Since we already had 10 USDT sent over we only needed to make a spot price purchase. Do the same for the Google Authenticato r link as well and follow the instructions on the screen. Futures contracts and perpetual swaps A futures contract is an agreement to buy or sell a given asset in the future at a predetermined price. You will then be required to enter the purchase amount of the desired cryptocurrency and whether you will be paying with the US dollar or euro.