Resume?

I got asked to do a one day gig to fill in for someone in a few months. Gig is pretty simple, X32 running only local inputs for about 10 meetings throughout the day, which are also getting a livestream mix. Basic stuff.

I've been asked to provide a "resume" in order to prove I am qualified to do the show. Has anyone had to do this for a one off fill in event? I don't have a resume as I have my own production company since 2011. How would I go about making something to prove the work? I'm only familiar with resumes in the traditional job hunting sense, not in the capacity of proving my own self employed skills that I've gathered over the last 15 years.