Many people misunderstand or don't understand what an unedited post is:
There is no way for members to see if the post is unedited directly through the forum system. However a quote from another (trusted)member will guarantee that the post hasn't been edited.
So your bitcoin address needs to quoted by someone that is trusted or has at least some reputation on this forum to proof that it's unedited. Many people use this thread to stake their address:
https://bitcointalk.org/index.php?topic=996318.0Woah, off-topic much, you dont know what you're talking about, there actually is a way to know if a post was edited, and what kind of idiot doesnt understand what an unedited post is? stop writing your long useless posts, its sig spaming and i am reporting you to your campaign manager