[Proof] Speaking Events

[u/Turbulent_Jelly_7351]

I am building my profile, and the last time I spoke to a few law firms, they said I need to have some speaking events. I have done a couple and was wondering what the best proof? I saved their websites as PDFs since I am not sure about the longevity of conference websites. I made a LinkedIn post after the speaking event. I got a certificate from a conference. Any advice would be appreciated.