(1) That any real property that they owned or claimed to own, or in which they had or claim to have had any interest, and any real property that they hereafter may own or claim to own or in which they hereafter shall have or claim any interest has been assessed and hereafter will be assessed each year;
(2) That the tax levied against such real property became and hereafter will become due and delinquent at a fixed time;
(3) That the tax became and was and hereafter will become and be a lien upon such real property;
(4) That if such tax was not paid or hereafter shall not be paid within the time fixed by law, the lien has been or hereafter will be enforced by foreclosure proceedings at the time and in the manner provided by law;
(5) That since the enactment of chapter 408, General Laws of Oregon 1919, and following its effective date (May 29, 1919), such foreclosure proceedings have been and hereafter will be proceedings in rem; and
(6) That by reason of their delinquency in the matter of the payment of their taxes, there has been impressed upon and there hereafter shall be impressed upon them a continuing duty to investigate and ascertain whether or not such real property has been or hereafter shall become included in tax foreclosure proceedings, regardless of any defects, jurisdictional or otherwise, that may have appeared or hereafter shall appear in such foreclosure proceedings. [Formerly part of 312.220; 2005 c.94 §69]