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...
really? that's it?
no check for the project itself and how valid it is, what is its potential, and if there are any competitors how far they are yet from competing with this project.
you need to check the history of the company or team, did they drop another project? how old this idea is.
don't treat crypto as it is different from the real world projects as we are in a virtual world.
you should always work on this as you are looking for a startup, how would you choose the right startup??