Scenes Collection Project-senprohash.png
I found an interesting description on the analysis site in Japan.
It is about how to generate a hash of Sengoku privince.
Looking at internal data, it seems that it consists of stringkey, param1, param2
param1 = file name
stringkey = be8x13dksaoo124faa
loc_3 = timestamp
I could understand until that, but only param 2 is unknown
If you can identify something this param 2 you can definitely extract images from this game
If you want to investigate, you should be able to find clues by analyzing "senpro.swf" from game cache file