Ethereum differs from Bitcoin in some ways:
1. In Ethereum the block time is set to 14 to 15 seconds compared to Bitcoins 10 minutes.
2. Ethereum has a slightly different economic model than Bitcoin Bitcoin block rewards halve every 4 years whilst Ethereum releases the same amount of Ether each year ad infinitum.
3. Ethereum was crowd funded whilst Bitcoin was released and early miners own most of the coins that will ever be mined. With Ethereum 50% of the coins will be owned by miners in year five.
4. Ethereum uses a memory hard hashing algorithm called Ethash that mitigates against the use of ASICS and encourages decentralised mining by individuals using their GPUs.
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Ethereum is another cryptocurrency, and one many people see as potentially overtaking Bitcoin as the dominant coin in the market. ... The difference between Ethereum and Bitcoin is the fact that Bitcoin is nothing more than a currency, whereas Ethereum is a ledger technology that companies are using to build new programs.