Blacklisted Crypto — Check, Monitor & Query Blacklisted Blockchain Addresses If you work with crypto, you’ve probably come across an address that you wanted to check before sending funds — especially when dealing with USDT, USDC, or other stablecoins. Blacklisted Crypto is a free tool for researching blockchain addresses that have been blacklisted, frozen, or otherwise flagged by token issuers. What you can do 🔎 Check any address Enter a blockchain address and see whether it is associated with a known blacklist or freeze action. 📊 Explore blacklist data Search and browse addresses associated with USDT, USDC, and other supported tokens. 👀 Create watchlists Add addresses to your personal watchlist and monitor them over time. ⚙️ Free JSON API Query the data programmatically and integrate blacklist checks into your own scripts, bots, dashboards, or applications. The goal is simple: make blacklist and freeze information easier to find instead of having to dig through scattered reports and manually search for individual addresses. The project is independent and is not affiliated with Tether, Circle, or any other token issuer. Feedback, feature requests, and ideas are welcome — especially from developers, researchers, traders, and people working with crypto compliance or blockchain investigations.