OPN's directory service utilizes payment address aliases, providing an extra layer of security and helping to mitigate fraud because end users are not required to provide sensitive account information. An alias also provides end users a single receiving point for payments, with the flexibility to direct funds to other accounts as needed.

OPN is built with flexibility in mind, allowing innovation through integration and interoperability. OPN maintains an extensive open API and is interoperable with other payment systems such as ACH, wire and card networks, helping to bridge the gap between legacy systems and the future of real-time payments.

OPN's technological architecture and use of payment workflows allows data, such as messages and invoice information, to move and be associated with a payment. Important information about a payment is retained and protected, allowing only permissioned parties to view details of a payment.