Tim,
The problem is when you mix "sonic transparency" and digital identical" in the same comment. They are completely different thinks, and although you can check for the second, the first one, as you have defined it, is implementation dependent - you will never be able to prove it!
Said in another way - the software that compares the files knows that they are bit for bit equal, but your ears can not be used to prove it!
Actually, micro, for some of us, digitally identical, plus jitter and noise below audible thresholds and a bit of listening for confirmation are proof enough. But I realize I'll never be able to prove it to Audiophiles.
Tim