How to Seamlessly Migrate Your DApps to Arbitrum Network Migrating a dApp from Ethereum mainnet (or another L2) to @arbitrum in 2026 is straightforward due to near-identical EVM compatibility. Follow this practical guide. 1. Assess Compatibility Check contracts for L1-specific dependencies (e.g., block.timestamp manipulation rare on L2s). Most Solidity code deploys unchanged. Audit for sequencer-specific behaviors if using advanced features. 2. Update Network Configuration In your frontend (wagmi/viem/ethers): Add Arbitrum One (Chain ID 42161, RPC https://t.co/APst9H9gDp). Update any hardcoded RPCs or chain IDs. 3. Redeploy Contracts Use Hardhat/Foundry/Remix. Set network to arbitrumOne in config. Deploy upgraded versions if needed (e.g., add Stylus Rust contracts for performance). Verify source code on Arbiscan immediately after deployment. 4. Handle Data Migration For stateful dApps (e.g., lending pools): - Snapshot current state on origin chain. - Deploy new contracts on Arbitrum. - Use a migration contract to transfer ownership/funds or allow users to claim/migrate positions. - For NFTs/tokens: Remint on Arbitrum or use cross-chain bridges (LayerZero, Wormhole) for portability. 5. Update Frontend & Integrations Point API calls, subgraph (The Graph), oracles (Chainlink on Arbitrum), and wallet connectors to Arbitrum. Test wallet switching flows. 6. Bridge Liquidity & Users Encourage migration with incentives (lower fees, airdrops). Use official bridge for ETH/USDC; third-party (Across, Hop) for faster/cheaper transfers. 7. Test Extensively Use Arbitrum Sepolia testnet first. Simulate user flows, gas usage, and edge cases. Monitor with Tenderly or Arbiscan. 8. Post-Migration Announce via X/Discord, update docs, and monitor for issues. Arbitrum’s lower gas (~100x cheaper) and faster confirmations usually lead to higher user activity post-migration. Many projects (e.g., GMX, Pendle) successfully migrated or launched natively—low friction makes Arbitrum a natural upgrade path. Learn more; https://t.co/4VqjGmdFCC