US Patent 11770261 Digital credentials for user device authentication

A system for credential authentication includes an interface and a processor. The interface is configured to receive a request from an application for authorization to access. Access to the application is requested by a user using a user device. The processor is configured to provide an authentication request to the user device, receive a device credential, wherein the device credential is backed by data stored in a distributed ledger, determine a user identifier and an authentication device associated with the user based at least in part on the device credential, provide a proof request to the authentication device, receive a proof response, determine that the proof response is valid, generate a token, and provide the token to the application authorizing access for the user.