Cal. COM § 1204

Except as otherwise provided in Divisions 3, 4, 5, 6, and 12, a person gives value for rights if the person acquires them: (1) in return for a binding commitment to extend credit or for the extension of immediately available credit, whether or not drawn upon and whether or not a chargeback is provided for in the event of difficulties in collection; (2) as security for, or in total or partial satisfaction of, a preexisting claim; (3) by accepting delivery under a preexisting contract for purchase; or (4) in return for any consideration sufficient to support a simple contract.