Eran Sandler:
Nice. Perhaps nusenu can add that to the spec. The current spec has gpg support and keybase user, but perhaps there is a case for specifying the gpg server as well (like in Marco's case).
Usually the key fingerprint is enough to find a key if it was uploaded to any major keyserver.
I'm not sure about adding a keyserver field to the spec, instead of a keyserver field I would use a keyuri that points to the public key file on a https server directly.