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Origins: Bitcoin was created by developer Satoshi Nakamoto in 2008.
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Purpose: Bitcoin provides a viable decentralized alternative to the current mainstream financial infrastructure.
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Method: Bitcoin enables spending with full transparency through a publicly available ledger known as the blockchain.
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Security: A bitcoin transaction involves both a public key, which is generally known to everyone, and a private key known only to the bitcoin user. No coins can be spent without knowing the private key.
