Well, there is not strait jacket rule to follow in order to detect whether a project is scam or not, however, there are some few checks and tips to include in the research to ascertain a good level of confidence about the authenticity of the project. Firstly, during the research, the investor must look out for the actual profile of the team behind the project. Here, the investor must follow the social media outlets of the team members and come out with accurate information about their data. The data must be coherent and valid as this will help determine the expertise level of the team. Secondly, the investor must look out for the product and its demand level on the market. This part helps the investor to know how serious the project is especially if the project has an already functioning product on the market.
It would do well to remind people also that authenticity of the project does not really say much about the intention to scam or not. If I were a scammer, I'd want to create an authentic project. An actual white paper, an actual blockchain even an actual product that works, etc. The more I give people to see and use, the more they will invest.
It's really important to try and see past the hype and get a sense of the developers and community, if they're real, or if they're just on for the ride.