An altcoin is a cryptocurrency that is not bitcoin. Many altcoins are forks of the bitcoin codebase, but others are created from scratch. Some popular altcoins include Litecoin, Ethereum, and Zcash. One benefit of using altcoins is that they can provide new features that are not available on bitcoin. For example, Ethereum allows smart contracts to be executed on its network, while Litecoin has faster transaction confirmation times than bitcoin.

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