https://coinut.com just added 30-minute binary options. Please join and make 20x profit in 30 minutes.
How it works? There are CALL options and PUT options.
For CALL options, you spend some money to buy a contract in the hope that the price at the end will be above the strike price you choose. If the final price is above the strike price, you get 0.01 BTC payoff; otherwise, you get nothing and thus lose the original premium you pay.
The premium you pay mainly depends on the strike price you choose. The higher the strike price, the harder the final price will be above that, and thus the cheaper the premium will be.
So to make 20x profit within 30 minutes, you need to choose a high strike price so you pay very little premium. But your chance of wining is also lower. But that does not mean it is impossible or we are scamming. We are not a scammer.
It's not exactly the same as gambling, because sometimes, you can find that the market may not be able to price the options correctly and you can take advantage of that. Sometimes you just find the price of an option is lower than what it should be. So if you have the skills to analyze, you can make profit consistently. It's not like gambling where you have no control at all.
How to estimate the correct price that it should be? The basic idea is that the correct price should be the probability that it goes above the strike price times 0.01 BTC.
So if right now the price is 236.61, if you select 236.75 as the strike price and you estimate the probability that it goes above 236.75 is 0.2, then the price should be 0.2*0.01 BTC. If you find the market price lower than 0.2*0.01, you can then confidently buy. Maybe you lose one or two times, but if you do this frequently, you will find that you are making money consistently.
PUT options are similar. The difference is that you buy a contract in the hope that the final price will be below the strike price. So the lower the strike price, the less you pay for the contract, and the less likely you will win, but if you win, you win more.
How do we calculate the price index? We obtain the top bid and ask price ticks from Bitfinex, BTC-e, and Bitstamp every 2 seconds (We will increase the frequency later and if you have better suggestion, please let me know). Suppose they are Bid1, Ask1, Bid2, Ask2, Bid3, and Ask3 respectively for the three exchanges. And then we calculate the index as (Bid1 + Ask1 + Bid2 + Ask2 + Bid3 + Ask3)/6.