Okla. Stat. tit. 6, § 6-910.4: Special deposit requirements

A deposit is a special deposit if it is:

1. A deposit of funds in a bank under an account agreement;

2. For the benefit of at least two (2) beneficiaries, one or

more of whom may be a depositor;

3. Denominated in a medium of exchange that is currently

authorized or adopted by a domestic or foreign government;

4. For a permissible purpose stated in the account agreement;

and

5. Subject to a contingency.