After the adjustment, the maximum number of pending orders per trading symbol will be 500. For example, for the perpetual swap contract BTC-USDT-SWAP, the futures contract BTC-USDT-230707, and the spot BTC-USDT, each will support a maximum of 500 pending orders. The maximum number of pending orders per account remains unchanged at 4,000. The existing rules for options trading will not be changed.

Interest-free quota Interest-free limit Asset Interest-free limit USDT 20000USDT+Max（0，Cross equity of USDC） USDC 5000 BTC 1 LTC 10 ETH 5 ETC 2000 XRP 5,000 EOS 500 BCH 5 BSV 5 TRX 30,000 LINK 50 DOT 50 ADA 500 ALGO 500 ATOM 20 CRV 100 FIL 10 DASH 2 IOST 10,000 IOTA 500 KNC 200 NEO 10 ONT 300 QTUM 100 THETA 100 SUSHI 30 SUN 20 XLM 1,000 UNI 20 XMR 2 XTZ 100 ZEC 2 YFI 0.01 YFII 0.1 Notes: The maximum interest-free range is calculated on a per-account basis, which means each main account or sub-account

Details as follow: USDT-margined perpetual swap： Asset Tier-1 max. open contracts Step size to next tier (contracts) Basic maintenance margin ratio Basic initial margin ratio BTC 50,000 500,000 0.5% 1.0% ETH 100,000 400,000 1.0% 2.0% EOS 50,000 200,000 1.0% 2.0% LTC 250 1,000 1.0% 2.0% BCH 500 2,000 1.0% 2.0% ETC 500 500 1.5% 3.0% XRP 500 1,000 1.5% 3.0% TRX 500 1,000 2.0% 5.0% BSV 100 200 2.0% 5.0% USDT-margined futures: Asset Basic risk limits (contracts) Step size to next tier (contracts) Basic

Prize Pool for MASK IFO Level Users to Share Prize Pool (MASK) 1th 10 500 2th 50 100 3th 200 50 4th 500 20 5th 2000 10 Details: https://www.OKX.com/promotion/UHWS/001 You can learn more about Mask Network here : Mask Network Risk warning: Trading digital assets involves significant risk and may result in the loss of your invested capital.

Details as follows: Normal Users Tier Total OKB Holding Perpetual Swap 30-Day Trading Volume (BTC) Maker Fee Taker Fee Lv1 < 500 < 5,000 0.020% 0.050% Lv2 ≥ 500 < 5,000 0.018% 0.045% Lv3 ≥ 1,000 < 5,000 0.017% 0.040% Lv4 ≥ 1,500 < 5,000 0.016% 0.035% Lv5 ≥ 2,000 < 5,000 0.015% 0.030% VIP Users Tier Perpetual Swap 30-Day Trading Volume (BTC) Maker Fee Taker Fee VIP1 ≥ 5,000 0.010% 0.030% VIP2 ≥ 10,000 0.005% 0.030% VIP3 ≥ 20,000 0.000% 0.030% VIP4 ≥ 60,000 -0.005% 0.030% VIP5 ≥ 100,000 -0.008% 0.030%

Let’s assume their OKB holding snapshots are as follows: Snapshot A B C D Minimum OKB Holding within 3-day 50 5 500 100 Average OKB Holding within 3-day 2,000 5 500 1,000 According to the table above, the allotment coefficient of user A, B, C, and D will be 20, 1, 30, and 20 respectively. Let’s say the session supply is 2,000 tokens, then the pledge of user A, B, C, and D will be 500, 50, 1,000 and 1,000 respectively.

Specific adjustment details are as follows: ADAUSDT futures Tier Min. amount (Cont) Max. amount (Cont) Maintenance margin ratio Min. initial margin ratio Max. leverage 1 0 100 1.00% 1.30% 75 2 101 200 1.50% 2.00% 50 3 201 500 2.00% 5.00% 20 4 Increase by 500 conts from the previous tier Increase by 500 conts from the previous tier Increase by 0.5% from the previous tier Increase by 0.5% from the previous tier Max. leverage of the tier BCHUSDT futures Tier Min. amount (Cont) Max. amount (Cont) Maintenance

Contract Name No. of Long(+)/Short(-) Positions Open Order Contracts No. of Pending Order Contracts 1 BTCUSD-191227-7500-C -500 Buy 5000 Sell 750 Buy 6000 2 BTCUSD-191227-8000-C 1000 Sell 1200 N/A The number of contracts in the order to be placed + number of contracts in open orders of the same direction + number of contracts currently held = 6000+5000-500 = 10500.

Specific adjustment details are as follows: Before-adjusted tiers of DOGEUSDT perpetual contract: Tier Min. amount (Cont) Max. amount (Cont) Maintenance margin ratio Min. initial margin ratio Max. leverage 1 0 500 1.00% 1.30% 75.00 2 501 1,200 1.50% 2.00% 50.00 3 1,201 5,000 2.00% 5.00% 20.00 4 5,001 10,000 2.50% 5.50% 18.18 5and above Increase by 5,000 conts from the previous tier Increase by 5,000 conts from the previous tier Increase by 0.5 % from the previous tier Increase by 0.5 % from the previous

2,000 2,000 4,000 EOS 1,000 4,000 4,000 8,000 BCH 1,000 4,000 4,000 8,000 ETC 1,000 1,000 1,500 1,500 XRP 1,000 2,000 5,000 5,000 TRX 1,000 2,000 2,500 2,500 ADA 1,000 1,000 3,000 3,000 ALGO 1,000 1,000 5,000 5,000 ATOM 1,000 1,000 5,000 5,000 COMP 500 500 1,000 1,000 DASH 2,000 2,000 3,000 3,000 DOGE 1,000 1,000 5,000 5,000 IOST 1,000 1,000 2,000 2,000 IOTA 1,000 1,000 6,000 6,000 KNC 1,000 1,000 10,000 10,000 LINK 4,000 2,000 6,000 6,000 NEO 1,000 1,000 2,000 2,000 ONT 1,000 1,000 3,000 3,000

Specific adjustment details are as follows: Instruments Tier Before After Max. amount (Cont) maintenance margin requirement Min. initial margin ratio Max. leverage Max. amount (Cont) maintenance margin requirement Min. initial margin ratio Max. leverage HUSDT Perpetual 1 500 1.00% 2.00% 50 250 1.00% 2.00% 50 2 1,000 1.50% 2.50% 40 500 1.50% 2.50% 40 3 5,000 3.00% 5.00% 20 1,000 3.00% 5.00% 20 4 Increase by 5000 conts from the previous tier Increase by 0.5% from the previous tier Increase by 0.5%

The order amount is less than the predefined average amount of 500 contracts, so the bot buys 488 contracts of sliced order at 10130.29 USDT. If the order is not fully filled, it will be canceled directly, which means the sliced order is an IOC order. The bot will place orders constantly based on the predefined time intervals*random ratio (0.5~1) until the total filled amount reaches the predefined total order amount.

Reach minimum 200/500/1000 USDT of total trading volume during the campaign (buy/sell is accepted) How to win: The first 300 users who fulfill the requirements will be eligible for the rewards based on the table below: | Super rewards | P2P trade volume requirements | | ---------- | ---------- | | 5 USDT | Buy at least 50 USDT on OKX P2P & have a total trading volume from 200 to <500 USDT during the promotion period | | 10 USDT | Buy at least 100 USDT on OKX P2P & have a total trading volume from

Rank Rewards 1st place 2,000 USDT 2nd place 1,500 USDT 3rd place 1,000 USDT 4th - 10th place 500 USDT 11th - 20th place 200 USDT 21st - 50th place 100 USDT 51st - 100th place 50 USDT Promotion B This promotion is exclusively for new Dual Investment users who have not subscribed to Dual Investment before the start date of this promotion. Rewards are on a first-come, first-served basis and a maximum of 2,000 eligible users will qualify to receive the rewards. Task No.

We'll reimburse your first 10 trades, or up to a maximum of $500, whichever is lower. Terms & Conditions: The promotion takes effect 14 days after you've received the email. Reimbursement for the first 10 trades or a maximum of $500, whichever is lower.