Bitcoin is the first and most prominent digital currency in the realm of cryptocurrencies. The currency was first circulated and utilized in 2009 and since then has seen a significant appreciation in value. Bitcoin first traded at $0.0009 reaching a pinnacle of over $60,000 in 2021 and currently trades at $22,000 in the first quarter of 2023. 

Notably, Bitcoin is credited with introducing the concept of blockchain technology and it is presently one of the most widely traded cryptocurrencies in the crypto environment.