Phantom time hypothesis

From Wikipedia.

The phantom time hypothesis is a historical conspiracy theory asserted by Heribert Illig. First published in 1991, it hypothesizes a conspiracy by the Holy Roman Emperor Otto III, Pope Sylvester II, and possibly the Byzantine Emperor Constantine VII,^[to fabricate the Anno Domini dating system retroactively, in order to place them at the special year of AD 1000, and to rewrite history^[1] to legitimize Otto's claim to the Holy Roman Empire. Illig believed that this was achieved through the alteration, misrepresentation and forgery of documentary and physical evidence.^[2] According to this scenario, the entire Carolingian period, including the figure of Charlemagne, is a fabrication, with a "phantom time" of 297 years (AD 614–911) added to the Early Middle Ages.

Evidence contradicts the hypothesis and it failed to gain the support of historians.