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...
Whoever wants to invest in crypto should not put his money in a project that contains a fake team who have pictures of known people, cartoon pictures, a photo modified in Photoshop, or their LinkedIn account is devoid of experience, Also, They should also have fulfilled many of the project's goals in their roadmap, Their whitepaper should be unique and not stolen from other projects.