Abstract: Systems and methods configured for monitoring and analyzing financial transactions on public distributed ledgers for suspicious and/or criminal activity are disclosed. Exemplary implementations may: access public third-party information for addresses involved in financial transactions; correlate a first portion of the public third-party information with transaction addresses; label the financial transactions and/or the addresses according to characteristics, such that individual ones of the addresses either have been labeled or are unlabeled; cluster the financial transactions and/or the addresses into a set of clusters that includes a first cluster; assign levels of risk for suspicious and/or criminal activity to the addresses and the financial transactions; and responsive to comparisons of levels of risk with a threshold, report transactions for suspicious and/or criminal activity.