Simple guide to Ethereum decentralised apps for beginners Blockchain technology has revolutionised finance through Bitcoin (BTC) and altcoins designed to be a mode of payment as well as a store of value replacing modern banking. Its next development was heralded by Ethereum (ETH) introducing smart contracts. It is the blockchain technology for building a network of decentralised applications (dApps). This new creation proposes the concept of web3.0 to replace the current status of the internet (dubbed web2.0) with a more decentralised network.