#BTCvsETH Bitcoin (BTC) and Ethereum (ETH) are the two largest cryptocurrencies but serve different purposes. Bitcoin, launched in 2009, is primarily a decentralized digital currency and store of value, often referred to as "digital gold." It has a capped supply of 21 million coins. Ethereum, introduced in 2015, is a smart contract platform that enables decentralized applications (dApps) and innovations like DeFi and NFTs. While Bitcoin focuses on security and simplicity, Ethereum emphasizes flexibility and programmability. Ethereum recently transitioned to Proof of Stake, enhancing energy efficiency, whereas Bitcoin still uses Proof of Work. Both remain vital pillars of the crypto ecosystem.