In-class lab · 62 minutes

Session 3 — Tiny chain (in-class lab)

In one sentence. Mine three pages, quietly change a payment, watch verify fail. Stay at difficulty = 3.

You will (in class)

1. Run the hash Demo, then fill mine.
2. Run the three-block Demo; change Ava’s payment without re-mining; watch verify fail.
3. Unbundle: your class ERC-20 does not need its own Bitcoin.

After class

Run All on notebooks/labs/L1_proof_of_work.ipynb. Draft A2’s minter / cap / pause / lost-key line.

You will not

• raise difficulty above 3
• launch a new chain for Eagecoin