Don't fret, my friend, It sounds like you are in a very good position to negotiate. The CEO/other members of the team do NOT want a Facebook on their hands, so

Don't fret, my friend, It sounds like you are in a very good position to negotiate. The CEO/other members of the team do NOT want a Facebook on their hands, so it's likely that they'd want to work this out either now or later. I am not familiar with Canadian law at all, so unfortunately, I can't help you with that. But if it's anything like US law, all of those informal pieces of "evidence" would be enough to prove your equity. Remember- you have a lot of bargaining chips. You can very strategically negotiate your way to the amount of equity you deserve. Is your company incorporated in Canada or the US?