I stand corrected then... although accuracy of translating/calculating the specific track info Bartman mentioned into such disc ID still could be a tad iffy near as I can tell -- I can easily see the (deduced) starting times checksum and/or aggregate disc length could easily be off by a bit from...
That's probably impossible near as I can tell.
How would such an app do that w/out being able to id each album (and then look up the data) accurately... unless your ripping software retained some such id info (like UPC code), which I'm not aware any do?
_Man_