the reliable projects you can discuss on conferences where the info is designed to special audiene like wbf, blockshow, coinscrum and other

Very well said. Invite at your own risk and what you can afford to lose but before you invest you need to check first the background.

right now bitcoin is still dominating the cryptocurrency market and perhap for a very long time from now. I believe everything will come to an end, so bitcoin is not an exception. One day in the future, surely bitcoin will be loose in the competitive market and will be replaced by another better coin, but that may be a very long time because bitcoin is still the most powerful currency on the market.