How does one verify a GPG/PGP key revocation?
How does one verify a key revocation?


As Jon Callas already stated: you simply don’t.

In case a different wording helps, here’s a quote related to the exact same question… https://lists.gnupg.org/pipermail/gnupg-users/2014-February/049100.html


  …   
  
  
    I revoked my key and on the public key server it says: "* KEY REVOKED * [not verified]" Why does it say that revocation is not verified?  
  
  
  That probably refers to the point that the keyservers don't do crypto checks. It means: There is a packet which looks like a key revocation but it could be forged. If an OpenPGP application  downloads the key from the server then it does a signature check.  
  
  …