Any cryptocurrency that isn't Bitcoin. The term combines 'alternative' and 'coin.' Ethereum, Solana, and Cardano are all altcoins, though the bigger ones are sometimes called 'majors' while smaller ones are just 'alts.'
The first cryptocurrency, created in 2009 by the pseudonymous Satoshi Nakamoto.
A blockchain platform that enabled smart contracts and decentralized applications.
Digital money secured by cryptography and typically running on a blockchain.
A scam where attackers send tiny transactions from addresses that look similar to ones you've interacted with, hoping you'll accidentally copy the wrong address from your transaction history.
The intersection of artificial intelligence and blockchain technology.
A marketing strategy where crypto projects distribute free tokens to wallet addresses.
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