A watchlisting module is configured to securely and efficiently create, modify, manage, and store a watchlist. The watchlisting module is configured to generate a watchlist consisting of watchlist entries. Each watchlist entry encapsulates information about an entity to be associated with the watchlist. The watchlist entry includes information about the entity including a unique identifier for the watchlist, a unique identifier of the watchlist entry, a unique identifier for the entity, and access control information for membership process related to the watchlist. The watchlist entry also includes a State Lock. Watchlisting module is configured to utilize the State Lock to secure and verify a watchlist entry.