@rafl From what I've seen, there's not one currently, but it's something they're trying to figure out how to fit into the protocol, so it's not an outright impossibility. It'll be required if we want a system where folks don't disappear because other people got sick of the money and effort required to be a sysadmin.
@r4v5 I am. Thank you!
@rafl if you're the kind of person who cares about GitHub issues: https://github.com/tootsuite/mastodon/issues/177