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Bitcoin is a cryptocurrency, a form of electronic cash which can be spent peer-to-peer.
It was launched in 2009 by an anonymous person or group known as Satoshi Nakomoto, pioneering a new technology called blockchain technology. Unlike a traditional information network, which stores data in a centralized location, blockchain networks are decentralized and store data across many different computers called ‘nodes’.
The Bitcoin network is essentially a ledger containing a record of all Bitcoin transactions made since 2009, the network launch. There are thousands of nodes, which anyone can operate anonymously. Nobody owns or controls the Bitcoin network, and updates to the software are accepted by community consensus.
More nodes makes for a more secure network, as to alter the ledger, one would need an incredible amount of processing power, making Bitcoin virtually invulnerable to censorship or attack.
Bitcoin is stored in Bitcoin Wallets. These can be software applications, or physical hardware wallets. In each case, the wallets are cryptographically secured, and to send ‘bitcoins’ or ‘BTC,’ users need to have access to a passphrase called a ‘private key’.
