This type of data is 'old school' molecular biology.

Creating those blots is a grind. It takes hundreds of hours to set up those experiments and they often don't work, or go wrong, and you have to do it all over again. The people who are good at making these are usually the people who aren't really up to date with the whole 'computers' thing.

Yes, there would a hundred ways to easily verify the provenance of data from an image of a blot all the way to publication. However, this area of research is very slow to incorporate the latest computer tech.