K.S.A. 16-111: Medium of payment.

That from and after the passage of this act, all obligations of debt, judgments, or executions, stated in terms of dollars, and to be paid in money, if not dischargeable in United States legal-tender notes, shall be payable in either the standard silver or gold coins authorized by the congress of the United States, all stipulations in the contract to the contrary notwithstanding.