== D. Backpack ==
Backpack is an authorized data storage plus a management interface for
Earners; Each Earner will have their own Backpack that holds all of their badges and gives them an interface to manage, control and share their badges.
* The Backpack as well as the entire system is open source and federated. Earners or Issuers can take the [https://github.com/mozilla/openbadges code] and fork it.
* Earners may decide to create and host their own Backpack so that they have complete control over their badges.
is building a reference or default Backpack which will hold all of the badge Assertions (hashed user email + badge data) for each Earner
== E. Metadata Spec ==