Illegality of this aside (terrible idea, unless you want to go to jail), there are even multiple practical issues:
1. What will the other company do with the profits? They will have to pay tax on it. Or if they are based in a
tax haven - of course, suddenly paying 80% of your profit to a
tax haven company surely won't arise suspicion.
2. How will you make sure the other party won't start blackmailing you?
3. How will you
cash out the
crypto?
It's just a terrible idea. Just pay for proper advice and do it legally.