Cortex is a decentralised artificial intelligence (AI) platform based on blockchain technology, designed to integrate AI into smart contracts. Originating in 2018 through an initial coin offering (ICO), Cortex aims to facilitate the execution of AI models on the blockchain. It provides users with the Cortex Virtual Machine (CVM), which is an enhanced version of the Ethereum Virtual Machine tailored to incorporate AI functionalities. This allows developers to integrate advanced machine learning algorithms within smart contracts, enabling more sophisticated, data-driven decisions in decentralised applications (dApps). The native cryptocurrency, CTXC, powers the platform, incentivising miners to verify AI computations and providing the necessary computational resources for executing AI models.