What is the "blockota" file in MIUI?

Some Xiaomi device owners have noticed that after updating their smartphones, a mysterious file called "miui-blockota.zip" appears in the download folder. On the official MIUI forum, there are many

Recent Comments

Neil
Same process works for Note 8. There is also (at least on the Note 8) a custom text whereby one could add one's own watermark - I can see uses for that.
Julie
Sage Tech Wiz - you are a genius. Thank you.
dawg
I've to delete em lemme know A$AP
Tanish kumar
I have vivo v7+ i have connection problem or invalid mmi code please help me how to check
Ivan
I can't enter my new credit card number without this OR-IEH-01 error appearing. Any advice on that?