  XRP is a modern crypto-asset (crypto-currency) developed by Ripple Labs,
which has been increasing its financial presence. We study its transaction
history available as ledger data. An analysis of its basic statistics,
correlations, and network properties are presented. Motivated by the behavior
of some nodes with histories of large transactions, we propose a new index: the
``Flow Index.'' The Flow Index is a pair of indices suitable for characterizing
transaction frequencies as a source and destination of a node. Using this Flow
Index, we study the global structure of the XRP network and construct
bow-tie/walnut structure.
