Historical clue formulations

• Not real — 2026-04-05
• Produced by A.I., say, as photos — 2025-06-24
• Like the death of 19-Across, some claim — 2023-02-05
• Staged, as a disappearance — 2022-03-29
• Staged — 2022-02-05
• Tricked by doing something unexpectedly, with "out" — 2020-11-16
• Like the moon landing, according to conspiracists — 2018-04-30
• Like some U.F.O. sightings — 2010-10-12
• Not real — 2009-12-01
• Counterfeited — 2006-02-26
• Like Hitler's "diaries" — 1997-01-12