It potentially can help verifying that a recorded message/digital data originates from you (or any other person). It can’t help with the misinformation in the data itself. See also: https://lemm.ee/post/23366395

Apparently unrelenting DDOS attack, possibly because they defederated from some instances.

That’s the Woof Woof Secret Brigade. That emblem is just there to make you underestimate them. They are probably in fierce competition with the Kitty Kitty Secret Brigade.