$BTC Bitcoin (BTC) is the first decentralized digital currency in the world, created in 2009 by an unknown person using the pseudonym Satoshi Nakamoto. Bitcoin relies on blockchain technology, which is a digital ledger of transactions distributed across a network of computers.

Bitcoin features several characteristics that make it unique, including:

* Decentralization: Bitcoin is not controlled by any government or financial institution.

* Transparency: All Bitcoin transactions are recorded on the blockchain, which is accessible to everyone.

* Scarcity: The maximum supply of Bitcoin is 21 million coins, making it a scarce currency.

Bitcoin is used as a means of payment and financial transfers, and it is also used as a store of value. Bitcoin has seen significant growth in its value since its inception, making it one of the most valuable digital currencies in the world.