While both the Bitcoin and Ethereum networks are powered by the principle of distributed ledgers and cryptography, the two differ technically in many ways. For example, transactions on the Ethereum network may contain executable code, while data affixed to Bitcoin network transactions are generally only for keeping notes. Other differences include block time (an ether transaction is confirmed in seconds compared to minutes for bitcoin) and the algorithms that they run on (Ethereum uses ethash while Bitcoin uses SHA-256).
The potential applications of Ethereum are wide-ranging and are powered by its native cryptographic token, ether (commonly abbreviated as ETH). In 2014, Ethereum launched a presale for ether, which received an overwhelming response. Ether is like the fuel for running commands on the Ethereum platform and is used by developers to build and run applications on the platform.
More importantly, though, the Bitcoin and Ethereum networks are different with respect to their overall aims. While bitcoin was created as an alternative to national currencies and thus aspires to be a medium of exchange and a store of value, Ethereum was intended as a platform to facilitate immutable, programmatic contracts, and applications via its own currency.
You earn free Ethereum by spinning a wheel of fortune wheel. The number of spins that you can have is determined by the “energy” that you have in reserve. Energy regenerates itself slowly, or you can watch videos to top up your energy faster. You need to accumulate 10,000 Gwei before you can withdraw your winnings. But, that doesn’t take as long to do as you have thought.