🚀 Ultimate Master-Level Breakdown: Transaction Lifecycle in OP Stack 📌 Stage 1: Transaction Submission (EOA → L2 Mempool)
1️⃣ User Constructs a Transaction
🔹 Core Transaction Fields
🔹 Digital Signature (ECDSA secp256k1)
📌 Stage 2: L2 Mempool & Transaction Prioritization
🔹 Mempool Architecture
🔹 Implementation in Reth
🔹 Mempool Eviction & Replacement
📌 Stage 3: Execution in the L2 EVM (reth)
🔹 Fetching Account State from Merkle Patricia Trie
🔹 Account State Lookup
🔹 Opcode Execution in Reth
📌 Stage 4: L2 Block Formation & State Commitment
🔹 Block Assembly
🔹 State Root Calculation
📌 Stage 5: L2 → L1 Batch Submission
🔹 Batch Submission to Ethereum
🔹 EIP-4844 Blob Storage
📌 Stage 6: Fraud Proofs & Finalization
🔹 Fault Proof System
🔹 Withdrawal & Finalization