You're trying to find proof that the original cuts really do still exist somewhere in LFL's basement. The proof has been there since 2004.

Empire of Dreams.

All the shots of ANH in the sequence where they're talking about the initial release are of the original 1977 print. How do I know? Simple.

It doesn't say "Episode IV A New Hope" on top of the crawl.

That's the first and most obvious. I think they even have a shot of Han shooting first in there and I'm pretty sure it ends with the DS blowing up with NO shockwave ring.

We don't need to figure out IF the original cuts still exist. THEY DO. What we need to focus on is getting Lucas to admit it.