Bitcoin Gradient Tee Tシャツ

Bitcoin (BTC) is the first decentralized digital currency, a form of peer-to-peer electronic cash that operates without banks or central authorities, using cryptography and a public ledger (blockchain) to secure transactions, allowing users to send value globally. Created by the pseudonymous Satoshi Nakamoto in 2008, its supply is capped at 21 million, making it scarce, and it's verified by a global network of computers through a process called mining, securing the system and rewarding participants.