Another one of my crazy posts - this one's strictly for media "freaks".
I've decided to scan the BCAs of my collection of Blu-Ray discs, so you can see what the BCAs look like and can probably use this information to identify blanks just by looking at them with your naked eye.
Nice! BTW, where did you get those Prodisc BD-Rs?
Ah, well the Prodiscs came from eBay - http://www.ebay.com.au/itm/150978936545?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
I haven't had enough long term experience to say how well they hold up, but the code and my burners all say it's a 4x "grade" disc, the seller likes to hype up the 10x as certain burners may overspeed. They're definitely cheap :).
Well that's a whole new way of scanning discs!