It turns out you can simply serve a file from a domain to use it as your bsky handle.

So this guy is now S3. All of S3.

@jonty did bs just rip off the entire twitter design? That's what it looks like.
@hllizi @jonty
BlueSky began as a project at Twitter, under Jack. The BlueSky division of Twitter was given a perpetual license to Twitter's trade dress, design elements, when Jack spun it into its own lil company in the last minutes of the transfer of power between Twitter and Elon.