Okla. Stat. tit. 12, § 2903
The testimony of a subscribing witness is not necessary to authenticate a record unless required by the laws of the jurisdiction governing the validity of the record.
Laws 1978, SB 276, c. 285, § 903, eff. October 1, 1978; Amended by Laws 2002, HB 1939, c. 468, § 64, eff. November 1, 2002 (superseded document available).