Abstract: Example embodiments relate to centralized transaction verification. In example embodiments, a system may maintain a set of tracked attributes and a set of conditions, each condition to provide an indication of whether generally a transaction should be allowed based on at least one of the tracked attributes and an associated value. The system may receive transaction data packets from multiple heterogeneous transaction placement systems, each transaction data packet to relate to a particular transaction and to include any number attributes of any type and any formatting. The system may normalize each of the transaction data packets. The system may verify each of the transaction data packets by analyzing a subset of conditions where the conditions in the subset are related to the attributes associated with the particular transaction data packet.