BTC, or Bitcoin, is the world's first cryptocurrency launched in 2009 by a person or group under the pseudonym Satoshi Nakamoto. This currency relies on blockchain technology, which is a distributed and secure digital ledger that documents all transactions in a transparent but anonymous manner.

Main features:

1. Decentralization: Bitcoin is not controlled by any government or central institution. Its network is operated by thousands of computers called "miners".

2. Maximum issuance: There are only 21 million Bitcoin units, and the number cannot be increased, which creates scarcity and increases its value in the long term.

3. Privacy: Transactions are documented with encrypted addresses without the need for real identity.

4. Mining: The process by which Bitcoin is created and transactions are verified. It relies on difficult mathematical algorithms that consume a lot of energy.

Uses:

A means of electronic payment without an intermediary.

Store of value (like digital gold).

Investment and speculation in financial markets.

Advantages:

Low transaction fees compared to banks.

Fast in transferring money across borders.

Resistance to fraud or hacking thanks to blockchain.