While a WRKChain can be a simple or complex implementation of a blockchain, sometimes an entity will just only need to add a layer of immutable trust to their already existing (or soon to be developed) database.
This works through the BEACON SDK which tracks and timestamps all changes made to your databases and converts this into a shortened HASH (often times under 100 characters) which is a encrypted/condensed marker of your data.
This HASH is then submitted to the UND Mainchain and immutability recorded. (while still maintaining the privacy of your data) The net effect of Beacon is that if someone goes into the database and changes records without transparency/authorization, it will no longer match the records of HASHES on Mainchain and and an alert will be sounded.
Application of BEACON is lightweight and inexpensive to implement and useful for any application where data integrity is paramount.