#DeepSeekImpact Cryptocurrencies are digital currencies based on blockchain technology, which guarantees secure and transparent transactions. They operate in a decentralized manner, without the intervention of central authorities such as banks. Bitcoin, created in 2009, is the first and best-known cryptocurrency, followed by thousands of others such as Ethereum, Ripple or Binance Coin. They are used for payments, investments or financing innovative projects. However, their volatility, risks of fraud and environmental impact are causing debate. Despite this, cryptocurrencies are revolutionizing the financial system and attracting growing interest around the world.