Tron USDT Checker

A web app to check if Tron wallet addresses are blacklisted by Tether, and display their current USDT TRC20 balance.

Built with Python + Flask. No API key required.

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Features

• Paste up to 20 Tron addresses at once (one per line)
• For each wallet:
  • 🔴 Blacklisted — flagged by Tether's USDT contract
  • ✅ Clean — not blacklisted, shows current USDT balance
  • ⚠️ Invalid — not a valid Tron address
• Summary panel with total USDT across clean wallets

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How it works

1. Validates each address via TronGrid API
2. Calls the USDT TRC20 contract (isBlacklisted) to check blacklist status
3. If clean, fetches the current USDT balance

USDT Contract: TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t

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Deploy on Railway (free, no credit card)

1. Fork or upload this repo to GitHub
2. Go to railway.app → New Project → Deploy from GitHub
3. Set these in Settings:
   • Start Command: gunicorn app:app
   • Build Command: pip install -r requirements.txt
4. Go to Settings → Networking → Generate Domain
   • Set port to 8080
5. Done — your app is live

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Run locally

pip install -r requirements.txt
python3 app.py

Then open http://localhost:5000

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Project structure

tron-checker/
├── app.py              # Flask backend + TronGrid API calls
├── templates/
│   └── index.html      # Frontend UI
├── requirements.txt
└── README.md

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API used

• TronGrid — public Tron node API, no key needed

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License

MIT