As of now bitcoin is the king and most potential to all coins who is already exist in the crypto market, and until now there is no one who can defeat unless some of the coins have a big improvement and those developers do their best for their coins. But let see because for sure in the future they have coin who can defeat to the bitcoin maybe it's already develop or maybe not but it's good because we have bitcoin and the future next bitcoin I hope it will gives us a lot of profit like what bitcoin did to us and hoping it's more potential to it.