Affidavits explaining any defect in the chain of title to any real estate may be recorded as instruments affecting the same, but no one except the owner in possession of such real estate shall have the right to file such affidavit. Such affidavit or the record thereof, including all such affidavits now of record, shall raise a presumption from the date of recording that the purported facts stated therein are true; after the lapse of three years from the date of such recording, such presumption shall be conclusive.
Iowa Code § 558.8