Section 1414.
Cal. Evidence Code - EVID § 1414.
in effectA writing may be authenticated by evidence that:
(a)
The party against whom it is offered has at any time admitted its authenticity; or
(b)
The writing has been acted upon as authentic by the party against whom it is offered.
Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026