silverpill@dmitri @helge @evan It already achieved it, albeit on a small scale.
The very possibility of it is a proof that ActivityPub is a good protocol. Usually, if a major protocol feature wasn't considered at a design stage, it can't be added later in an organic way.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.