1. Lifespan of crypto related projects. If we do manage to sign some sort of contract with a business in the crypto sphere, how can we, from the outside, judge the health and longevity of the project?
I don't think there's a way you could check for that. The service you are offering should have a disclaimer on that.
2. I have absolutely no idea of how to contact companies that we could work for.
You can start by posting a thread in the service section. Post in details the service you offer and also create vacancies for your country residents.