
KEY POINTS
- Two of the wallets blacklisted Tuesday each had a USDT balance of $500,000
- Tether blacklisted 28 wallets in December that allegedly "received billions" in USDT
- It voluntarily froze around $225 million in USDT in a November collaborative operation with the DOJ
Blockchain platform Tether, which is behind the world's largest stablecoin, USDT, has blacklisted four wallet addresses as the crypto firm pursues a crackdown on potentially questionable transactions.