🚨 “Why wait 7 days to withdraw when you can do it in 1 tx?”

The L2 game just changed. Meet BOB — the first Hybrid ZK Rollup using ZK fraud proofs + validity proofs on demand. 🧠⚡️

1. Optimistic Rollups: cheap, but slow
ZK Rollups: fast, but expensive
BOB?
- Cheap by default (optimistic)
- Fast when needed (on-demand ZK)
The best of both worlds — no compromises.

2. ZK Fraud Proofs = new paradigm
→ 1 fraud proof = 1 Ethereum tx
→ Anyone can challenge, for < 0.5 ETH
→ No 7-day wait, no multi-tx bisection game
Compare that to Arbitrum/Base where challenges can cost millions. 👀

3. Need instant withdrawal?
Pay to submit a validity proof.
No challenge period. No delay.

If not in a rush? Stick with cheap optimistic flow.
BOB adapts to your use case.

4. Built on:
- OP Stack (OP Kailua extension)
- ZK Proofs by RISC Zero & Boundless
- Infra powered by Conduit
A true modular L2 with Ethereum-grade security & blazing-fast resolution.

5. BOB isn’t just a rollup — it’s a blueprint for future L2s.
And it’s not just theory.
This is live. Onchain. Real fraud-proof logic.
Next stop: Stage 1 + 2 on @l2beat
While others stay in "Others". 🧱

6. If you're building games, AI agents, or modular infra
You need fast, flexible, cheap L2 infra.

@build_on_bob is the first to make hybrid ZK rollups real.

#BuildOnBOB # zkRollup #BOB