(1) the term Comptroller means the Comptroller of the Currency;

(2) the term unclaimed property means any articles, items, assets, other property, or the proceeds thereof from safe deposit boxes or other safekeeping arrangements with closed national banks, which are in the possession, custody, or control of the Comptroller in its capacity as successor to receivers of those banks; and

(3) the term claimant means any person or entity, including a State under applicable statutory law, asserting a demonstrable legal interest in title to, or custody or possession of, unclaimed property.