OK,
is the link to the image straight from the USB microscope. It's as good as I can get it (yeah, it's a crappy microscope). I need to keep the camera/microscope at an angle, otherwise it's totally invisible.
It looks like a DataMatrix code, so I tried a perfectly legible DataMatrix serial number sticker that I know a Zebra Symbol scanner has absolutely no problems scanning, but the decoder just says "error decoding QR Code" on that one too. Another online scanner does recognize that code, but still not the one on the IC.
Edit: I tweaked the image a little more, put it through
this online decoder and it's indeed a DataMatrix code, it says this: 2730907261P01
No hits on google, so back to square one.