Golden Finance reported that Argentine authorities have ordered Tether to freeze 3.5 million USDT related to Rainbowex, which is suspected of being a pyramid scheme that affects thousands of people. The operation involved 22 search warrants and 22 people were detained. Rainbowex misled investors with promises of cryptocurrency returns but operated a closed-loop system that denied withdrawals. An investigation revealed that actors were hired to impersonate company representatives at the event.