$BTC
**BTC vs ETH: Key Differences**
Bitcoin (BTC) and Ethereum (ETH) are the two largest cryptocurrencies, but they serve different purposes. BTC, the first cryptocurrency, is primarily a **store of value** and digital gold, with a fixed supply of 21 million coins. ETH, meanwhile, is a **blockchain platform** enabling smart contracts, decentralized apps (dApps), and NFTs.
While Bitcoin focuses on security and scarcity, Ethereum emphasizes **programmability** and innovation, transitioning to a more scalable **proof-of-stake (PoS)** model. BTC is seen as a hedge against inflation, while ETH powers the decentralized web. Both dominate the crypto market, but their use cases make them fundamentally different.
