Ethereum is a decentralized platform that facilitates the creation of smart contracts and decentralized applications (DApps). Unlike Bitcoin, which is primarily a currency, Ethereum allows developers to build and deploy their applications on its blockchainA blockchain is a decentralized and distributed digital ledger used to record transactions across multiple computers in a way that ensures the data can only be modified once it has been recorded. Once a block of data is recorded on the blockchain, it becomes extremely difficult to change it without altering all subsequent blocks, which requires consensus from the majority... More. The platform uses “gas” as a unit to measure the computational effort required to execute operations.