Virtual payment processing system

An apparatus for resolving asynchronously received data transaction request messages in a data transaction processing system in which data items are transacted by a hardware processor that identifies counter electronic transaction requests received at different times from different client computers over a data communication network and transmits electronic data transaction results messages to the client computers, the apparatus comprising:

• at least one processor;
• and
• at least one memory including computer program code for one or more programs;
• the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to:
• receive an incoming data transaction request from a first client device via the data communications network, the incoming data transaction request containing data indicative of a first data transaction counter to a second data transaction previously received from a second client device and stored in a memory coupled with the hardware matching processor, wherein the incoming data transaction request does not contain identifying information associated with an entity associated with the second client device and the second data transaction does not contain identifying information associated with an entity associated with the first client device;
• determine, based on the receiving, that the first data transaction is counter to the second data transaction;
• resolve, at least partially, the incoming data transaction request and the second data transaction request, and storing any unresolved remainder of the first data transaction request or the second data transaction request in the memory;
• generate a data transaction result message comprising data indicative of the resolution;
• and
• transmit the generated data transaction result message to at least to the first client device via the data communications network.

A non-transitory computer readable medium including instructions for resolving a data transaction request with a counter data transaction request received asynchronously in time, that when executed by a processor, are operable to cause the processor to:

• receive an incoming data transaction request from a first client device via the data communications network, the incoming data transaction request containing data indicative of a first data transaction counter to a second data transaction previously received from a second client device and stored in a memory coupled with the hardware matching processor, wherein the incoming data transaction request does not contain identifying information associated with an entity associated with the second client device and the second data transaction does not contain identifying information associated with an entity associated with the first client device;
• determine, based on the receiving, that the first data transaction is counter to the second data transaction;
• resolve, at least partially, the incoming data transaction request and the second data transaction request, and storing any unresolved remainder of the first data transaction request or the second data transaction request in the memory;
• generate a data transaction result message comprising data indicative of the resolution;
• and
• transmit the generated data transaction result message to at least to the first client device via the data communications network.