Black Holes

have black holes actually been proven to exist? when i was a kid i was all into astronomy and recently i've been looking into it again, and after reading several articles on the subject im still kinda in the dark. if you say wiki black holes there's tons of inferential information about them existing but no references to actual known black holes. also I just read some random post on /b/ (lol, reliable information) saying "as science has proven a blackhole is impossible (NASA news 2006) " <- anyone know wtf article he's referring to.

so tl;dr, blackholes: definately out there or an interesting theory?

I'm that people! Anywho, yes black hole do exist. But here I ask a question nobody is able to answer me, several journals have said that once at a certain point near a black hole time slows down to a crawl. I don't want to get into super gravities affects on time right now. Alright if time stops at a certain point doesn't the compacted object just stop and if so as more matter is gained wouldn't that all stop at somewhat the same point? If so, theoretically should it be possible with tools more advanced than we have be able to see the objects in the blank parts of our universe? This should prove black holes' existence.