California Code, Civil Code - CIV § 8044

(a)(1) For the purposes of Title 2 (commencing with Section 8160), “stop payment notice” means the notice given by a claimant under Chapter 5 (commencing with Section 8500) of Title 2.

(2) A stop payment notice given under Title 2 (commencing with Section 8160) may be bonded or unbonded.  A “bonded stop payment notice” is a notice given with a bond under Section 8532.  An “unbonded stop payment notice” is a notice not given with a bond under Section 8532.

(3) Except to the extent Title 2 (commencing with Section 8160) distinguishes between a bonded and an unbonded stop payment notice, a reference in that title to a stop payment notice includes both a bonded and an unbonded notice.