Bitcoin is a decentralized digital currency that operates on a network of the same name. It was introduced in 2008 by an anonymous individual or group known as Satoshi Nakamoto. Bitcoin uses blockchain technology to record transactions and maintain a public ledger of all transactions. Mining is the process by which new bitcoins are created and transactions are verified. Bitcoin wallets store bitcoins and can be used to send, receive, and exchange bitcoins. Bitcoin's security is based on the Proof-of-Workconsensus mechanism, which requires a majority of the network's computing power to alter the blockchain.