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  • BUILDERS
  • Notices (README)
    • Preparing for Holocene breaking changes
  • App developers
    • Overview
    • Superchain app quick start
    • Tutorials
      • Communicating between chains in Solidity
      • Bridging ETH with viem
      • Bridging ERC-20 tokens with viem
      • Bridging your custom ERC-20 token to OP Mainnet
      • Bridging your standard ERC-20 token to OP Mainnet
      • Viewing deposits and withdrawals by address
      • Tracing deposits and withdrawals
      • Estimating transaction costs
      • Triggering OP Mainnet transactions from Ethereum
    • Transactions
      • Transaction fees
      • Estimating fees
      • Setting gas parameters
      • Transaction statuses
      • Troubleshooting
    • Bridging
      • Basics of bridging
      • The Standard Bridge
      • Custom token bridges
      • Sending data between L1 and L2
    • App tools
      • Open source code repo
      • Supersim Multichain Development Environment
      • Superchain Dev Console (opens in a new tab)
  • Node operators
    • Architecture
    • Run a node in the Superchain
    • Tutorials
      • Running a node with Docker
      • Building a node from source
      • Running OP Mainnet from source
      • Running OP Sepolia from source
    • Configuration
      • Base configuration
      • Consensus layer configuration
      • Execution layer configuration
    • Node management
      • Using blobs
      • Using Snap Sync
      • Snapshot downloads
      • Monitoring
      • Troubleshooting
    • Network upgrades
    • JSON-RPC API
    • Software releases
  • Developer tools
    • Overview
    • Connecting
      • Networks and RPC endpoints
      • RPC providers
    • Building
      • Faucets
      • Oracles
      • NFT tools
      • Block explorers
      • Account abstraction
    • Monitoring
      • Analytics
      • Historical data
    • Metal L2 Tools
      • Metal L2 Mainnet Explorer (opens in a new tab)
      • Metal L2 Bridge (opens in a new tab)
      • Superchain Bridges (opens in a new tab)
      • Superchain Faucet (opens in a new tab)
      • Superchain Dev Console (opens in a new tab)
    • Fee calculator
  • METAL L2 MAINNET
  • Getting Started: Metal L2
  • Differences Between Ethereum and Metal L2
  • Networks and RPC Endpoints
  • Biconomy
  • Contract Addresses
  • Bridged Token Addresses
  • Identity
  • Testing
    • Running a local development environment
    • Testing apps on Metal L2
  • Security
    • Security Model & FAQ
    • Privileged Roles
    • Security Policy
  • OP STACK
  • About: OP Stack
  • Differences Between Ethereum and OP Stack Chains
  • OP Stack Components
  • Superchain Explainer
  • Design Philosophy & Principles
  • Protocol
  • Transactions
    • Transaction fees
    • Transaction flow
    • Transaction finality
    • Deposit flow
    • Withdrawal flow
    • Forced transaction
    • Cross domain transaction
    • Transactions
  • Features
    • SendRawTransactionConditional
  • Security
    • Security FAQs
    • Pause and unpause the Bridge
    • Audit reports
  • Audit reports
  • Fault Proofs
    • Fault proofs explainer
    • FP system components
    • FPVM: Cannon
    • OP-Challenger
    • MIPS.sol
    • FP Mainnet security
  • Rollup
    • Rollup overview
    • Derivation pipeline
    • Sequencer outages
  • Smart Contract overview
  • CONNECT
  • Contribute
    • Contribute to Metal L2 Docs
    • Docs Style Guide
  • Resources
    • Optimism Node Changelog (opens in a new tab)
    • Glossary
  • Superchain
  • The Superchain explainer
  • The Superchain Registry
  • Blockspace Charters and the Standard Rollup Charter
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Builders
Notices (README)

Notices

Documentation covering changes in the Metal L2 ecosystem.

Preparing for Holocene Breaking Changes
Notices (README)App developers
Metal L2 Documentation