It's not too strange if you already know Etherum (ETH).

Like Bitcoin, Ethereum is a decentralized public blockchain network. While there are some important technical differences between the two, the most important difference to note is that Bitcoin and Ethereum differ significantly in purpose and capability. Bitcoin offers a specific application of blockchain technology, a peer-to-peer electronic cash system that allows online payment using bitcoin. While the bitcoin block is used to track ownership of digital currencies (bitcoin), the Ethereum blockchain is focused on running the programming code of any decentralized application.

“Bitcoin is the first and foremost currency; This is a specific application of a blockchain. However, it is far from the only apps. To take a past example of a similar situation, e-mail is a specific use of the Internet, and certainly helped popular e-mail, but there are many other good things as well. ”Dr. Gavin Wood, Co-Founder of Ethereum

In the Ethereum blockchain, instead of mining bitcoin, miners work to earn Ether, a type of encryption that fuels the network. In addition to a cryptocurrency transaction, Ether is also used by application developers to pay for transaction fees and services on the Ethereum network.

There is a second type of token used to pay miners to include transactions in their block, it is called gas, and every smart contract requires a certain amount of gas to be sent. with it to attract miners to bring it to the blockchain.