Bitcoin (BTC) is the first cryptocurrency, created to serve as a form of decentralized digital money, functioning as "digital gold". Meanwhile, Ethereum (ETH) is not only a cryptocurrency but also a smart contract platform that enables the development of decentralized applications (dApps). BTC has a limited supply (21 million coins), while ETH has no limit but has a fee-burning mechanism (EIP-1559). The transaction speed of Ethereum is faster, and the network is more flexible, but Bitcoin still maintains the strongest role as a store of value.

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