.. _vc-extensibility: Extensibility ============= Both :ref:`data models ` and :ref:`storages ` may be implemented as installable pluggable applications for the Credentials IDA. .. _vc-storages: Storages -------- Storage backend classes describe a destination for issued verifiable credentials. Storages represent wallet integrations (mobile or web applications). See available options on the :ref:`Storages page `. .. note:: For a storage plugin example, see the `openedx-wallet`_ dummy internal storage (by `Raccoon Gang`_). .. _vc-data-models: Data Models ----------- Data model classes are `DRF`_ serializers that compose verifiable credentials according to different specifications. Credentials data models ~~~~~~~~~~~~~~~~~~~~~~~ There are 3 specifications included by default: - `Open Badges Specification v3.0`_ (see `OB3.0 model`_) - `Open Badges Specification v3.0.1`_ (see `OB3.0.1 model`_) - `Verifiable Credentials Data Model v1.1`_ (see `VC1.1 model`_) - experimental Additional specifications may be implemented as separate plugins. Credentials status information ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ :ref:`Status List v2021 ` is a special kind of verifiable credential. It serves as a verification mechanism for issued verifiable credentials (meaning, it does not carry achievement information itself but acts as a registry of statuses for all created achievement-related verifiable credentials). Status information allows instant checks to determine whether a presented verifiable credential is still valid. The credential issuer can invalidate a verifiable credential by updating its indexed record in the status list. See full specification in the `Verifiable Credential Status List v2021`_ community report. .. _Verifiable Credentials Data Model v1.1: https://www.w3.org/TR/vc-data-model-1.1/ .. _Open Badges Specification v3.0: https://1edtech.github.io/openbadges-specification/ob_v3p0.html .. _Open Badges Specification v3.0.1: https://www.imsglobal.org/spec/ob/v3p0/impl/ .. _Verifiable Credential Status List v2021: https://www.w3.org/community/reports/credentials/CG-FINAL-vc-status-list-2021-20230102/ .. _Raccoon Gang: https://raccoongang.com .. _Learner Credential Wallet: https://lcw.app .. _DRF: https://www.django-rest-framework.org/ .. _VC1.1 model: https://github.com/openedx/credentials/blob/master/credentials/apps/verifiable_credentials/composition/verifiable_credentials.py .. _OB3.0 model: https://github.com/openedx/credentials/blob/master/credentials/apps/verifiable_credentials/composition/open_badges.py .. _OB3.0.1 model: https://github.com/openedx/credentials/blob/master/credentials/apps/verifiable_credentials/composition/open_badges.py .. _openedx-wallet: https://github.com/raccoongang/openedx-wallet