SureLink Open Platform

SureLinkEnterprise Payment Gateway Open Platform

Secure, compliant, and low-latency fiat & crypto payment clearing and settlement solutions

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API Reference
SureLink
  • 🛡️

    Robust Security & Authentication

    Complete HMAC-SHA256 signature verification, millisecond-level timestamp anti-replay, nonce isolation, and strict merchant IP whitelisting.

  • ⚡

    Fiat Pay-in & Payout

    Comprehensive Pay-in (Deposit) and Payout (Withdrawal) capabilities with high-converting checkout portals and trader proof review decisions.

  • ⛓️

    Multi-Chain Crypto Deposits & Withdrawals

    Native support for TRON, Ethereum, BSC, and other major chains for USDT assets, with dedicated deposit addresses and automated broadcasts.

  • 🔔

    High-Availability Webhook System

    Outbox-driven transactional events with SSRF protection, exponential backoff retries, and sub-second merchant notifications.