>>1286183
>>1286548
>>1286676
>>1286798
Was digging into this a bit. the majority of the "hex" filenames appear to be GUID's Globally Unique Identifiers.
https://betterexplained.com/articles/the-quick-guide-to-guids/
That said, do these GUID's correspond to other identifiable items? The GUIDs could be generated by the source to prove validity/originality or be used to "match" to some other GIUD giving more information?
metadata proves the source is true.
a quick search upon the image metadata values shows there are other discussions on this topic, i havent had time to research them yet...