imtoken will never ask for your seed phrase, private key or verification code. Always review the address, network and request details before transferring, signing or approving.

Knowledge Center

Token Approvals

Token Approvals explains approval target, allowance size, persistent permissions and revocation with practical wallet, network and Web3 checks.

Approval target

This section focuses on approval target and how it affects a practical wallet, network or Web3 workflow.

A practical review of approval target separates origin, target, permission or value, and network state. Transaction hashes, block height, contract addresses and event logs provide useful verification points for distinguishing interface delays from actual on-chain state. If a contract is unfamiliar, an allowance is unexpectedly broad, the network is wrong, or the result does not match your intent, stop and verify the transaction hash, contract address or block state before continuing.

Understanding approval target also means considering what remains true after you confirm. Separate chains maintain separate state, and similar-looking address formats do not make networks interchangeable; use the correct block explorer when you need public verification. On-chain transactions generally cannot be reversed by a wallet alone, and a DApp connection is not the same as an approval. The confirmation button is only the final step; the important work happens before it.

More broadly, approval target rarely stands alone. It usually connects to at least one of the following: an address, an active network, gas, a transaction hash, a DApp request or validator state. Reading those pieces together reduces errors caused by choosing the wrong chain, misunderstanding a permission or misreading a pending state.

  • Verify the active network, address or contract target
  • Keep a transaction hash or other public data that can be independently checked
  • Never provide a seed phrase, private key or verification code to anyone

Allowance size

This section focuses on allowance size and how it affects a practical wallet, network or Web3 workflow.

Understanding allowance size also means considering what remains true after you confirm. Transaction hashes, block height, contract addresses and event logs provide useful verification points for distinguishing interface delays from actual on-chain state. On-chain transactions generally cannot be reversed by a wallet alone, and a DApp connection is not the same as an approval. The confirmation button is only the final step; the important work happens before it.

Security around allowance size should be considered together with seed phrases, private keys, device conditions and permission management. Separate chains maintain separate state, and similar-looking address formats do not make networks interchangeable; use the correct block explorer when you need public verification. A legitimate workflow does not require sending recovery secrets or verification codes to another person or entering them into an unknown webpage.

More broadly, allowance size rarely stands alone. It usually connects to at least one of the following: an address, an active network, gas, a transaction hash, a DApp request or validator state. Reading those pieces together reduces errors caused by choosing the wrong chain, misunderstanding a permission or misreading a pending state.

  • Verify the active network, address or contract target
  • Keep a transaction hash or other public data that can be independently checked
  • Never provide a seed phrase, private key or verification code to anyone

Persistent permissions

This section focuses on persistent permissions and how it affects a practical wallet, network or Web3 workflow.

Security around persistent permissions should be considered together with seed phrases, private keys, device conditions and permission management. Separate chains maintain separate state, and similar-looking address formats do not make networks interchangeable; use the correct block explorer when you need public verification. A legitimate workflow does not require sending recovery secrets or verification codes to another person or entering them into an unknown webpage.

For persistent permissions, begin by identifying the active network, the exact address or contract involved, and the result you actually intend to achieve. Fees, confirmation speed and contract behavior change with network conditions, so wallet estimates should be interpreted in the context of the active chain. This turns an interface prompt into information that can be independently checked instead of relying on a name, icon or single status label.

More broadly, persistent permissions rarely stands alone. It usually connects to at least one of the following: an address, an active network, gas, a transaction hash, a DApp request or validator state. Reading those pieces together reduces errors caused by choosing the wrong chain, misunderstanding a permission or misreading a pending state.

  • Verify the active network, address or contract target
  • Keep a transaction hash or other public data that can be independently checked
  • Never provide a seed phrase, private key or verification code to anyone

Revocation

This section focuses on revocation and how it affects a practical wallet, network or Web3 workflow.

For revocation, begin by identifying the active network, the exact address or contract involved, and the result you actually intend to achieve. Fees, confirmation speed and contract behavior change with network conditions, so wallet estimates should be interpreted in the context of the active chain. This turns an interface prompt into information that can be independently checked instead of relying on a name, icon or single status label.

A practical review of revocation separates origin, target, permission or value, and network state. Connections, message signatures, transaction signatures and token approvals are distinct requests; review the spender, allowance and expected effect separately. If a contract is unfamiliar, an allowance is unexpectedly broad, the network is wrong, or the result does not match your intent, stop and verify the transaction hash, contract address or block state before continuing.

More broadly, revocation rarely stands alone. It usually connects to at least one of the following: an address, an active network, gas, a transaction hash, a DApp request or validator state. Reading those pieces together reduces errors caused by choosing the wrong chain, misunderstanding a permission or misreading a pending state.

  • Verify the active network, address or contract target
  • Keep a transaction hash or other public data that can be independently checked
  • Never provide a seed phrase, private key or verification code to anyone