How do these advisors contribute to the project?
Each advisor contribute in his own way, depend on his background and experience.
Can you specify your question?
I would like to add onto his question.
Usually advisors are just big names that look good on a project, like a trophy.
How can we be sure this is not the case here?
Because this is how we chose them and this is what we want from them.
Have a look in their bio, see the diversity, each one contributes in a different matter.
By the way, even big names are not necessarily a bad things. its a person that you trust that say about your project that its legit, so its also important.
But yet, most of the advisors are working with us on a daily basis and give us from their experience, skills, and connections.