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Course · L1 Architect
ADVANCED114 min320 XP

Sequencer & Rollup Architecture — From Centralized Block Producer to Shared Sequencers

Read the canonical Rust rollup stack one piece at a time. Sequencer fundamentals (mempool + builder + batcher), batch posting and DA (calldata / blobs / alt-DA), Flashbots auctions, shared sequencer trajectories.

Source is the primary text

How this course works

This is a hands-on course, not a feed of articles. The lessons build on each other in order, so what you learn from the source carries over to real code.

Start the course →7 lessons · native player
Difficulty
ADVANCED
Workload
114 minutes
Reward
320 XP
Sequencer Fundamentals
  1. 01Lesson 1 — What is a sequencer? The rollup model in 15 minutes16 min · 40 XP
  2. 02Lesson 2 — Batch posting and data availability16 min · 40 XP
Reading Real Sequencer Code
  1. 01Lesson 3 — Reading op-rbuilder — the Reth-based OP Stack sequencer18 min · 45 XP
  2. 02Lesson 4 — Fraud proofs vs validity (ZK) proofs16 min · 45 XP
Building & Decentralization
  1. 01Lesson 5 — Building a minimal sequencer on Reth20 min · 55 XP
  2. 02Lesson 6 — Decentralization paths — shared sequencers and MEV-aware auctions16 min · 45 XP
  3. 03Quiz — Sequencer & Rollup ArchitectureQUIZ · 12 min · 50 XP