Cal. Prob. Code § 3912
(a) A custodian shall do all of the following:
(b) In dealing with custodial property, a custodian shall observe the standard of care that would be observed by a prudent person dealing with property of another and is not limited by any other statute restricting investments by fiduciaries except that:
(d) A custodian at all times shall keep custodial property separate and distinct from all other property in a manner sufficient to identify it clearly as custodial property of the minor. Custodial property consisting of an undivided interest is so identified if the minor’s interest is held as a tenant in common and is fixed. Custodial property subject to recordation is so identified if it is recorded, and custodial property subject to registration is so identified if it is either registered, or held in an account designated, in the name of the custodian, followed in substance by the words:
| “as a custodian for (Name of Minor) |
under the California Uniform Transfers to Minors Act.”