What is Ethereum ? What you'll learn: 1) The origins of Ethereum2) Ethereum's unique characteristics & ecosystem3) Ethereum's limitations4) The proposed transition to Proof of Stake Ethereum is a blockchain-based system where anyone can build and securely deploy any digital service without going through a formal, centralised approval process - such as getting an App added to Apple's App Store. It is the brainchild of Vitalik Buterin, a Russian born computer programmer, who was an early Bitcoin advocate, but thought it lacked a scripting language to enable connected applications. Ethereum has been dubbed the ‘world computer’ as it enables permissionless