Dear OKX users, OKX is proud to announce that Zcash (ZEC) and Dash deposit service is now available. Spot trading service will start at 09:00 pm Beijing Time on 13th November, 2017. OKX friendly reminder: Digital asset is a high-risk investment instrument. Users should fully understand the risks and consequences involved in trading these cryptocurrencies. OKX will continue to provide the best products and services to our customers! OKX November 13, 2017

For the withdrawal start date and time of NEO, GAS, ZEC and DASH, please note the below schedules: NEO & GAS – 22 November 16:00(HKT) ZEC – 23 November 16:00(HKT) DASH – 24 November 16:00(HKT) Friendly reminder: As the transaction of digital assets involve extensive risks, you are reminded to assess your risk tolerance before participating in these trades. As always, we are committed to provide you with the best products and services! OKX 21 November, 2017

Specifications DASHUSD Perpetual Swap: Feature Details Underlying DASH/USD Index Settlement Coin DASH Face Value USD10 Price Quotation 1 DASH value calculated in USD equivalent Tick Size 0.01 Leverage 0.01-20x Funding Rate Clamp(MA(((best bid + best offer)／2 - spot index price) / spot index price - interest), -0.3%, 0.3%), interest = 0 Trading Hours 7*24 Settlement Time 08:00 every day (UTC) DASHUSDT Perpetual Swap: Feature Details Underlying DASH/USDT Index Settlement Coin USDT Face Value 0.1 DASH

/BTC OKX DASH/BTC 16.66% 31.25% Binance DASH/BTC 16.66% 31.25% OKX_INDEX DASH/USDT 16.66% 6.25% Kucoin DASH/USDT 16.66% 6.25% Coinbase DASH/USD 16.66% 18.75% Gate DASH/USDT 16.66% 6.25% DASH/USD OKX DASH/USDT 20.00% 33.33% Binance DASH/USDT 20.00% 33.33% Kucoin DASH/USDT 20.00% 6.66% Coinbase DASH/USD 20.00% 20.00% Gate DASH/USDT 20.00% 6.66% DASH/USDT OKX DASH/USDT 25.00% 41.66% Binance DASH/USDT 25.00% 41.66% Kucoin DASH/USDT 25.00% 8.33% Gate DASH/USDT 25.00% 8.33% ELF/USD Gate ELF/USDT 25.00%

Supported Chains (Compatible with Keystone): App: EVM, ETC, Bitcoin, Litecoin (LTC), Bitcoin Cash (BCH), Dash (DASH) Browser extension: EVM, Bitcoin Features: Send, Receive, Swap, and so on.Getting Started To get started, you may prepare the following: Keystone hardware wallet Get ready with your Keystone 3 or Keystone 3 Pro hardware wallet. OKX app Open the OKX official website, and download the OKX app. You can also search OKX on the App Store or Google Play.

Details as follow: Coin-margined perpetual swap： Asset Basic risk limits before adjustment (contracts) Step size to next tier before adjustment (contracts) Basic risk limits after adjustment (contracts) Step size to next tier after adjustment (contracts) ETH 10,000 20,000 20,000 40,000 ADA 1,000 1,000 4,000 4,000 ALGO 1,000 1,000 2,000 2,000 ATOM 1,000 1,000 2,000 2,000 DASH 1,000 1,000 2,000 2,000 IOST 1,000 1,000 2,000 2,000 IOTA 1,000 1,000 2,000 2,000 KNC 1,000 1,000 2,000 2,000 LINK 1,000 1,000

During maintenance, features of market quote, order placement, order cancellations, order amendments, margin addition and transfer could be affected for the following 16 currencies: ADA/ALGO/ATOM/DASH/IOST/IOTA/KNC/LINK/NEO/ONT/QTUM/THETA/XLM/XMR/XTZ/ZEC coin-margined and USDT-margined Perpetual Swap Trading. The system maintenance will impact users of website, APP, the desktop client and API access.

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

Contract type Coins X Y Z USDT & Coins Margined Futures (Weekly/Bi-weekly) All 5% 4% 15% USDT & Coins Margined Futures (Quarterly/Bi-quarterly) All 5% 6% 25% Z of the Weekly contract within 30 minutes before delivery is 1% Perpetual： Tiers Coins X Y Z Tier1 BTC、ETH、LTC、ETC、XRP、EOS、BCH、TRX、BSV、LINK、DOT 2% 2% 5% Tier2 DOGE、BTM、ADA、ATOM、AVAX、FLM、OMG、KSM、MKR、ALGO、 ONT、BTT、XMR、REN、QTUM、STORJ、XLM、KNC、ZEC、XTZ、LRC、 YFII、WAVES、IOTA、IOST、BAND、NEO、ZIL、BAT、TRB、ANT、SNX、 UMA、BAL、WNXM、SRM、JST、RSR、COMP、ZRX、THETA、DASH

Details as below: Contract Type Currency Coin-margined Perpetual Swap ALGO, ATOM, CRV, DASH, FIL, IOST, IOTA, KNC, NEO, ONT, QTUM, SUN, SUSHI, THETA, UNI, XLM, XMR, XTZ, YFI, YFII, ZEC To effectively improving fund utilization, the user's transaction contract's realized profit and loss will be immediately carried over to the account balance in this launch. You can withdraw your profit at any time, without waiting for settlement at a fixed time every day.

Details as follow: USDT-margined perpetual swap： Asset Basic risk limits (contracts) Step size to next tier (contracts) Basic maintenance margin ratio Basic initial margin ratio BTC 1,000 10,000 0.5% 1.0% ETH 2,000 8,000 1.0% 2.0% EOS 1,000 4,000 1.0% 2.0% LTC 500 2,000 1.0% 2.0% BCH 1,000 4,000 1.0% 2.0% ETC 1,000 1,000 1.5% 3.0% XRP 1,000 2,000 1.5% 3.0% TRX 1,000 2,000 2.0% 5.0% BSV 200 400 2.0% 5.0% DASH 2,000 2,000 2.0% 5.0% LINK 4,000 2,000 2.0% 5.0% NEO 1,000 1,000 2.0% 5.0% USDT-margined

Contract type Currency USDT-margined perpetual swap BTC, LTC, ETH, ETC, XRP, EOS, BCH, BSV, TRX, LINK, DOT, 1INCH, ADA, AAVE, ALGO, ANT, ATOM, AVAX, BAL, BNT, BAND, BAT, BTM, BTT, COMP, CVC, CRV, DASH, DOGE, FIL, FLM, GRT, EGLD, IOST, IOTA, JST, KNC, KSM, LRC, MKR, NEO, NEAR, OMG, ONT, QTUM, REN, RSR, SNX, SRM, STORJ, SUN, SUSHI, SWRV, THETA, TRB, UMA, UNI, WAVES, WNXM, XLM, XMR, XTZ, YFI, YFII, ZEC, ZEN, ZIL, ZRX USDT-margined future BTC, LTC, ETH, ETC, XRP, EOS, BCH, BSV, TRX, LINK, DOT As part

Crypto Interest-free quota (crypto amount) USDT 20,000 USDT + USDC equity available in your cross-margin account USDC 5,000 BTC 1 LTC 10 ETH 5 ETC 2,000 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 For more details, refer to the product documentation on interest calculation.

0.700 0.800 2 0.500 0.700 3 0.400 0.650 4 Decrease by 0.1 from the previous tier Decrease by 0.05 from the pervious tier CORE 1 0.800 0.700 2 0.700 0.500 3 0.650 0.400 4 Decrease by 0.05 from the previous tier Decrease by 0.1 from the pervious tier CRO 1 0.850 0.700 2 0.820 0.600 3 0.760 0.400 4 Decrease by 0.03 from the previous tier Decrease by 0.1 from the pervious tier CRV 1 0.850 0.800 2 0.820 0.750 3 0.760 0.650 4 Decrease by 0.03 from the previous tier Decrease by 0.05 from the pervious tier DASH