Blacklist Checker Widget

BETA

Embed a USDT/USDC blacklist checker on your website. Your users can verify any TRON or Ethereum address directly on your site — no redirects, no registration required.

Live Demo

Empty state

USDT/USDC Blacklist CheckBETA

With result

USDT/USDC Blacklist CheckBETA

❌TGpnJAXqxmMoPQhaKcPN3jc6nDYbbiyYCzBLOCKED

Installation

Add this code to your HTML — that's it. No API key needed.

HTML

<!-- USDT Blacklist Checker Widget -->
<div id="usdt-checker"></div>
<script src="https://usdtbanlist.com/widget.js"></script>

React / Next.js

Use the API endpoint directly in your React app:

UsdtChecker.tsx

import { useState } from 'react';

const API = 'https://usdtbanlist.com/api/widget/check';

export function UsdtChecker() {
  const [address, setAddress] = useState('');
  const [result, setResult] = useState(null);
  const [loading, setLoading] = useState(false);

  const check = async () => {
    if (!address.trim()) return;
    setLoading(true);
    const res = await fetch(`${API}?address=${address}`);
    const data = await res.json();
    setResult(data);
    setLoading(false);
  };

  return (
    <div>
      <input
        value={address}
        onChange={(e) => setAddress(e.target.value)}
        placeholder="Enter TRON or ETH address"
      />
      <button onClick={check} disabled={loading}>
        {loading ? 'Checking...' : 'Check'}
      </button>
      {result && (
        <div>
          <strong>{result.status === 'blocked' ? '🚫 BLOCKED' : '✅ CLEAN'}</strong>
          <a href={`https://usdtbanlist.com/address/${result.address}`}>
            View details
          </a>
        </div>
      )}
    </div>
  );
}

API Endpoint

Direct API access — no authentication required:

GET Request

GET https://usdtbanlist.com/api/widget/check?address=T...

Response:
{
  "address": "TGpnJAXqxmMoPQhaKcPN3jc6nDYbbiyYCz",
  "network": "trx",
  "isBanned": true,
  "status": "blocked",
  "checkedAt": "2026-04-30T12:00:00.000Z"
}

HTML Widget Options

Dark theme (default)

<div id="usdt-checker" data-theme="dark"></div>
<script src="https://usdtbanlist.com/widget.js"></script>

Light theme

<div id="usdt-checker" data-theme="light"></div>
<script src="https://usdtbanlist.com/widget.js"></script>

Multiple widgets on one page

<div data-usdt-checker></div>
<div data-usdt-checker data-theme="light"></div>
<script src="https://usdtbanlist.com/widget.js"></script>

Rate Limits

Plan	Checks/day	Branding
Free (Beta)	100	"Powered by USDTBanList"