An alias that appeared in the description of RIGfunctionobservationTEST028.mp4. It is currently unknown who this alias really belongs to, but it could be related to the “backtone” videos (see backtone.extend 5_f”5.5” and BACKTONE-COMPLETED{KPJV, ETSN, YMUK, WWEV}), which are in turn related to Travis (since the prj_Home.exe file was his creation before he died). However, it could also be whoever the elusive “He” figure is judging by the hidden audio clues of HIS PERCEPTION.

Leonardo DaVinci

“D4V1NC1” is clearly a rewrite of “da Vinci”, referencing the renaissance scientist Leonardo da Vinci. This follows the trope of characters with aliases of famous scientists, like Kepler for instance. Da Vinci has also appeared in the video backtone.extend 5_f”5.5”:

The image of DaVinci fills the screen for a couple of seconds, before the camera pans away to more red room. The text “QUANDO NATUS EST” appears along with a heavily distorted voice reading it aloud. The phrase is classical Latin and means “When was he born”, likely referring to Leonardo DaVinci, who was born 15 April 1452.

DaVinci engraving by Raffaello Sanzio Morghen
Original image that is the closest thing to the one featured in the video