Wash. Rev. Code § 11.140.180
(1) If a transaction, including a declaration with respect to or a transfer of specific property, otherwise satisfies applicable law, the criteria of RCW 11.140.020 are satisfied by:
(2) Customary methods of transferring or evidencing ownership of property may be used to create a custodial trust, including any of the following:
(i) Issuance of a certificate of title by an agency of a state or of the United States which evidences title to tangible personal property:
[ 2025 c 111 s 18.]