Showing recognised talent in the field

Hey folks.

I am into B2B SaaS for the last 7 years and my recommendation will be given by two CEO and one CTO.

What can be used as a proof for recognised talent in my field?

I was also invited to speak and share insides on building startups, since I worked with early stage community. Will that work?

Also I was running a B2C kitchen for 2 years?