DCI offers a way to track where your data comes from, giving you an audit trail...

https://tango-wiki.win/index.php/How_to_Write_a_Due_Diligence_Memo_That_Shows_Disagreements_on_Purpose

DCI offers a way to track where your data comes from, giving you an audit trail you can actually trust. It’s designed to clear up the usual confusion around data origins, but like any tool, it’s only as good as the info you feed it