to prove they're not scammer project and minimize your investment of being scam...
1. look for the team if they're legit and real human... prove to yourself if they're human and real, not fake linkin from russia, reddit or facebook stuff...
2. list your find...
Good advice mate, always invest what you can afford to lose just in case because anything can happen at any time, crypto projects are unpredictable, the ones that looks bad or not good enough can bring the best profits sometimes, do your own research and make good decisions.