This caught my interest, I hire freelancers (normally North American) and if it would help someone I would consider hiring Ukrainians (wherever they are). It seems like it would be tough to confirm that the people you are hiring are actually those in need, and any confirmation process would be most burdensome on the people who actually need it.
One think we can do it lobby the government to accept Ukranian refugees / immigrants, so they can work here (wherever here is, the west).
We've been thinking about that, and decided to err on the side of too lax than too stringent for exactly this reason. Wires to Ukrainian bank would be strong evidence. Red Cross paperwork or refugee visa also seems good enough. Honestly, we're considering simply a signed affidavit (notary paid for by us).
One think we can do it lobby the government to accept Ukranian refugees / immigrants, so they can work here (wherever here is, the west).