how so? again, i'm pretty new into researching this for physical works - but i would assume with the provenance/etc that goes into cataloging a piece, it should be...well, at least better than what we currently have.
How are you going to map a digital signature to in-depth verification of a physical painting? There are basically no possibilities here that aren't full of holes, because the real world doesn't come in discrete byte values.
i see them as a chain of custody that accentuates an already broken system of 'in-depth verification' as you put it. but again, i'm only recently looking into the validity of using such a thing. more accountability should be good, overall.
You still have to trust that nobody in the chain of custody has swapped out the physical work with a forgery.
sure, but it's an extra layer over what is currently in place.