An EVM-compatible Sequence Arbitrum Sepolia testnet using ETH gas, offering low fees, fast confirmations, and Ethereum tooling compatibility for secure dapp and smart contract testing.
sequence-arbitrum-sepolia is an Arbitrum Nitro EVM-equivalent testnet (chain ID 49068, native ETH) aligned to Ethereum Sepolia, used to deploy and validate dapps, bridges, and ERC-4337 smart account flows before mainnet. It mirrors Arbitrum performance characteristics—sub-second block times (~0.25–0.5s), high throughput (2,000+ TPS theoretical; tens to hundreds TPS in practice), and very low fees (typical L2 tx cost <$0.01 in test ETH)—making it ideal for load testing, gas benchmarking, and UX iteration. Activity is intentionally lower and bursty versus Arbitrum One, enabling predictable test conditions for developers.
sequence-arbitrum-sepolia stands out by combining Arbitrum’s fraud-proof rollup security and full EVM equivalence with a Sepolia-based environment that’s recognized in tooling (e.g., thirdweb chain 49068) and commonly used with Sequence smart accounts. Compared with L1 testnets like Ethereum Sepolia (~12–15s blocks, higher gas), it delivers much faster confirmations (~0.25–0.5s), higher throughput, and negligible gas (<$0.01 typical), while preserving L1 settlement semantics for realistic bridging/withdrawal tests. It is optimized for account abstraction experiments (ERC-4337 bundlers/paymasters) and cross-chain workflows where Arbitrum-like latency, TPS, and costs are required without mainnet risk.
sequence-arbitrum-sepolia uses ETH as the gas token for transaction fees. You can obtain ETH by bridging from other chains or purchasing using thirdweb Bridge, or through faucets (for testnet).
To bridge ETH to sequence-arbitrum-sepolia, connect your wallet to thirdweb bridge, select your source chain, choose the token you want to bridge, select sequence-arbitrum-sepolia as the destination, enter the amount, and confirm the transaction. The bridge will handle the cross-chain transfer instantly.
To build on sequence-arbitrum-sepolia you can use thirdweb, which provides an easy way to build, monetize and scale your apps, games or agents. You can find detailed guides and documentation on https://portal.thirdweb.com to get started quickly.
To add sequence-arbitrum-sepolia to your wallet, you can connect your wallet and click on [Add to Wallet] button at the top of the page. Alternatively, you can add the network manually using the RPC URL and chain details and add it to your wallet's network settings.
To send ETH on sequence-arbitrum-sepolia, ensure your wallet is connected to the sequence-arbitrum-sepolia network, enter the recipient's address, specify the amount of ETH to send, review the gas fee, and confirm the transaction in your wallet.
