(a) The official record of a writing is prima facie evidence of the existence and content of the original recorded writing if:
(1) The record is in fact a record of an office of a public entity; and
(2) A statute authorized such a writing to be recorded in that office.
(b) The presumption established by this section is a presumption affecting the burden of producing evidence.
(Enacted by Stats. 1965, Ch. 299.)