Ethereum Wallets and the Base to Arbitrum Route

Why this matters on Ethereum

Base and Arbitrum are both L2 environments, but that does not make their token contracts interchangeable. Treat the destination token as a network-specific asset.

Ethereum is an EVM network and the base layer for a large ecosystem of tokens, applications and Layer 2 networks.

Ethereum uses EVM-style addresses and token contracts, which means the same address can hold balances on several EVM networks at once. A balance that is missing on Ethereum may simply be sitting on a different network.

Ethereum and this route

Ethereum is neither end of the Base to Arbitrum route, but a wallet that uses Ethereum often holds balances on those networks too. If your assets are on Ethereum, they would first have to be on Base for this route to apply.

Leaving Base

Consider Base transaction costs together with bridge and route costs when moving small balances. Use trusted interfaces and verify destination network and token before signing.

Arriving on Arbitrum

Confirm the Arbitrum token contract rather than assuming an identical ticker represents the same asset everywhere. Compare L2 transaction costs with any bridge or liquidity costs required to reach the destination.

Ethereum: what to pay attention to

• Costs: Ethereum gas can make very small balance movements uneconomical, so compare total execution cost with the balance value.
• Security: Pay close attention to contract approvals, transaction details and the exact domain used to initiate a transaction.
• Assets and tokens: Verify the ERC-20 contract address and distinguish Ethereum-native assets from representations on other networks.

A Ethereum checklist for this topic

• Keep enough native balance on the source network to pay for the transaction.
• Do not assume a route from Ethereum is available; check the current interface and quote.
• Send a small test amount first if the route or address is new to you.
• Confirm that the token you hold on Ethereum is supported for the route you are reading about.

Bridge from Ethereum

Ethereum gas can make very small balance movements uneconomical, so compare total execution cost with the balance value. On the Polygon side: confirm that the token is held on Polygon and verify its contract before moving or swapping it.

The bridge guide below is informational; any transaction depends on current network conditions and the route shown in the bridge interface.

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