MetaMask

What is MetaMask?

MetaMask is a popular and established browser extension that functions as a cryptocurrency wallet connected to the blockchain Ethereum. MetaMask allows users to interact with the Ethereum ecosystem, which hosts a vast universe of decentralized applications (Dapps), without having to download the entire blockchain on their device. Therefore, it is one of the best Ethereum wallet solutions for easy access to decentralized exchanges (DEXs), gaming platforms, gambling sites and many more applications.
The wallet is compatible with the most widely accepted browsers such as Chrome, Firefox, Brave and Microsoft Edge. In addition to storing Ethereum’s cryptocurrency, ETH, MetaMask also supports cryptocurrencies built on the protocol’s  ERC-20  and  ERC-721  standards.

MetaMask Unique Features

MetaMask allows users to manage accounts and their keys in a variety of ways, including hardware wallets, while isolating them from the site context. This is a great security improvement over storing the user keys on a single central server, or even in local storage, which can allow for mass account thefts (opens new window).

This security feature also comes with developer convenience: For developers, you simply interact with the globally available Ethereum API that identifies the users of web3-compatible browsers (like MetaMask users), and whenever you request a transaction signature, MetaMask will prompt the user in as comprehensible a way as possible. This keeps users informed, and leaves attackers only the option of trying to phish individual users, rather than performing mass hacks (although DNS hacks can still be used for phishing en masse).

MetaMask comes pre-loaded with fast connections to the Ethereum blockchain and several test networks via our friends at Infura (opens new window). This allows you to get started without synchronizing a full node, while still providing the option to upgrade your security and use the blockchain provider of your choice.

Today, MetaMask is compatible with any blockchain that exposes an Ethereum-compatible JSON RPC API (opens new window), including custom and private blockchains. For development, we recommend running a test blockchain like Ganache (opens new window).

We are aware that there are constantly new private blockchains being created. If you are interested in integrating MetaMask with your own custom network, we have an API that has already enabled a number of networks to do the same.

Roadmap

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MetaMask Token Economy

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