Vitalik Buterin proposed Ethereum in 2013, which is a decentralized, open-source blockchain with smart contract functionality. Ethereum can be used by anyone, all of the programs and services linked with network requires computing power.
The cover the cost of the power, you need to pay a fee every time when you make a transaction on Etthereum. Ether (ETH) is the cryptocurrency of the Ethereum network, it is the second most popular digital token after Bitcoin. ETH is the solution to the issue of payment on Ethereum.
The price jump from around $0.4 (2015) to $2500 (2021).
Reiff, N. (2021, May 7). Bitcoin vs. Ethereum: What's the Difference? Investopedia.