US Patent 11336430 Blockchain-incorporating distributed authentication system

Disclosed herein are system, method, and device embodiments for an authentication workflow incorporating blockchain technology. An embodiment operates by requesting, from a distributed authentication service, transmission of a time-based one-time password to a communication endpoint associated with an end-user, receiving a time-based one-time password submission from a user device associated with the end-user, retrieving a plurality of distributed ledger entries (e.g., a plurality of blocks of a blockchain), and validating the time-based one-time password submission based on the plurality of distributed ledger entries as a part of a two factor authentication workflow.