For a simple example, you go to see a house and the developer asks you to pay a deposit to get a preferential price. If the price drops at that time, you can choose not to buy it, and lose the deposit at most. If our house prices go up, you will make a difference. This is a choice. Margin is the premium of option. Bitoffer option provides 2 minutes, 5 minutes, 1 hour, 1 day, 7 days.

For example, when the current price of Bitcoin is $9,000, after analysis, you think that the probability of Bitcoin rising in the next hour is very high, so you open a call option with a period of 1 hour, and the cost is about $5. Sure enough, Bitcoin rose by $500 in the next hour, and the system will automatically settle for one hour. In fact, it doesn't need manual operation, and you will get 500 dollars in return.

So when you pay the down payment, the house mortgage formalities have been completed, but the house has not been delivered yet. If the house price falls beyond your down payment, the bank will repossess the house. This is the liquidation of futures, and the down payment is equivalent to the margin in futures. ? This is the difference between futures and options. Choice is the right to choose the future. ?