#CryptoSecurity101 Bitcoin (BTC) is a decentralized digital currency that operates without a central authority or government. Created in 2009 by an unknown person or group using the pseudonym Satoshi Nakamoto, it enables peer-to-peer transactions through a blockchain, a public ledger maintained by a network of computers called nodes. Bitcoin is known for its limited supply—only 21 million coins will ever exist—making it a deflationary asset. It has gained popularity as both a store of value and a speculative investment. Despite market volatility, Bitcoin continues to influence financial innovation and challenge traditional banking systems worldwide.