$BTC BTC stands for Bitcoin, which is the world's first and most well-known decentralized cryptocurrency. Here's a breakdown of what that means:

* Decentralized: Unlike traditional currencies issued by central banks (like the US Dollar or Euro), Bitcoin operates on a peer-to-peer network without any central authority controlling it.

* Cryptocurrency: It's a digital asset that uses cryptography to secure transactions and control the creation of new units. This makes it difficult to counterfeit and provides a level of security.

* Blockchain Technology: Bitcoin transactions are recorded on a public, distributed ledger called a blockchain. This blockchain is maintained by a network of computers (nodes) and is transparent and immutable (cannot be altered).