✅ Master Fraud Proof Mechanics
Understand challenge periods, proof construction, and economic security
Understand how optimistic rollups stay secure
Your Progress
0 / 5 completed🎓 Key Takeaways
Let's review the essential concepts of fraud proofs and optimistic rollup security.
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Optimistic Security
- •Assume validity, verify only when challenged
- •7-day challenge window for disputes
- •Lower costs than ZK proofs
- •EVM compatibility maintained
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Proof Components
- •Pre-state root before transaction
- •Transaction data being challenged
- •Claimed vs. correct post-states
- •L1 re-executes to verify fraud
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Economic Incentives
- •Large sequencer bonds ($10M-50M)
- •Validator rewards from slashed bonds
- •Attacks must be unprofitable
- •Game theory ensures security
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Security Guarantee
- •Requires just 1 honest validator
- •Fraud detection is economically incentivized
- •L1 provides final arbitration
- •Withdrawal delays protect users
🧪 Knowledge Check
Test your understanding of fraud proofs and optimistic rollup security. Get 4 or more correct to complete the module!
1. What is the core assumption of optimistic rollups?
2. How long is the typical challenge period for optimistic rollups?
3. What are the required components of a fraud proof?
4. What happens to a sequencer's bond if fraud is proven?
5. What is the minimum number of honest validators needed for security?
← Economic Security
Complete the quiz to finish this module