This could be super useful for deduplicating large photo datasets!

It might be worth changing this link to the github, there’s a lot more info on the hash there.

Came here to say the same thing :-) Anyone know of a free(ish) software based on a very fast hashing algorith for checking large number of images? My intention is to check for bit-rot and other unforeseen data corruptions between backup disks, I assume many others must have a similar use case.