It's hard to choose the correct bounty actually but below are the basic things to look at:
- Dig the domain information (owner, phone, address)
- Read the whitepaper 3-5 times to see how good is the project.
- Look at the project information on the website. no room for error
- Look at the project community, social followers, and partnerships.
- Finally but not least, look carefully at the project team and their LinkedIn profiles; are they really professional enough to handle their project or not?