Tmestamp when user have been blocked

Hi guys!

I need to implement automatic unblock user after 10 minutes he have been blocked using API (blocked by inputting wrong password).
To do this I need to get timestamp when user have been blocked.

Is it possible to get timestamp when user have been blocked using Api?

Also is there a way to unblock single user ip? As I see, there is only a way to clear all list blocked ips