I don't know if you have to agree to hold a press conference in CA, but your information is a matter of public record and will be disseminated widely by the news media should you win a big prize.
"As a state agency, the California Lottery is subject to public disclosure laws that allow access to certain governmental records. Your name, the name and location of the retailer who sold the winning ticket, the date you won, and amount of your winnings, including your gross and net annual payments, are matters of public record and subject to disclosure. The Lottery may release additional information if required by legal process or upon your request."