Episode 5 explores the Round Number Payment heuristic and demonstrates how to track an entity across a series of transaction on the blockchain by applying this heuristic
OXT Transaction graph:
https://oxt.me/graph/transaction/tiid/2044818214
TXID of the transaction looked at in this video:
f6c6603d57c2d7f7ccb885d5b44d7aa464806e6b3a6017e425634521803340c8