Is there a difference between swearing verbally such as the oath that is required in court, or signing a sworn statement?
Are you asking about halacha or secular law?
To a court or to to a private party?
Probably not. except for the degree to which you may be able to explain the written/oral statemnet in a way that does not render it untrue.
*** I am not an attorney and am not in any way offering legal advice. You should consult a licensed attorney before taking any action with respect to this matter. (Kinda like ask your LOR before acting on any halachic info you get in the CR) ***
.. or clicking on the bottom of a million page web-screen “I have read all the above (sure) and agree…
I am referring to Halacha.
Who is signing it? if its only himself then its not the same but if a different beis din signed that they heard a testimony then that is the same as an oath.
Ooh this is touchy asking wether written swearing is permitted
4answer see brisk v other yeshivas thread
There is no such thing in Choshen Mishpat as a written sworn statement.