Every person who offers for probate any instrument which establishes a testamentary trust of property for charitable purposes or who records in any county or city and county any inter vivos transfer of property for charitable purposes shall furnish a copy of such document to the Attorney General. The custodian of the records of a court having jurisdiction of probate matters or of charitable trusts shall furnish such copies of papers, records and files of his office relating to the subject of this article as the Attorney General requires.