Interactive videogame verification using cryptographically protected transaction records

A method, comprising:

• receiving, by a videogame server, from a first videogame client device, a first transaction record reflecting a first intermediate state associated with an interactive videogame session;
• receiving, from a second videogame client device, a second transaction record reflecting a second intermediate state associated with the interactive videogame session;
• and
• responsive to failing to successfully validate the first transaction record based on the second transaction record, terminating the interactive videogame session.

A videogame client device, comprising:

• a memory;
• and
• a processing device operatively coupled to the memory, wherein the processing device is configured to:
• store, in the memory, a first set of events associated with an interactive videogame session;
• receive, from a peer videogame client device, a transaction record reflecting a second set of events associated with the interactive videogame session;
• responsive to failing to successfully validate the transaction record based on the first set of events, notify a videogame server of a session state mismatch between the videogame client device and the peer videogame client device.