Kan. Stat. § 10-112
All municipal bonds shall, unless otherwise approved by the attorney general, be composed in type and printed. Such bonds shall constitute a general obligation of the municipality issuing the same and shall recite the authority under which they are issued and that they are issued in conformity with the provisions, restrictions and limitations thereof and that such bonds and the interest thereon are to be paid by such municipality, and such recital when said bonds have been duly registered as herein provided, shall import absolute verity and shall be conclusive in favor of all persons purchasing said bonds, that all proceedings and conditions precedent have been had and performed to authorize the issuance of such bonds and such bonds shall be negotiable.
K.S.A. 10-112