Historical clue formulations

• Swears (to) — 2025-01-13
• Swears — 2024-05-24
• Swears — 2024-02-25
• Bears witness — 2024-01-24
• Validates, with "to" — 2022-12-02
• Swears (to) — 2022-03-27
• Bears witness (to) — 2019-02-18
• Declares to be true — 2018-11-11
• Bears witness (to) — 2018-06-05
• Bears witness — 2015-09-13
• Certifies — 2011-02-18
• Bears witness — 2008-06-29
• Swears — 2003-06-29
• Certifies — 1998-12-20
• Bears witness (to) — 1998-09-14
• Certifies — 1998-05-15
• Bears witness — 1997-12-18
• Gives proof — 1995-01-29