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Ethereum is a network of computers with no central trusted authority.
They achieve consensus by running computation-intensive algorithm, knownas proof-of-work. The agreed state is added to an append only ledger,known as blockchain. Yes, Ethereum is yet another blockchain. And it’sused to track transactions in a cryptocurrency, known as Ether. However,unlike Bitcoin, it’s much more than a simple log. Bitcoin accountssimply hold currency. Ethereum accounts can run programs as well.Ethereum network is actually one, huge computer!