Baker, if you use anonbin you don't need to sign up. Just make a new paste saying 'first paste' or anything, put a name/number/anything in the name field and a password - and save.
That's you got your own anonbin you can use to verify it's you (include the handoff request post in a new paste of yours and pass it to the baker), and pass the dough along.
Use your name / pass each time, and everyone will know you're not a 'fly-by dough changer'
http://www2.qanonbin.com/