Boss: The chain reader

What you get asked

1. Boss fight! First principle of this whole league: what makes on-chain analysis possible at all?

   No permission, no expiry, no gatekeeper. Every skill in this league stands on that one radical property.

2. Match each clue to its meaning, no notes allowed

   Four clues, four instant reads: the reflexes of a chain reader.

3. You spot an approval for 115792089… (an effectively infinite amount) to an unverified contract. What's the right move?

   Unlimited allowance plus unreadable code is the drainer's favourite combo. A cheap revoke transaction closes the door.

4. A stranger's 'guaranteed 10x' token is pitched to you. Order your on-chain due diligence

   This exact routine would have flagged Squid Game's sell-block and AnubisDAO's exit path before launch. Ten minutes of reading beats months of regret.

5. An exchange's proof-of-reserves snapshot shows its assets but not its ___, so it can't prove solvency alone.

   Assets minus liabilities is the whole game, and only one side of it is on-chain. Precision about what evidence shows is what makes you trustworthy.

6. Final question. A headline screams 'Whale dumps, panic!' What does a chain reader do?

   Maybe it was a sale, or a transfer to cold storage wearing a scary headline. You read the chain now; nobody gets to panic you with a story you can check yourself. League 1 cleared, chain reader. 🐜

The rest of this unit

Trace a trade, autopsy a rug pull, stress-test a claim. Detective work begins.

• Trace a swap end-to-end
• Anatomy of a rug pull
• Verifying claims on-chain
• Your investigation toolkit