Penal Code § 134
CHAPTER 6. Falsifying Evidence, and Bribing, Influencing, Intimidating or Threatening Witnesses
Every person guilty of preparing any false or ante-dated book, paper, record, instrument in writing, or other matter or thing, with intent to produce it, or allow it to be produced for any fraudulent or deceitful purpose, as genuine or true, upon any trial, proceeding, or inquiry whatever, authorized by law, is guilty of felony.