instead of using a hash to find images you should use a lower resolution version of same image to find the full resolution version.  even Bing image search has a feature where it will automatically show you different "image sizes" for the same image, for example the following are different sizes grouped by Bing

https://i.pinimg.com/originals/d0/0d/59/d00d5967e65b05124e5d277a7c6fb83e.jpg

https://i.pinimg.com/736x/0d/b9/44/0db944ce8f8e469988d35cda0eee9501.jpg

a truly smart system wouldn't even save the image but simply find the highest quality version of it on the web and save just the address.

i tag nostr:npub180cvv07tjdrrgpa0j7j7tmnyl2yr6yr7l8j4s3evf6u64th6gkwsyjh6w6 because he appears to capable of understanding my brilliant ideas.