This episode takes place in 3100s, when an AI program called The Doctor (played by Robert Picardo) is re-activated by aliens.
In the actual course of events, Captain Janeway had agreed to provide the Vaskans with medical supplies in exchange for dilithium crystals.
Initially, the Doctor's claims that Voyager was unfairly depicted by the Kyrians are ignored, and he is told he could be held accountable for war crimes when he presents his story to the Commission of Arbiters.
The Doctor states, however, that a presently non-functional Starfleet medical tricorder would settle the issue of who killed Tedran.
After fending off an angry mob of Vaskans intent on destroying what they now know to be a museum of false history, the Doctor initially wishes to abandon his quest to set the record straight and says that the truth may cause more harm and violence.
Following the peace, the Doctor served as the surgical chancellor for the Kyrians and Vaskans for many years, but eventually he took a ship and departed for Earth, saying that "he had a longing for home".
[3] Digital Trends gave "Living Witness" an honorable mention in an article highlighting the best episode from each Star Trek series.