Haw. Rev. Stat. § 531-20: Banks, fiduciaries to disclose property of decedents, when; penalty.

Every banking house, fiduciary company, agent, or trustee, as soon as practicable after the receipt of a written statement, verified by the oath of the person making the same, showing: the death of a person for whom such fiduciary holds property; that the person making the statement is a kinsman of the deceased, together with the relationship which existed; and that the person claims to be an heir of the deceased; shall disclose to the person making the statement the nature and kind of property so held.

Any fiduciary company, agent, or trustee, refusing so to disclose the nature and kind of property so held, shall be fined not more than $500.