PayzCore - Accept USDT & USDC Crypto Payments

PayzCore adds stablecoin payment monitoring (USDT/USDC) to your WHMCS billing system. Accept crypto payments on 5 blockchain networks — TRC20 (Tron), BEP20 (BSC), ERC20 (Ethereum), Polygon, and Arbitrum — with automatic invoice crediting via webhooks.

How It Works

Customer views an unpaid invoice and selects PayzCore
If multiple networks are available, customer picks their preferred network
Customer sees a payment page with wallet address, QR code, exact amount, and countdown timer
Customer sends the stablecoin from their wallet
PayzCore detects the transfer on the blockchain and sends a webhook
The module verifies the signature and credits the WHMCS invoice automatically

Key Features

Multi-network: TRC20, BEP20, ERC20, Polygon, Arbitrum
Multi-token: USDT and USDC (USDT only on TRC20)
API-driven config: Available networks auto-detected from your wallet
Automatic invoice crediting via signed webhooks (HMAC-SHA256)
Real-time status polling (15-second intervals)
QR code and copy-to-clipboard for wallet address and amount
Countdown timer with auto-expiry
Static wallet mode with tx hash submission
Admin-customizable text (11 strings) for localization
Connection status indicator in admin settings
Blockchain explorer links on admin invoice view (via hooks)
Test mode with verbose logging

Non-Custodial

PayzCore monitors blockchain addresses. It never holds, transmits, or has access to your funds. All payments go directly to your own wallet.

Requirements

WHMCS 7.x, 8.x, or 9.x
PHP 7.4+
cURL extension
PayzCore account (app.payzcore.com)

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Version Compatibility

Compatible with WHMCS v9.0

Full Version Compatibility

All versions of WHMCS v9.0
All versions of WHMCS v8.13
All versions of WHMCS v8.12
All versions of WHMCS v8.11
Selected versions of WHMCS v8.10
8.10.0
Selected versions of WHMCS v8.9
8.9.0
Selected versions of WHMCS v8.8
8.8.0
All versions of WHMCS v8.7
All versions of WHMCS v8.6
All versions of WHMCS v8.5
All versions of WHMCS v8.4
All versions of WHMCS v8.3
All versions of WHMCS v8.2
All versions of WHMCS v8.1
All versions of WHMCS v8.0
All versions of WHMCS v7.10
All versions of WHMCS v7.9
All versions of WHMCS v7.8

System Requirements

PHP 7.4+, cURL extension, PayzCore account (app.payzcore.com)

* Requirements listed are in addition to the WHMCS default system requirements.

Support for this product

The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.

Visit Website Contact Support

Developed By PayzCore

Changelog

v1.0.0 Released February 26th, 2026

Latest Version

1.0.0 — Initial Release

Multi-network support: TRC20, BEP20, ERC20, Polygon, Arbitrum
Multi-token: USDT and USDC
API-driven network configuration
Automatic invoice crediting via HMAC-SHA256 webhooks
QR code payment page with countdown timer
Static wallet mode with tx hash confirmation
Admin-customizable text fields
Blockchain explorer links in admin invoice view
Test mode with verbose logging