shriya345/vasp-investigator ? reverse-engineered prompt

Build me a local crypto investigation app called Tracepoint that helps me follow fund flows and see which service endpoints look like likely VASP candidates based on evidence, not wallet ownership. I want a clean dashboard where I can open a demo investigation, explore a graph of addresses and entities, filter by depth, value, date, and entity type, and click through to see the evidence behind each node and edge. It should show risk signals, candidate paths, and a transparent score for each candidate, plus let me save cases, download a markdown report, and export the underlying evidence as JSON.

Please include a backend API that validates imported evidence, keeps tracing conservative, handles the demo Ethereum and BNB scenario without needing any keys, and stores cases locally. Make it runnable with a simple local setup, and support SQLite by default with PostgreSQL through a database URL if needed. If anything is unclear, look up current docs online first.