Ethereum is a cryptocurrency, which is similar to Bitcoin and based on blockchain in terms of the record of data on money transactions.
Ethereum is often considered to be a competitor of Bitcoin, but this is not strictly the case. The technology it uses offers traders a unique opportunity. It allows you to register any trades, with any assets, on the basis of a distributed database of contracts of a blockchain type avoiding traditional legal procedures. It applies a so-called technology of "smart contracts".
Ethereum price dynamics are based on the trust shown to it and are exclusively formed by a balance of supply and demand on stock exchanges. There is no central body that can influence its price or require others to accept payments in this crypto currency. That is why the factual value of the currency depends on the emission of the amount of goods and services that could be acquired for it.