You're missing the fact that it uses perceptual hashing, not cryptographic hashing. Minor changes to an image result in a similar or identical perceptual hash.

You're missing the fact that it uses perceptual hashing, not cryptographic hashing. Minor changes to an image result in a similar or identical perceptual hash. Here's an article and a big discussion about it from the other day: https://news.ycombinator.com/item?id=28091750 https://news.ycombinator.com/item?id=28091750