Velocity Rules & Structuring Detection: A Developer's Guide

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The text discusses the implementation of velocity rules for transaction monitoring to detect financial structuring and mule activity. It highlights the importance of evaluating transactions over time rather than individually, using a system that maintains rolling windows per user to count, sum, and de-duplicate counterparties. Didit's Transaction Monitoring API provides this capability by allowing users to define a window, choose an aggregation method (count, sum, or distinct), and set a threshold to trigger alerts, all without needing a separate streaming processor. The API is priced at $0.02 per transaction, with separate AML screening costs. Velocity rules are essential for identifying patterns such as structuring, which involves splitting large sums into smaller payments to avoid detection, and mule networks, characterized by funds rapidly moving in and out from multiple sources. The text provides examples of how these rules can be applied across various industries, including fintech, crypto, lending, marketplaces, and iGaming, and explains how to integrate and tune these systems using Didit's platform.

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