About
The worker-owners of Proof Bakery Cooperative 2026 Our Story Proof Bakery opened in 2010 by chef/owner Na Young Ma in Atwater Village, in a space that housed a bakery for almost as long as most locals can remember. The Rollin’ Pin was the very first bakery in this space and it opened in the early 1960s. In 2021, Proof Bakery entered into a new era: It is now a worker cooperative owned and managed by the working employees of the bakery.