Advanced
Rollups: Optimistic vs ZK Internals — Check your understanding
Understand scaling choices.
Developer Advanced
8/8 — Rollups: Optimistic vs ZK Internals — Check your understanding
Explain itWalk a teammate through when funds are truly withdrawable in optimistic vs validity mode, and what DA/escape hatches exist.
Bitcoin seems to be a very promising idea. I like the idea of basing security on the assumption that the CPU power of honest participants outweighs that of the attacker.
Edge casesChallenge spam, sequencer censorship, DA outages, and proof delays should be covered in your tests and runbooks.
Key points
- State when withdrawals are:Final in optimistic mode and what stops them (fraud proof).
- State when withdrawals are:Final in validity mode (proof verified).
- Describe what happens if:DA goes down and how users are protected.
- Explain the sequencer trust:Model and how users escape censorship.
- List which events/metrics you:Monitor to detect stalled proofs or DA issues.