I'm going to call my friend out in public over bad event management and ignoring my request.
Is it something you can prove?
I don't know; I think he has something to hide because he would never meet me like he promised to.
If your friend has behaved in an unprofessional manner when you've made a business request, it is reasonable that you would be angry and want an explanation. But you should reconsider calling him out publicly; you should settle your dispute privately, which is much more mature and professional.
I just want people to know that I'm smart and that is obvious that I'm right. I want to prove it to everyone.
You don't have to prove it to people that you're smart. They will just see it and realize that you are smart.