Bitcoin is the first decentralized cryptocurrency originally described in a 2008 whitepaper by a person, or group of people, using the alias Satoshi Nakamoto as a "purely peer-to-peer version of electronic cash" and was implemented early 2009.
Arguably, Bitcoin's narrative has changed over the years from an "electronic cash" system to something more closely resembling "digital gold" due to its digital scarcity, given its limited supply. However, Bitcoin offers many benefits over gold: it is easily divisible, indestructible, immutable, censorship-resistant, more portable, and harder to seize.
Bitcoin's claim to fame is the creation of a global community and it gave birth to an entirely new industry. The emergence of Bitcoin has created a conceptual and technological basis that subsequently inspired the development of thousands of competing projects.
Bitcoin is not only the world's first implementation of a scarce digital cryptocurrency but also one of the most widely traded digital cryptocurrency to date.