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MetaMask - A crypto wallet for blockchain apps

Your key to blockchain applications. MetaMask is the leading self-custodial wallet. The safe and simple way to access blockchain applications and web3. Trusted by millions of users …
MetaMask is a non-custodial, open-source cryptocurrency wallet that allows users to securely store, manage and interact with various cryptocurrencies, non-fungible tokens (NFT) and dApps on the Ethereum blockchain as well as EVM-compatible blockchains.
In addition, the MetaMask wallet has a built-in DeFi service that allows users to swap various digital assets. The service works on the principle of an aggregator. It collects real-time quotes for coins from leading decentralised exchanges (DEXs), selecting the best prices.
MetaMask is available as a mobile app for iOS and Android and as a browser extension for Google Chrome, Firefox, Brave, Microsoft Edge and Opera.
MetaMask's website
All transactions and all wallet balances are stored in a blockchain, and only private key holders have control over them. MetaMask stores these keys in encrypted form on the user's device and allows them to control their cryptocurrency. Transactions are signed and sent to the blockchain on the user's computer or mobile device.
As a cryptocurrency wallet, MetaMask is mainly used to securely store and manage cryptocurrencies on the Ethereum blockchain, but its functionality is not limited to this. Here are the main uses of MetaMask:
  • Cryptocurrency storage. MetaMask serves as a digital wallet where users can securely store their ETH and other compatible tokens.
  • Transaction management. MetaMask allows users to send their tokens to other addresses and receive tokens from other addresses. It also provides a transaction history enabling users to track their past transactions.
  • NFT storage and management. In addition to cryptocurrencies, the mobile version of MetaMask allows users to store and manage their NFTs.
  • Token swapping. A built-in service allows MetaMask users to swap various tokens via DEX directly from their wallets.
  • Interaction with dApps. MetaMask acts as a bridge between users and dApps. It allows users to easily interact with various dApps, including DEXs, DeFi platforms, games and more.
  • ETH staking. MetaMask allows users to stake ETH through the Lido or Rocket Pool protocols.
MetaMask is currently one of the most popular wallets for the Ethereum ecosystem and for good reasons. It is widely regarded as a reputable and trustworthy cryptocurrency wallet. However, everyone has their own criteria when choosing a crypto wallet. Whether MetaMask is the best choice for you depends on your specific requirements.
MetaMask offers several advantages that contribute to its popularity:
  1. 1.
    User-friendly interface. MetaMask provides a user-friendly and intuitive interface making it welcoming to both beginners and experienced users. Its seamless integration with popular web browsers and straightforward setup process enables users to quickly start using the wallet without much technical expertise.
  2. 2.
    Ethereum ecosystem compatibility. MetaMask is specifically designed for the Ethereum blockchain and supports a wide range of Ethereum-based tokens, including ETH, as well as any ERC-20 and ERC-721 tokens.
  3. 3.
    Seamless dApp integration. MetaMask acts as a bridge between users and dApps built on the Ethereum blockchain. This integration simplifies the user experience and fosters easy adoption of blockchain-based services.
  4. 4.
    Additional services. MetaMask has built-in services that allow users to swap tokens and stake ETH.
  5. 5.
    Privacy and security. MetaMask stores private keys locally on the user's device without gathering any personal information about the user. This ensures that users retain full control over their funds and sensitive information.
  6. 6.
    Hardware wallet integration. MetaMask supports hardware wallets. Trezor, Ledger, Lattice, Keystone and AirGap Vault wallets are currently supported in the browser extension, and the mobile version supports Keystone.
  7. 7.
    Active development and community support. MetaMask benefits from an active and dedicated development team, continuously improving its features and security. The wallet also has a large community of users and developers who contribute to its development and provide support.
While MetaMask offers many advantages, it's important to consider some of its disadvantages:
  1. 1.
    Limited blockchain support. MetaMask primarily focuses on the Ethereum blockchain, which means it may not be the best option for users who want to manage cryptocurrencies on other blockchain networks. For example, MetaMask does not support Bitcoin (BTC) or Ripple (XRP).
  2. 2.
    Dependency on browsers. The browser version of MetaMask operates as a browser extension, which means it relies on the stability and security of the underlying web browser.
  3. 3.
    Hot wallet. MetaMask is a "hot" wallet, which means that it's connected to the internet. This increases its vulnerability.
Yes, MetaMask is free to use. It doesn't charge any fees for creating and using a MetaMask wallet. Users can download and install the MetaMask browser extension or mobile app without incurring any direct costs.
However, it's important to note that when interacting with the Ethereum blockchain, certain transaction fees, known as gas fees, apply. These fees are required to process transactions and execute operations on the Ethereum network.
MetaMask has a convenient and user-friendly interface, so it is quite easy to use.
To create an account and start using your MetaMask wallet, follow a few simple steps.
  1. 1.
    Install MetaMask:
    1. 1.
      Visit the official MetaMask website and download the extension for your preferred web browser.
    2. 2.
      Follow the installation prompts and add the MetaMask extension to your browser.
      Installing MetaMask
  2. 2.
    Create a new wallet:
    1. 1.
      Click on the MetaMask extension icon in your browser's toolbar.
    2. 2.
      Click "Get Started" on the welcome screen.
    3. 3.
      Set a strong password for your wallet.
    4. 4.
      Accept the terms of use and privacy policy.
    5. 5.
      Click on 'Create a new wallet'.
      Creating a new wallet
  3. 3.
    You will be provided with a unique seed phrase. Write down this seed phrase and store it in a safe place. This phrase is crucial for wallet recovery and should be kept confidential.
  4. 4.
    Access your wallet:
    1. 1.
      You can access your wallet by clicking on the MetaMask extension icon in your browser's toolbar.
By default, MetaMask connects to the Ethereum Mainnet. To switch to a different network, click on the network name at the top of the MetaMask window and select the desired network from the dropdown menu.
To deposit ETH into your MetaMask wallet, open MetaMask and hover over the account name at the top of the window. You'll see the option 'Copy to clipboard' appear. Click to copy your public address. Paste your address in the recipient field in the app, exchange or wallet you are sending your tokens from.
Copying address to clipboard
If you want to deposit ERC-20 tokens, navigate to the 'Assets' tab and select the token you need. If the token is not on the list, you'll need to add it as a custom token first. Go to the 'Assets' tab, click 'Add Token,' and enter the contract address, token symbol, and decimal places. Once added, you can deposit the tokens by sending them to your MetaMask wallet address.
To withdraw funds from your wallet, click the 'Send' tab in the MetaMask window. Enter the recipient's wallet address in the 'To' field and specify the amount you want to send and select the desired token. Review the transaction details, including gas fees, and click 'Next.' Then confirm the transaction and enter your wallet password to authorise the transfer.
What is the private key string in MetaMask?
The private key string in MetaMask is a cryptographic string that represents the private key associated with your MetaMask wallet. The private key is a crucial component of your wallet's security and serves as a digital signature for authorising transactions.
What is a MetaMask secret recovery phrase?
The MetaMask secret recovery phrase, also known as the seed phrase or backup phrase, is a sequence of 12 randomly generated words that serve as a backup and a means to restore your MetaMask wallet. It's a critical component of your wallet's security and should be kept secret.
What is my MetaMask wallet address?
The MetaMask wallet address is a unique identifier associated with your MetaMask wallet on the Ethereum blockchain. It's a hexadecimal string of characters that starts with "0x" and is followed by a series of letters and numbers. This address is used to send and receive Ethereum and ERC-20 tokens.
To find your wallet address, simply hover your cursor over the selected account label, which will allow you to copy the wallet address to the clipboard.
What is transaction hash in MetaMask?
A transaction hash is a unique identifier for a specific transaction that has been submitted to the blockchain. It is a long string of characters that serves as a reference to the transaction's details and status on the blockchain.
The transaction hash acts as a digital fingerprint for the transaction and provides a way to track and verify its status on the blockchain.
What to do if your MetaMask is hacked?
One important property of cryptocurrencies is the irreversibility of transactions. Therefore, if someone gains unauthorised access to your wallet and withdraws funds from it, there is no way to get them back.
If you suspect that your wallet has been compromised, you need to create a new wallet on a different browser (or a different mobile device in the case of the mobile version). Then transfer any remaining funds from the compromised wallet to the new wallet and stop using the compromised wallet. If any funds have been stolen from your wallet, report it to the relevant authorities.
Last modified 5mo ago