>>/33239/
FYI, Endchan/Lynxchan filenames contain MD5 hash of original file before processing, not of the one you download, unless there's nothing to strip in it - sometimes file remains unchanged. Therefore, if you want to search any of these on 4chan archives, convert HEX string to binary, then binary to Base64URL.
lynxchan-md5(){
for FILE in "$@"; do
	NAME="$(basename "$FILE")"
	HEX_MD5="${NAME:0:32}"
	BASE64_MD5="$(echo "${HEX_MD5^^}"|basenc -d --base16 -|basenc -w0 --base64url|tr -d "=")"
	echo "BASE64_MD5/"">https://desuarchive.org/_/search/imageBASE64_MD5/"
done
}
Example:  >>/33423/
$ lynxchan-md5 '85c553d3c03e083ca57574a3aea9a79b-imagejpeg.jpg'
>  ">https://desuarchive.org/_/search/image/hcVT08A-CDyldXSjrqmnmw/

While performing md5sum on the file gives the following:
ca9932fae4424f63c75f6529de1200b1
">https://desuarchive.org/_/search/image/ypky-uRCT2PHX2Up3hIAsQ/
Completely different result, unsearchable. Also that image seems to be downloaded from imgur at some point according to oldest filenames, which has yet another hash, and is 1.4KB lesser in size.
https://i.imgur.com/bxP2akf.jpg
https://i.imgur.com/ZxD7nZ4.jpg
https://i.imgur.com/jUPawAf.jpg