California Code, Penal Code - PEN § 186.31

At the time of sentencing in adult court, or at the time of the dispositional hearing in the juvenile court, the court shall inform any person subject to Section 186.30 of his or her duty to register pursuant to that section. This advisement shall be noted in the court minute order. The court clerk shall send a copy of the minute order to the law enforcement agency with jurisdiction for the last known address of the person subject to registration under Section 186.30. The parole officer or the probation officer assigned to that person shall verify that he or she has complied with the registration requirements of Section 186.30.