I wouldnt trust them, theres so many better ways to prove it than that.
And at that to, the large majority of servers just want a nice apology or proof in a video of sorts to prove.
Or in the case of the largest, The Hypixel Network, Its solid proof, or a continued ban.
This is not common practaice, though im not saying there doing it with bad intentions. But I wouldn't trust it.
Quick question too, what server was this?