Wallet, network and Web3 questions
What is the difference between a seed phrase and a private key?
A seed phrase can recover a set of wallet keys, while a private key directly controls a specific account. Both are highly sensitive and should never be shared with support or entered into an unfamiliar website.
Why can the same address show different balances on different networks?
Each network maintains its own state. Even when EVM addresses look identical, balances, contracts and transaction history are separate.
What should I check before sending assets?
Check the recipient address, network, asset, amount and gas, and confirm the receiving service supports that network.
What is gas?
Gas is the network resource used to execute transactions or smart-contract calls. Cost depends on network conditions, complexity and fee settings.
What is a transaction hash used for?
A transaction hash identifies an on-chain transaction and can be used in a block explorer to inspect status, block inclusion, fees and logs.
Can connecting to a DApp move my assets?
A connection alone usually does not transfer assets, but later signatures, transactions or approvals may change on-chain state.
Are message signatures safe?
A message signature may be used for authentication, orders or permissions. Do not sign content you do not understand.
What is a token approval?
A token approval allows a contract to spend a defined amount of a token. Check the spender, allowance and whether the permission remains active.
What is an EVM network?
EVM networks share a similar account and contract model, but Chain IDs, gas assets, contract deployments and state are network-specific.
How does Layer 2 relate to the mainnet?
Layer 2 systems scale transaction processing while relying on the base layer in different ways. Moving assets across layers usually requires bridging and additional confirmations.
Can a wallet recover my private key?
No. In self-custody, private keys and seed phrases are controlled by the user. Official staff should never ask for them.
What should I do with an unfamiliar airdrop?
Do not follow links embedded in unknown tokens or NFTs and do not sign unclear approvals merely to “claim” something.
Is it safe to use a wallet on public Wi-Fi?
Public networks and devices add uncertainty. Avoid important asset operations when you cannot adequately verify the environment.
Does Ethereum staking guarantee returns?
No. Rewards vary with network conditions and validator performance, while digital-asset prices can also change.
Why can validators be penalized?
PoS networks require validators to participate correctly. Downtime can reduce rewards and serious violations can lead to stronger penalties.
Is a staking exit immediate?
Not necessarily. Exits and withdrawals may depend on protocol queues, network state and service processes.
How can I judge whether a contract is trustworthy?
Use trusted sources, verify the contract address, review public evidence and inspect the actual permissions and methods. No single signal guarantees safety.
Why is an asset missing after a successful transfer?
First verify the transaction hash, then check the selected network, token contract and wallet display settings.
Security principle
Staking and validator risk
Staking rewards are not guaranteed, exits can involve waiting, validators may be penalized, smart contracts can have technical risk, and digital-asset prices can fluctuate.