(1) A person's written statement, declaration, verification, certificate, or oath may be authenticated by a written statement which is executed in substantially the following form:

(2) Documents or records may be authenticated by a certification, as provided in subsection (1) of this section, from the custodian of the records or other qualified person that the documents or records are what they purport to be.

(3) Signature of any attorney must be accompanied by and authenticated by that attorney's Washington State Bar Association number.

(4) Documents prepared and submitted by a party who is not represented by an attorney must be signed and dated by that party and must include that party's current address.

(5) Signature by a party or an attorney on a document shall constitute a certificate by the party or attorney that he or she has read the document, believes there are grounds to support it, and has not submitted the document for the purpose of delay, harassment, or needless increase in the cost of a proceeding.

(6) Compliance with certification requirements of subsections (1) and (2) of this section creates a rebuttable presumption that a document is authentic.