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

Blockchain Networks

Blockchain Networks explains network selection, nodes and blocks, gas and block explorers with practical wallet, network and Web3 checks.

Network selection

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

For network selection, 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 network selection 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, network selection 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

Nodes and blocks

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

A practical review of nodes and blocks separates origin, target, permission or value, and network state. Fees, confirmation speed and contract behavior change with network conditions, so wallet estimates should be interpreted in the context of the active chain. 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 nodes and blocks also means considering what remains true after you confirm. Connections, message signatures, transaction signatures and token approvals are distinct requests; review the spender, allowance and expected effect separately. 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, nodes and blocks 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

Gas

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

Understanding gas also means considering what remains true after you confirm. Fees, confirmation speed and contract behavior change with network conditions, so wallet estimates should be interpreted in the context of the active chain. 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 gas should be considered together with seed phrases, private keys, device conditions and permission management. Connections, message signatures, transaction signatures and token approvals are distinct requests; review the spender, allowance and expected effect separately. A legitimate workflow does not require sending recovery secrets or verification codes to another person or entering them into an unknown webpage.

More broadly, gas 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

Block explorers

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

Security around block explorers should be considered together with seed phrases, private keys, device conditions and permission management. Connections, message signatures, transaction signatures and token approvals are distinct requests; review the spender, allowance and expected effect separately. A legitimate workflow does not require sending recovery secrets or verification codes to another person or entering them into an unknown webpage.

For block explorers, begin by identifying the active network, the exact address or contract involved, and the result you actually intend to achieve. Transaction hashes, block height, contract addresses and event logs provide useful verification points for distinguishing interface delays from actual on-chain state. 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, block explorers 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