CA Evid Code Section 1532

(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.