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User Guide: Custom networks and sidechains
Learn about best practices for using custom networks and sidechains.
Guia do usuário: cobrança de tarifa (Gas)
Ainda descobrindo criptos e a web3?
Guides
Como verificar a atividade da minha carteira no explorador da blockchain
O Etherscan permite que você pesquise e rastreie a blockchain Ethereum para transações, endereços, tokens, preços e outras atividades que ocorrem nela. Para links dos exploradores de blocos de outras redes, role até a parte inferior. No entanto, todas funcionam de forma similar, então as orientações abaixo provavelmente também se aplicarão a qualquer site que acessar.
How to connect to the Gnosis Chain network (formerly xDai)
For an automatic process, go to Chainlist, search for Gnosis, and connect your wallet.
Como estimar a taxa de Gas
Obtendo o preço de Gas
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ETH on these testnets is a dummy balance and cannot be withdrawn or sent to mainnet.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.
Plataformas de swaps de terceiros
Embora a MetaMask tenha sua própria ferramenta de Swaps integrada, o mercado oferece todo um ecossistema de plataformas de terceiros para o swapping de tokens. Este artigo visa apontar alguns problemas frequentes que os usuários têm ao trocar tokens e serve como um diretório não definitivo para os serviços de suporte à plataforma de swap de terceiros. A MetaMask não é afiliada a nenhuma dessas organizações.
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.