Binance will suspend USDT deposits and withdrawals on the Optimism network at 02:00 UTC on Sept. 17, 2026, or 10:00 Beijing time, to support a 1:1 contract migration. USDT0 will become the replacement token, while the original Optimism-based USDT will be renamed OPUSDTE. Spot, margin, futures trading and Binance Earn services will continue without interruption, and Binance will handle the related technical work for participating users.