Talking about altcoin , there are no concrete idea of how we could find a legit or trustworthy project though we are tend to believe that there are a possible big reutrns. altcoin is fall of risk and that is not a fact but reality so better to check your project wisely as even those who are being promoted by big people sometimes end up not progressing on the top. so,find your risk and invest only what you can afford to lose.