1. 1. Intro
3. Code walkthroughs
4. 2. Arbitrum
5. 1. 2.1. Forced transactions
   2. 2.2. Proof system
   3. 2.3. Admin operations
6. 3. Optimism
7. 4. Scroll
8. 1. 4.1. Sequencing
   2. 4.2. Proof system
   3. 4.3. Admin operations
10. L2BEAT specs
11. 5. Permissions section
12. 6. Contracts section
13. 7. Finality page
14. 8. Stages edge cases