#BitwiseBitcoinETF Cryptocurrency is a digital form of currency that uses cryptography for secure transactions, typically operating on decentralized blockchain technology. Bitcoin, created in 2009, was the first cryptocurrency, and many others, like Ethereum and Ripple, have since emerged. Cryptocurrencies are popular for their investment potential but are highly volatile and carry risks. Beyond finance, blockchain technology is being explored in various industries for its security and transparency. However, regulatory uncertainty and environmental concerns remain challenges for the future of crypto.