Update: My guess is that they haven't released enough code to run a Bluesky of your own, because all the answers from people who say they know say the same thing -- "It doesn't work that way." You could write your own, but if we were to do that, why use their one-off API, use a standard instead, and we might have a chance to interop with other systems in a meaningful way. I don't blame them for wanting to cash out, but I do blame them for conning people into believing it's some kind of escape. Until I hear otherwise Bluesky is a dead-end, not worth investing your hope in. If you're migrating from Twitter this is no better. Keep looking. But I promise to let you know if I get any info that changes my opinion, so if I've got it wrong, people from Bluesky, just answer the freaking question in the post at the top of this page. Thanks.