Hi,
are you speaking about an online certification or an in person course?
I give professional Rust courses in Europe through https://asquera.de, in the US I know at least of https://integer32.com. (Courses in South America might be incoming) But at least for me, that's an on-premise offering.
I give out certificates for the course material, but there's no formal certification path. That's a bit of a catch - I'm squarely rooted in the FOSS community and not that much in the enterprise world, where formal certification doesn't matter that much. So, there's no clear case for me to offer certification. Also, the business is viable, but not large enough to go through all the effort of researching and investing into what a proper certification path would entail.
We (asquera) do consider providing courses to a wider audience currently, but I'm not sure when I can manage to offer that.
So, my question there would be: what would be the minimum necessary for you to cover your argument? If courses and training are available, would that be enough or do you need a certification from some authority?
Best,
Florian