The current published terms on the official government program page, the identity and licensing of anyone advising, and the payment instructions themselves. A gift described as going to the U.S. government should not be wired to a private escrow account, a consultancy or an intermediary in a third country.
Verify the channel with the same care as the amount
Documentation in this area is thinner than in a petition-based route, which makes the few available checks more important. Read the official page and its published answers directly rather than a summary. Ask the adviser for their licence details and confirm them independently.
Require every instruction in writing, dated, with the current amounts stated rather than described. Where a document has been prepared by an intermediary, compare its figures against the official source line by line, because a stale figure is the most common defect and the easiest to spot. Hypothetical example: an agricultural-tire distributor receives wire instructions naming a private escrow company as the recipient of both the processing fee and the gift, with an assurance that funds will be forwarded.
The instruction does not match the framework as published, and that mismatch is the whole answer. Pressure to move quickly on payment instructions is a reason to slow down rather than a reason to hurry.