Wash. Rev. Code § 11.12.450
(1) An electronic will may be simultaneously executed, attested, and made self-proving if:
(2) The affidavits under subsection (1)(a) of this section must state such facts as the attesting witnesses would be required to testify to in court to prove such electronic will, and must be:
(3)
[ 2021 c 140 s 1006.]
Effective date—2021 c 140 ss 1001-1016: See note following RCW 11.12.400.