Can search engines search by files (file hashes)?

Question

Google

Now search engines are able to search by pictures, so I wondered if search engines can search by files? maybe by file hash? Let's say I have some unknown.txt/doc/mp3 file and I would like to find sites where this file is. Or is there little profit, but such a lot of resources are needed?)

Answer 1

Looking at what files. By text (doc, pdf, txt) they have been searching for a long time and successfully. Do search engines analyze information in mp3 files? I have not seen such information (including about the hash). I know that youtube analyzes the video for plagiarism, can read the text information that is inserted into the video.
The user cannot search for mp3 files as pictures. There is no such tool. The search is mainly based on content, page and file metadata.

Answer 2

if about Mouzon, then throw Shazam - he will most likely answer you what kind of mp3.
a philistine search engine is not trained to search by hash, because the layman does not know what a hash is. and even more so, it never looks for files similar to the existing one :)
you can search by hash in dc ++ and the like, but why ??