Blockchain Knowledge Base

Welcome to the world of blockchain. If you’re in the early stages of exploration and eager to find out why blockchain matters and how it works, you’ve come to the right place.


Blockchain is a new software infrastructure for the Internet. It allows us to build open, digital networks that everyone can trust.

Read our introduction to blockchain technology →

How Does a Blockchain Work?

A blockchain uses a peer-to-peer network design and cryptographic functions to create a distributed ledger of immutable, or tamperproof, transactions. One of the specific innovations of blockchain technology (and the inspiration for our company’s name) was the consensus algorithm, a system that enables participants across a network to reach consensus and approve a block of transactions.

Read our deep dive on how a blockchain works →


Ethereum is an open source blockchain that was officially launched in 2015. Built by developers for developers, Ethereum is often considered the most programmable blockchain for creating smart contracts and decentralized applications, also known as dapps. In recent years, Ethereum has also emerged as the default platform for enterprise deployments. It is currently the most actively developed blockchain in the world, with the highest daily value transfer of any blockchain network.

Read our introduction to Ethereum →

What Is Ethereum 2.0?

Ethereum 2.0 is an upgrade to the Ethereum network that will improve its scalability, security, and accessibility. The upgrade is rolling out in phases, starting in 2020 with Phase 0 and the launch of the beacon chain, which will implement a Proof of Stake consensus algorithm.

Explore our Ethereum 2.0 knowledge base →

How Do I Start Using Ethereum?

The best way to discover the power of Ethereum is to start using it.

  • Anyone. MetaMask is a popular crypto wallet that allows you easily buy cryptocurrency, safely store your tokens, and interact with blockchain-based applications.

  • Developers. Explore our developer portal for an introduction to the Ethereum tech stack, an overview of the most popular tools, and helpful courses and tutorials.

  • Enterprises. Visit our Enterprise Ethereum page to demo our blockchain products and find out what Ethereum can do for your organization.

What Is a Blockchain Token?

A token is a digital asset that is created, issued, and managed on a blockchain. Tokens are designed to be secure and instantly transferable. They can be programmed with a variety of built-in functionalities.

Explore our TokenWork series →

What Is Cryptocurrency?

Cryptocurrency, also known as crypto, is a form of digital currency that is created, stored, and secured on a digital ledger—often a blockchain—using strong cryptography. Cryptocurrency is an application of underlying blockchain technology.

Read our introduction to cryptocurrency →