The Cortex blockchain facilitates decentralised economy for AI and machine-learning this gives independent researches access to create machine learning models in return for Cortex tokens. The users that want access to these AI models will in turn pay to use CVM (Cortex Virtual Machine). This synchronises the blockchain and responds with the AI model requested. Due to the design of the Cortex smart contracts they are already capable of interaction with external contracts. What is fundamentally different however is that all nodes are used to agree on an outcome for an inferred request, utilising the Cortex Inference Consensus Criteria. This has a cost similar to GAS on Ethereum but uses Endorphin on the Cortex network.