The Toronto-Dominion Bank
LEDGER UPDATE NETWORK AND METHOD OF UPDATING A LEDGER

Abstract:

A ledger update network includes a terminal and a server. The server includes or in communication with a database of ledgers each uniquely associated with an identifier. The terminal receives a primary value and one of the identifiers; generates a request message that includes the identifier and the primary value; and generates an update command by (i) selecting a rule from a database, and (ii) generating a secondary value from the selected rule. The update command includes the identifier and the secondary value. The terminal transmits the request message and the update command to the server. The server transmits to the terminal an authorization response that confirms authorization of a transaction characterized by the identifier and the primary value. Without referencing the database and without first responding to the update command, the server posts the secondary value to the ledger that is associated with the identifier.