A transaction verification system and method may include receiving an interaction record describing communications between parties regarding a transaction event. The interaction record may include interactions having multiple communication formats. Transaction data describing transaction parameters input into a trading system during the transaction even may be compared to the interaction record. A matching score may be calculated that indicates a level of similarity between the interaction record and the transaction data. The matching score may be calculated for multiple of transaction events in an interaction log, and an interaction log score may be calculated.