Ariz. Rev. Stat. § 14-13115
A. The legal duties imposed on a fiduciary charged with managing tangible property apply to the management of digital assets, including all of the following, if applicable:
B. A fiduciary's or designated recipient's authority with respect to a digital asset of a user:
E. A fiduciary with authority over the tangible, personal property of a decedent, protected person, principal or settlor:
G. A fiduciary of a user may request a custodian to terminate the user's account. A request for termination must be in writing, in either physical or electronic form, and accompanied by all of the following:
3. If requested by the custodian any of the following: