(1) A bank, savings bank, or savings association that is designated as a qualified public depository and that is not insolvent shall guarantee public depositors against loss caused by the default or insolvency of other banks, savings banks, or savings associations that are designated as qualified public depositories.
(2) A credit union that is designated as a qualified public depository and that is not insolvent shall guarantee public depositors against loss caused by the default or insolvency of other credit unions that are designated as qualified public depositories.
Each qualified public depository shall execute a form prescribed by the Chief Financial Officer for such guarantee which must be approved by the board of directors and must become an official record of the institution.