Governments have "Chainalysis" tools to follow Bitcoin transactions. Let's build an open-source tool for everybody to have a "Chainalysis" tool!
Bitcoin Flow is a visual graph-based UI for Bitcoin Transactions - where each node represents a transaction with input/output edges connected to other transactions. You can enter a specific txids, addresses and xpubs to see their transactions, label them, etc.
I'll be happy to get help integrating this project on personal nodes, and extending the tool to be able to build/display chains of PSBTs.