$BTC Bitcoin (BTC) is a decentralized digital currency, often symbolized with the sign "₿". Emojis commonly associated with Bitcoin include:

₿: Represents Bitcoin itself.

⚡: Symbolizes the Lightning Network, a system designed to facilitate faster Bitcoin transactions.

🍕: Refers to "Bitcoin Pizza Day," commemorating the first real-world Bitcoin transaction in which 10,000 BTC was exchanged for two pizzas.

🔑: Indicates the "Key Proof" movement, emphasizing the importance of individuals holding their own private keys.