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What is cryptocurrency?

Cryptocurrency is a digital or virtual currency that uses cryptography to secure its transactions and to control the creation of new units. Cryptocurrencies are decentralized, meaning they are not subject to government or financial institution control. Bitcoin, the first and most well-known cryptocurrency, was created in 2009.

What is Bitcoin?

Bitcoin is a cryptocurrency and a payment system, first proposed by an anonymous person or group of people under the name Satoshi Nakamoto in 2008. Bitcoin is unique in that there are a finite number of them: 21 million. Unlike traditional currency, Bitcoin is not regulated by a central bank or government.

What is Ethereum?

Ethereum is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of fraud or third party interference. Ethereum is a Turing complete platform meaning it can run any program, regardless of the complexity.

What is a blockchain?

A blockchain is a digital ledger of all cryptocurrency transactions. It is constantly growing as "completed" blocks are added to it with a new set of recordings. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data. Bitcoin nodes use the block chain to differentiate legitimate Bitcoin transactions from attempts to re-spend coins that have already been spent elsewhere.

What is a cryptocurrency wallet?

A cryptocurrency wallet is a software program that stores private and public keys and allows users to send and receive digital currency and monitor their balance. Wallets can be desktop, mobile, or web-based.

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