Is Bloodraven Really The 3 Eyed Crow? (Solved)

When Bran gets to the cave and meets the last greenseer Bloodraven he directly asks him if he is the 3-eyed crow from Bran's dreams. The answer Bloodraven gives is confusingly asking "A... Crow?" This has lead many people to wonder if he truly is the crow who has been calling out to Bran in dreams. Today we get to the bottom of this mystery. I set out to try answer the question for myself and I think I have found enough evidence in book and out of book to say definitively what the answer is. Let me know if you agree.