As one of the most popular digital asset exchange in the world, OKX’s vision is to offer a divesity of trading pairs to our clients and deliver outstanding services though our state-of-the-art trading infrastructure. OKX is pleased to support USDT. Adding USDT to our platform represents our clients could trade a new digital asset and they have alternative for cryptocurrency hedging or arbitrage.

The Universal Metaverse (USM) is a 3D Planet virtual world where users can own lands, build buildings such as stores and art galleries, create and play games. Asset name: Radio Caca Ticker: RACA Total Supply: 443,478,491,084 Circulating Supply: 181,850,767,347 (Data from Dec. 7, source: CoinGecko) Risk warning: Trading digital assets involves significant risk and may result in the loss of your invested capital.

| | Lite | Super | Diamond | | ---------- | ---------- | ---------- | ---------- | |Basic benefits | |Post sell ads | Y | Y | Y | |Post buy ads | N | Y | Y | | Merchant Badge | N | Y | Y | | Listing priority for ads | N | Y | Y | | Customer support | Basic | Priority | Exclusive access | | Advanced features | |Dashboard | N | Y | Y | | Block Trading | N | N | Y（coming soon） | | Ads with verification feature | N | N | Y | | Transaction limits |Buy ads per currency/crypto | 0 | 2 | 5 | |No. of sell

Formula of price limit: Period Max Buy Price Min Sell Price Within 10 minutes after the contracts launched Index *(1+X) Index *(1-X) Contracts launched 10 minutes later Min[Max(Index, Index *(1+Y)+ price movement average within the last 10 mins), Index *(1+Z)] Max[Min(Index, Index *(1-Y)+ price movement average within the last 10 mins), Index *(1-Z)] 2.

Specific price limit rules are as follows: Phase Highest price limit Lowest price limit Within 10 mins of spot/margin listing Index * (1 + X) Index * (1 - X) 10 minutes after spot/margin listing Min[Max(Index, Index (1 + Y) + Avg. premium in last 2 mins), Index * (1 + Z)] Max[Min(Index, Index * (1 - Y) + Avg. premium in last 2 mins), Index * (1 - Z)] Note: The parameters of X, Y, Z will be adjusted according to market conditions.

Specific price limit rules are as follows: Phase Highest price limit Lowest price limit Within 10 mins of spot/margin listing Index * (1 + X) Index * (1 - X) 10 minutes after spot/margin listing Min[Max(Index, Index (1 + Y) + Avg. premium in last 2 mins), Index * (1 + Z)] Max[Min(Index, Index * (1 - Y) + Avg. premium in last 2 mins), Index * (1 - Z)] Note: The parameters of X, Y, Z will be adjusted according to market conditions.

Specific price limit rules are as follows: Phase Highest price limit Lowest price limit Within 10 mins of spot/margin listing Index * (1 + X) Index * (1 - X) 10 minutes after spot/margin listing Min[Max(Index, Index (1 + Y) + Avg. premium in last 2 mins), Index * (1 + Z)] Max[Min(Index, Index * (1 - Y) + Avg. premium in last 2 mins), Index * (1 - Z)] Note: The parameters of X, Y, Z will be adjusted according to market conditions.

, Index *(1-Y)+ Average premium over the past ten minutes), Index *(1-Z)] Adjusted price limit rules: Time X Y Z 8:00 am UTC on Aug 10 (48 hours before delivery) 2% 2% 5% 7:30 am UTC on Aug 12 (30 minutes before delivery) 1% 1% 2% Note: If there is a deviation from the contract price before then, it will be adjusted according to market conditions.

Specific price limit rules are as follows: Phase Highest price limit Lowest price limit Within 10 mins of spot/margin listing Index * (1 + X) Index * (1 - X) 10 minutes after spot/margin listing Min[Max(Index, Index (1 + Y) + Avg. premium in last 2 mins), Index * (1 + Z)] Max[Min(Index, Index * (1 - Y) + Avg. premium in last 2 mins), Index * (1 - Z)] Note: The parameters of X, Y, Z will be adjusted according to market conditions.

Time Highest price limit Lowest price limit Within 10 minutes of spot/margin listing No limit No limit 10 minutes after spot/margin listing Highest price limit = Min [Max (Index, Index × (1 + y%) + Average premium in last 2 minutes), Index × (1 + z%)] Lowest price limit = Max [Min (Index, Index × (1 – y%) + Average premium in last 2 minutes), Index × (1 – z%)] For details on the y and z parameters, refer to the following link: https://www.okx.com/trade-market/info/spot The average premium in the

*(1-Y)+ Average premium over the past 10 minutes), Index *(1-Z)] Adjusted price limit rules: Time X Y Z 8:00AM (UTC) Aug 10 (48 hours before delivery) 2% 2% 5% 7:30AM (UTC) Aug 12 (30 minutes before delivery) 1% 1% 2% Note: If there is a deviation from the contract price before then, the price limit will be adjusted according to market conditions.

(1 - Z)] For the details of X, Y, Z parameters, please visit: /trade-market/info/swap Z equals 3% in 30 mins before weekly futures delivered.

Specific price limit rules are as follows: Phase Highest price limit Lowest price limit Within 10 mins of spot/margin listing Index * (1 + X) Index * (1 - X) 10 minutes after spot/margin listing Min[Max(Index, Index (1 + Y) + Avg. premium in last 2 mins), Index * (1 + Z)] Max[Min(Index, Index * (1 - Y) + Avg. premium in last 2 mins), Index * (1 - Z)] Note: The parameters of X, Y, Z will be adjusted according to market conditions.

Max[Min(Index, Index *(1-Y)+ Average premium over the past 10 minutes), Index *(1-Z)] Adjusted price limit rules: Time X Y Z 48 hours before delivery 2% 2% 5% 30 minutes before delivery 1% 1% 2% Note: 1.

Max[Min(Index, Index *(1-Y)+ Average premium over the past 10 minutes), Index *(1-Z)] Adjusted price limit rules: Time X Y Z 48 hours before delivery 2% 2% 5% 30 minutes before delivery 1% 1% 2% Note: If there is a deviation from the contract price before then, the price limit will be adjusted according to market conditions.