What is blockchain?

Blockchain is a chain of blocks linked by cryptography. Commonly referred to as a type of distributed ledger.

What is Ethereum?

Ethereum is a publicly available and open-source blockchain that features smart contracts.

According to Ethereum.org:

"Ethereum is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of downtime, censorship, fraud or third-party interference."

What are Smart Contracts?

Smart contracts are computational pieces that run on a blockchain.

According to Nick Szabo, who coined the term:

"A smart contract is a computerized transaction protocol that executes the terms of a contract."

What is Solidity?

Solidity is the most famous programming language used to program smart contracts for the Ethereum blockchain.

According to Solidity.readthedocs.io:

"Solidity is a contract-oriented, high-level language for implementing smart contracts."

What is Metamask?

MetaMask is a browser extension that serves as a bridge between the browser and decentralized applications by handling wallets, accounts and transaction signing.

According to Metamask.io:

"MetaMask is a bridge that allows you to visit the distributed web of tomorrow in your browser today. It allows you to run Ethereum dApps right in your browser without running a full Ethereum node."

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