Okla. Stat. tit. 43, § 43-551-104
Application to Indian tribes
APPLICATION TO INDIAN TRIBES.
A. A child custody proceeding that pertains to an Indian child
as defined in the Oklahoma Indian Child Welfare Act, is not subject
to this act to the extent that it is governed by the Oklahoma Indian
Child Welfare Act.
B. A court of this state shall treat a tribe as if it were a
state of the United States for purposes of applying Articles 1 and 2
of this act.
C. A child custody determination made by a tribe under factual
circumstances in substantial conformity with the jurisdictional
standards of this act must be recognized and enforced under Article
3 of this act.