Abstract: A system and method are disclosed for providing a plurality of payment services to facilitate electronic commerce. In one embodiment, services are provided within the context of a four-corner trust model comprising a buyer and a seller that engage in an on-line transaction. The buyer is a customer of a first financial institution. The first financial institution acts as a certificate authority for the buyer and issues the seller a hardware token including a private key and a digital certificate signed by the first financial institution. The seller is a customer of a second financial institution. The buyer uses its private key to sign payment instructions that are forwarded to the first or second financial institution for execution. The message may be forwarded to the first financial institution indirectly via the seller and the second financial institution.

Abstract: A system to manage a supply chain may include a purchase order management module operable on a processor to electronically receive purchase order information from a buyer and to store and track information associated with each purchase order. The system may also include an invoice and trade document management module to electronically store, aggregate and manage invoices and trade documents related to each purchase order and information required for presentment and reconciliation of each purchase order.