A self-authenticating name is one that can be verified without needing a signature. For example, the Tor name dnb2uorai4dcnjm5.onion can easily be verified that it corresponds to a given Tor public key because it can be computed directly from the key (it is a base32 encoding of the SHA-1 hash of the key).

In Samizdat, self-authenticating names are given to GnuPG keys based on the self-authenticating Tor name. For example, a GnuPG identity with a cross-certified subkey equal to the Tor key corresponding to dnb2uorai4dcnjm5.onion can use the identity: Anonymous <root@dnb2uorai4dcnjm5.onion>.