OKX has launched a limited-time "SOL Arbitrage Staking" promotion. From 16:00 (UTC+8) on September 18, 2025, to 23:59 (UTC+8) on October 15, 2025, users who create a SOL smart arbitrage strategy and stake it will be eligible to share in a 300,000-layer token prize pool. The promotion utilizes a five-tiered reward structure, with higher rewards available for higher annualized returns of up to 15%.