A smart contract is a computer programming code that is executed and runs on a blockchain. While usually called self-executing code agreements, smart contracts need input to automatically create an output. Usually, the output is triggered according to a set of terms that have to be met.

Function X, commonly referred to as f(x), is a multi-layered decentralized finance (DeFi) ecosystem that was developed in 2019 by Pundi X Labs. It describes itself as a universal decentralized internet that is powered by blockchain technology and smart devices. Function X wants to mirror traditional finance products on the Function X network. It allows developers to easily create customized blockchains using their subnet solution, thereby automatically inheriting Function X’s speed and security.