Foundations of Blockchain

Basic smart contract

Ethereum makes use of a domain-specific language called as Solidity to code the logic of the smart contract. Solidity is a high-level programming language that can be compiled to produce bytecode, which is then executed on the EVM.

Solidity is a statically typed programming language initially proposed by Gavin Wood. It was designed to be similar to ECMAScript syntax so that it can be easily adapted by the web developer community. More details about the Solidity programming language can be found at https://solidity.readthedocs.io.

We'll create a simple hello world smart contract using the Solidity programming language:

pragma solidity ^0.4.23; contract Hello { function greetUser(bytes user) view public returns (bytes) ...