Example:
I open a call option on BTC at $300. The option cost me $2 and will expire in August. You have a person that opens a option and you have a person that close this option. The person that agree will receive $2 as premine, his BTC will be locked till August. If BTC is trading below $300 then he won that $2 and the person that open the call option lost his $2, if BTC is trading above $300, for example $350 then the person that close the option HAVE to sell his BTC for $300 to the person that opened the call, and this means that this person can resell that BTC on the market and made a profit of $50 on his investment of $2, so 2500% profit. the person that close the option sold his BTC at $300 + $2 (premine) so his value of BTC that he sold was $302 and meaning that he could have sold his BTC at $350 at current market conditions so he indirectly lost $48, in the situation it was below $300 then he won $2 without doing anything just that 1 BTC was locked in his account.
Your example does not explain how the market will function. What platform do you agree on? Where are the details of the option contract listed and traded? Where are the funds locked away during the option contract period? Who enforces the option at expiration?
You more or less just showed an example of how options work not how any type of trading platform would work. Have fun with your bags guys don't say I didn't warn ya.