Starlynk Pay

Cross-Border Stablecoin Payments & Acceptance Infrastructure

Built on Mantle

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1. Project Overview

Starlynk Pay is a cross-border stablecoin payment and settlement infrastructure designed to connect Middle East, Europe, Africa, and Asia through a unified, Mantle-native execution layer. The project integrates AE Coin, USDQ, and other compliant stablecoins to enable real-time payments, merchant acceptance, and institutional settlement, without relying on traditional correspondent banking networks.

Rather than building another wallet or point solution, Starlynk Pay focuses on financial plumbing: routing, settlement, and acceptance of stablecoin-based payments across fragmented jurisdictions and currencies.

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2. Problem Statement

Fragmented Global Payments

International payments today remain:

• Slow (T+2 to T+5)

• Expensive (multiple intermediaries)

• Opaque (limited transparency)

• Poorly integrated with emerging markets

This is especially acute in Africa and emerging markets, where:

• Banking access is limited

• FX liquidity is fragmented

• Local payment rails are disconnected from global settlement networks

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Stablecoins Exist, but Infrastructure Is Missing

While stablecoins like AE Coin and USDQ already exist:

• They are siloed by region

• Lack unified routing and acceptance layers

• Are difficult to integrate into real merchant and trade workflows

Starlynk Pay addresses this gap.

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3. Solution: Starlynk Pay on Mantle

Starlynk Pay provides a three-layer architecture:

Layer 1 – Payment & Acceptance Layer

• Merchant acceptance (B2B / B2C)

• Stablecoin invoicing

• Payment APIs and SDKs

• Fiat ↔️ stablecoin on/off-ramps

Layer 2 – Routing & Liquidity Layer

• Multi-stablecoin routing (AE Coin, USDQ, others)

• FX normalization

• Regional liquidity aggregation (Africa, Middle East, Europe)

Layer 3 – Mantle Settlement Layer

• Atomic payment settlement

• Low-cost, high-throughput execution

• Deterministic finality

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4. Key Integrations

AE Coin (Middle East)

• Regional stablecoin for Gulf markets

• Used for inbound/outbound settlement

• Supports MENA trade and remittance corridors

USDQ (Europe)

• Euro-denominated, compliance-oriented stablecoin

• Enables EU-facing payments and settlements

• Bridges European merchants and institutions

African Network – LinkOTC.com

• OTC liquidity and local FX access

• Stablecoin ↔️ local currency conversion

• Supports real merchant and trade use cases across Africa

Starlynk Pay Platforms

• slkpay.com – Enterprise payment and settlement portal

• slkpay.io – API-first payment infrastructure for developers and partners

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5. Cross-Border Payment & Acceptance Flow

Example Flow: Europe → Africa

1. EU client pays in USDQ

2. Starlynk Pay routes payment via Mantle

3. Atomic settlement executed on Mantle

4. Liquidity bridged through LinkOTC

5. African merchant receives stablecoin or local currency

All without:

• SWIFT

• Correspondent banks

• Multi-day settlement delays

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6. Atomic Settlement on Mantle

The core innovation is atomic payment settlement:

• Payment instruction

• Currency routing

• Final settlement

are executed in a single Mantle transaction.

If any step fails → full revert

No partial settlement, no reconciliation risk.

This design makes Mantle essential, not optional.

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7. Why Mantle

Starlynk Pay requires:

• Predictable low fees

• High transaction throughput

• EVM compatibility for enterprise integration

Mantle provides:

• Payment-scale economics

• Fast finality

• Infrastructure suited for real transaction volume

This would be cost-prohibitive on L1.

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8. Real-World Traction

• Live payment rails via slkpay.com / slkpay.io

• Active African liquidity network via LinkOTC

• Existing cross-border OTC and merchant settlement flows

• Institutional and emerging-market use cases

This is not a conceptual demo—it is an extension of a live system.

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9. Hackathon Scope & Deliverables

During the hackathon, the team focuses on:

• Mantle-native settlement contracts

• Multi-stablecoin routing logic

• Cross-region payment demo:

• AE Coin ↔️ USDQ ↔️ Africa

• Documentation & technical review materials

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10. Vision

Starlynk Pay aims to become a global stablecoin acceptance and settlement network, connecting compliant regional stablecoins into a unified execution layer.

By anchoring settlement on Mantle, Starlynk Pay transforms stablecoins from isolated instruments into real payment infrastructure.

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One-Line Hackathon Summary

Starlynk Pay is a Mantle-native cross-border payment infrastructure integrating AE Coin, USDQ, and African liquidity networks to enable real-time stablecoin acceptance and settlement without traditional banking rails.

Starlynk Pay – Progress During the Hackathon During the Mantle Hackathon, the Starlynk team focused on delivering a Mantle-native cross-border stablecoin payment prototype, prioritizing atomic settlement, multi-stablecoin routing, and real-world payment feasibility. Architecture & Design • Finalized a three-layer architecture separating payment acceptance, routing/liquidity, and Mantle settlement • Defined atomic payment flows ensuring routing and settlement execute in a single on-chain transaction • Established clear on-chain / off-chain responsibility boundaries Smart Contract Development • Implemented Mantle-based settlement contracts for atomic stablecoin payments • Built routing logic supporting AE Coin and USDQ • Ensured revert-on-failure guarantees to prevent partial settlement Integration & Routing • Integrated regional liquidity inputs from Africa (LinkOTC) • Simulated cross-border flows connecting Europe → Middle East → Africa • Validated FX normalization and settlement finality on Mantle Demo & Validation • Delivered an end-to-end demo showing USDQ or AE Coin payments settling via Mantle • Demonstrated merchant acceptance and payout into stablecoins or local liquidity • Verified low-fee, high-throughput execution suitable for payment-scale usage Documentation & Review • Produced a Mantle-specific pitch deck and technical documentation • Prepared reviewer-focused materials covering architecture, settlement logic, and real-world traction The outcome is a Mantle-ready payment infrastructure demonstrating how regional stablecoins can be unified into a single atomic settlement layer for cross-border payments.

Starlynk Pay

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