settlement. All code follows OpenZeppelin standards and is developed in Solidity 0.8+.

2-4 weeks

Build Time

Gas-Optimized

Contract Focus

Phase 3: Security & Integration

Your system undergoes rigorous internal testing and a formal audit by a third-party security firm. We then integrate with your existing stack (KYC providers, custodians) and target blockchains (Ethereum, Polygon, Arbitrum).

Audit Report

Deliverable

Staging API

Live Environment

Phase 4: Deployment & Scale

We manage the mainnet deployment, configure monitoring (Chainscore Dashboard), and provide comprehensive documentation. Your team receives hands-on training and ongoing support for scaling transaction volume.

Go-Live

Milestone

99.9% SLA

Production Uptime

security

CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built by certified auditors for your Web3 product.

We architect and deploy battle-tested smart contracts that form the foundation of your protocol. Our development process is built on security-first principles, utilizing OpenZeppelin libraries and following EIP standards for ERC-20, ERC-721, and custom token logic.

Security Audits: Every contract undergoes internal review by our certified auditors before deployment, significantly reducing vulnerability risk.
Gas Optimization: We write efficient Solidity 0.8+ code, targeting up to 40% lower gas costs for end-users.
Full Lifecycle Support: From initial design and testing on Hardhat/Foundry to deployment and verification on mainnet (Ethereum, Polygon, Arbitrum).

Deliver a secure, auditable, and cost-effective smart contract suite in as little as 3-4 weeks, accelerating your path to a secure mainnet launch.

Cross-Border Payment Gateways

Frequently Asked Questions

Get clear, technical answers about integrating blockchain-powered payment rails for your business.

From kickoff to production, a standard integration takes 2-4 weeks. This includes API key provisioning, smart contract deployment on your chosen chain (e.g., Polygon, Arbitrum), compliance checks, and a 1-week pilot phase with testnet funds. Complex multi-chain or multi-currency deployments may extend to 6-8 weeks.

Cross-Border Payment Gateway APIs

Smart Contract Development

Core Capabilities of Our Payment Gateway API

Multi-Currency Settlement

Regulatory & Compliance Engine

Sub-Second Finality with Low Fees

Programmable Smart Contract Flows

Real-Time FX & Crypto Pricing

Developer-First API & SDKs

Business Outcomes: Beyond Faster Transactions

Reduced Operational Complexity

Enhanced Financial Compliance

Predictable Cost Structure

Frictionless User Experience

Scalable Global Infrastructure

Future-Proof Architecture

Phased Development Tiers: Start Simple, Scale Globally

Our 4-Phase Delivery Methodology

Phase 1: Discovery & Architecture

Phase 2: Core Development

Phase 3: Security & Integration

Phase 4: Deployment & Scale

Smart Contract Development

Frequently Asked Questions

Get a free quote.

Get In Touch
today.

Cross-Border Payment Gateway APIs

Smart Contract Development

Core Capabilities of Our Payment Gateway API

Multi-Currency Settlement

Regulatory & Compliance Engine

Sub-Second Finality with Low Fees

Programmable Smart Contract Flows

Real-Time FX & Crypto Pricing

Developer-First API & SDKs

Business Outcomes: Beyond Faster Transactions

Reduced Operational Complexity

Enhanced Financial Compliance

Predictable Cost Structure

Frictionless User Experience

Scalable Global Infrastructure

Future-Proof Architecture

Phased Development Tiers: Start Simple, Scale Globally

Our 4-Phase Delivery Methodology

Phase 1: Discovery & Architecture

Phase 2: Core Development

Phase 3: Security & Integration

Phase 4: Deployment & Scale

Smart Contract Development

Frequently Asked Questions

Get In Touch today.

Get In Touch
today.