what is BTC? BTC is an abbreviation for Bitcoin, which is a digital or virtual currency that uses cryptography for security. It was created in 2009 by an unknown person or group using the pseudonym Satoshi Nakamoto. Bitcoin is decentralized, meaning it is not controlled by any government or financial institution. Bitcoin transactions are verified by a network of computers around the world, and recorded on a public ledger called the blockchain. This means that transactions are transparent and ...