What is Ethereum?
Ethereum is a smart contract platform that aims to be the “World’s Computer.”
Ethereum can be used to codify, decentralize, secure, and trade just about anything, from houses to collectibles.
At the core of Ethereum is the ability to write immutable, transparent smart contracts that can work autonomously.
The most common way to interface with Ethereum is through decentralized apps (dapps). These are like any other apps but an Ethereum wallet is all that’s needed for use.
than paper contracts
To change or hack Ethereum is almost impossible since you would need to compromise more than 50% of the computers in the system, which is millions at a time.