OP Stack.md

OP Stack

How OP Stack works

• OP Stack Documentation
• Optimism Bedrock Specs
• OP Stack Specs
• Diff of op-geth

Related Past Audits

Audits & Contests

• Past Audits
• Optimism Contest 01/23
• Optimism Contest 03/23
• BASE Contest 05/23
• Blast Contest 02/24

Bugs

• Abuse re-entrancy protection to force withdrawal to fail in CrossDomainMessenger
• TRST M-3: Memory expansion cost not accurate in baseGas()
• CrossDomainMessenger is a proxy, baseGas() inaccurate

Geth

• Geth Documentation
• Dissecting EVM using go-ethereum Eth client implementation by @deliriusz_eth
  • Part 1 - Transaction execution flow
  • Part 2 - EVM
  • Part 3 - Bytecode interpreter