Token Approvals Explained on zkSync
Why token approvals matter, what they authorize, and how to review them responsibly.
Why this matters on zkSync
An approval gives a contract permission to spend a specified token balance under the rules of that approval. Reviewing old approvals can reduce exposure to applications you no longer use.
zkSync is an Ethereum scaling ecosystem with its own network context and token representations.
zkSync is part of the Ethereum scaling ecosystem. The same ticker can exist on Ethereum and on zkSync as separate token contracts, so a balance seen on one network cannot be assumed to exist, or to be redeemable at the same value, on the other.
zkSync: what to pay attention to
- Security: Check the active network, contract and destination before signing.
- Assets and tokens: Verify the asset contract on zkSync before assuming it matches another network.
- Costs: Compare network fees with bridge and liquidity costs for the complete route.
A zkSync checklist for this topic
- Check the domain you are on before connecting a wallet for any zkSync action.
- Send a small test amount first when an address or route on zkSync is new to you.
- Verify the contract address on zkSync from an independent source rather than a ticker or a logo.
- Read what a zkSync transaction or signature request actually authorizes before approving it.
Bridge from zkSync
Compare network fees with bridge and liquidity costs for the complete route. On the Linea side: verify the token contract on Linea before moving it.
The bridge guide below is informational; any transaction depends on current network conditions and the route shown in the bridge interface.
zkSync → Linea BRIDGE GUIDE