self-authenticating

adjective

self-au·​then·​ti·​cat·​ing ˌself-ə-ˈthen-ti-ˌkā-tiŋ 

-ȯ-ˈthen-

: serving to prove oneself to be real, true, or genuine : not requiring extrinsic proof of one's authenticity

The last page of the exhibit contains the raised seal of the Philadelphia Court of Common Pleas and the signature of the prothonotary. Thus the document is self-authenticating.

—Crossley v. Lieberman, 868 F.2d 566 (1989)

self-authenticating evidence

Word History

First Known Use

1834, in the meaning defined above