We'll see whether you release portability before Mastodon. Right now, bsky.social seems to be the only place anyone can get an account, subject to your verifica

We'll see whether you release portability before Mastodon. Right now, bsky.social seems to be the only place anyone can get an account, subject to your verification requirements (and there are people in the comments here that can't sign up), so you're multiple steps away from porting anything.