Hashnest.com cannot run away with your bitcoin asics purchased as bitmain would lose most of its investors and buyers of their bitcoin miners, antpools and hashnest (forcing them into debt and bankruptcy)
but what would you say about Genesis-Mining, then? would you be okay with them or would it be better to stay away?
I have not seen the Genesis-Mining website. If it looks sustainabe/doesn't look like a ponzi. Then Invest the minimum amount in it and see if it returns.
If this is cloud mining:
1. It should state a publically knows mining machine that can publically be bought.
2. It should take an initial payment or rental for the machine.
3. It should have some sort of maintanence costs (even if mentioned at purchase)
4. It should be able to show
unique images of its data centre. (use google image search)
If all of this is correct, you
should be fine! However, it is important to remember that bitcoin mining is gambling! An no site is truly fully trustable!
Just checked the site! Seems ok. Remember that
YOUR CAPITAL IS AT RISK