Ethereum is an open-source, decentralized blockchain platform that enables the creation of smart contracts and decentralized applications (dApps). It's known for its:

1. *Smart contract functionality*: Automated contracts with specific rules and conditions.

2. *Decentralized applications (dApps)*: Apps built on Ethereum's blockchain.

3. *Ether (ETH)*: Ethereum's native cryptocurrency.

Ethereum's use cases include:

1. DeFi (Decentralized Finance)

2. NFTs (Non-Fungible Tokens)

3. Gaming

4. Supply chain management

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