Check an ERC-20 Token Before You Bridge It

Before you bridge an ERC-20, match the token’s contract address on its source chain to the asset the bridge says it will deliver. ERC-20 is a common standard for tokens on Ethereum-compatible networks, but a token’s name and ticker are not unique. A wrong match can send you a lookalike or leave you with a different token than you expected.

How do I identify the right ERC-20?

Check the token’s contract address and network in a trusted source, such as the issuer’s own site or documentation. The address is the token’s on-chain identity; “USDC” or another familiar ticker is only a label that anyone can copy. Make sure the network selected in your wallet is the same one named by the issuer.

Then compare that address with the token page on a block explorer for the source chain. A block explorer is a site for viewing on-chain records. Check the contract address, name, symbol, and decimals, which determine how token amounts are displayed. Treat the name and symbol as clues, not proof. A verified contract lets you compare published code with deployed code, but it does not prove the token is safe or genuine.

Bridge routes can handle tokens in different ways. Some lock tokens on one chain and issue a representation on another; others burn tokens on one side and release them on the other, or use available liquidity. For a fuller look at how that works on Manta, see our manta bridge guide. In every case, confirm the destination token address the bridge lists before sending.

How do I check the bridge’s destination token?

Use the bridge’s own token list or route details to confirm the destination network and token contract. The destination token may have a different address from the source token because it is a separate contract on another chain. Its ticker can look identical, so compare the full address and the bridge’s stated mapping.

Before approving a transfer, check which contract will receive permission to move your tokens. An approval is permission for a contract to spend tokens from your wallet, often through the ERC-20 approve function. Confirm that the spender address matches the bridge route you selected, and read the amount. If the wallet offers a limited approval, it can reduce how much that contract may move.

What should I review before sending?

Read the route details and transaction in your wallet before signing. Check the source and destination networks, token, amount, recipient, fees, and any minimum or maximum transfer limits. The bridge may also require the destination network’s native coin to pay for later transactions, even if the bridged token arrives successfully.

• Match the source network and token contract against the issuer’s information.
• Confirm the destination network and token address in the bridge’s route details.
• Check the approval spender and amount before you sign.
• Review fees, limits, recipient address, and any destination gas needs.

If the bridge does not show a clear destination token mapping, stop and verify it through the bridge operator’s official information before proceeding. The practical rule is simple: identify the token by its chain and contract address, then check what the chosen route delivers. A familiar ticker alone cannot tell you that.