Announcement from Ouyi on Launching Horizen (ZEN) Spot Trading This is a general announcement, and the availability of tokens or products may vary by region. Please check the details in the application. Dear Ouyi user: Ouyi is about to launch Horizen (ZEN), and the specific schedule is as follows: Online Time * ZEN Open Deposit Time: November 17, 2025 21:00 (UTC+8) *ZEN early order placement period: November 18, 2025 from 13:00 to 14:00 (UTC+8) *ZEN/USDT spot trading opening time: 14:00 on November 18, 2025 (UTC+8) *ZEN Open Withdrawal Time: 4:00 PM (UTC+8) on November 18, 2025 Risk control rules for spot opening Price limit rules: During pre order placement and continuous trading periods, the platform will activate an index based limit mechanism. Index based limit price calculation rules: Stage | Maximum Purchase Limit |Sell order minimum price| Pre order pending | Index × (1+J) | Index × (1-J)| Within 10 minutes before the launch of the new coin | Index x (1+X) | Index x (1-X)| 10 minutes after the launch of the new coin | Min [Max (Index, Index x (1+Y)+average premium over the past 2 minutes), Index x (1+Z)] | Max [Min (Index, Index x (1-Y)+average premium over the past 2 minutes), Index x (1-Z)]| Attention: The platform may adjust parameters J, X, Y, Z or switch limit calculation rules based on market conditions, and adjustments will not be notified separately. Please visit:/trade market/info/sport to view real-time rule details. Horizen is a blockchain ecosystem that focuses on achieving privacy and scalability through sidechains. This platform enables enterprises and developers to create their own public or private blockchain and decentralized applications on their distributed networks. *Full English name: Horizen *English abbreviation: ZEN *Contract Address: Base Chain (0xf43eb8de897fbc7f2502483b2bef7bb9ea179229) *View ZEN prices: https://www. (okx.com)/zh-hans/price/horizen-zen Deposit USDT immediately to prepare for ZEN/USDT spot trading: Ouyi will continue to provide you with better products and services! Ouyi team November 17, 2025