According to Paolo Ardoino's official Twitter post on May 13, 2025, the cryptic message 'XXI' has prompted the trading community to closely monitor Tether-related news and potential updates. As Ardoino is the CEO of Tether, traders are interpreting the message as a possible signal for upcoming announcements that could impact stablecoin markets and liquidity flows. Market participants are advised to watch for further details from Tether, as any significant product or policy changes may influence USDT trading pairs and overall crypto market sentiment (Source: Paolo Ardoino, Twitter, May 13, 2025).