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User Guide: Custom networks and sidechains
Learn about best practices for using custom networks and sidechains.
用户指南：Gas
加密货币和 web3 的新手？
Guides
如何在区块链浏览器上查看我的钱包活动
Etherscan 让您可以在以太坊区块链上搜索并跟踪交易、地址、代币、价格以及在以太坊区块链上发生的其他活动。如需其他网络的区块浏览器链接，请滚动到底部。 但是，它们的功能都非常相似，因此下面的指南可能也适用于您访问的任意站点。
How to connect to the Gnosis Chain network (formerly xDai)
For an automatic process, go to Chainlist, search for Gnosis, and connect your wallet.
如何估算 Gas 费
获取 Gas 价格
How to externally verify that your balance is correct
Verify your account balances outside of MetaMask.
How to revoke smart contract allowances/token approvals
Learn the difference between revoking approvals, disconnecting dapps, and how to do it.
How to run your own Ethereum node and use it with MetaMask
Ethereum.org is the best place to start learning how to run your own Ethereum node.
How to use Liquidity Pool (LP) tokens
Curious about LP tokens? Dive in here.
Help
I am trying to pay the gas fee for OpenSea in order to sell my NFTs
You need to have enough ETH in your wallet to pay for gas.
Why am I being asked to sign in? (Sign In With Ethereum)
Sign In With Ethereum (SIWE) is a web3-native method of managing your digital identity.
Why are my gas fees so high?
The price of gas is dynamic and is essentially a product of demand. Learn more here.
Why did I pay gas fees for a failed transaction?
Even if it fails, validators must verify and execute your transaction, which takes computational power.
Learn
Bitcoin (BTC) on EVM-compatible networks
Not all blockchains are created compatible. Keep an eye out for new developments.
Does MetaMask support Polkadot?
Not currently.
ETH on Sepolia and Holešky (testnets)
ETH on these testnets is a dummy balance and cannot be withdrawn or sent to mainnet.
Field Guide to Bridges
What you need to know about bridges.
How do I send ETH/other tokens to a layer 2 or other network?
Learn how to bridge tokens between networks using MetaMask.
How does MetaMask connect to a blockchain network?
Curious how MetaMask wallet lets you interact with blockchain networks? Read on.
How does MetaMask generate your keys?
Learn more about how your keys are securely and mathematically generated.
Internal transactions
What are internal transactions?
Sending (or receiving) a transaction with ENS
What's an ENS, and how does it work with transactions?
Tax compliance and crypto-assets
You should consult a tax professional about your crypto-assets. Learn why.
第三方互换平台
虽然 MetaMask 有自己的内置互换工具，但第三方代币互换平台已经形成了一个完整的生态系统。本文旨在指出用户在兑换代币时经常遇到的一些问题，并可以当作第三方互换平台支持服务的非权威性目录。MetaMask 与这些组织并无关联。
What are metatransactions?
Metatransaction describes a transaction that you instruct a third party to complete on your behalf.
What is a token contract address?
Learn more about token addresses.
What is 'eth sign' and why is it a risk?
eth_sign is a transaction signing method that is now disabled by default in MetaMask.
What is Infura, and why does MetaMask use it?
Infura is the service provider that MetaMask uses to get information on and off blockchains.
What role does staking play on Ethereum?
Staking is used in a very wide variety of contexts. Let's take a look at some of the most common.