If you like, I can ignore the 100% confirmed PM evidence I have from CD and here and instead go about showing clues in the rap battle that Sparrow had against type1 referring to thigns about Type1 that only Type1 and myself know about him as well as speech pattern similarities.
I've noticed that people with alt accounts are likely to accept their own debates, but then not commit and it's a mostly forfeited thing. Sparrow and Type1 have several debates against each other that all fit the above criterion.
The only problem is Type1 keeps getting banned, so I don't know how many are forfeit fests because of that. I would like to put that as mild evidence in support of the two being alts.