That's why you need an auditor, hired CPA's will only verify that the checks were indeed sent to the intended party, not that they are used appropriately.
Don't be naive that these things don't happen, they do.
https://www.sstwp.org/DocumentCenter/View/10907/2022-Final-B...
a con artist will very consistently try to invest in their own scams, does not mean they think of them as genuine