EXACHAIN is a decentralized Proof of Artificial Intelligence (PoAI) algorithm-based blockchain with its own ecosystem. It utilizes the Exa_Tech network, a high-performance blockchain platform capable of handling large per second transactions with low gas fees. The primary purpose of the EXACHAIN blockchain is to provide a secure, transparent, and immutable record of pathology data accessible by medical researchers and doctors worldwide. Smart contracts automate processes, validate and authenticate data, and incentivize participation through a token-based system. The combination of the POAI blockchain and Exa_Tech network allows for efficient handling of large volumes of pathology data and cost-effective services. This powerful platform facilitates collaboration, information sharing, and the development of new treatments and therapies in the field of pathology. The working system chart outlines the stages of data collection, validation, storage, analysis, collaboration, token-based incentive system, low gas fees, and the creation of an immutable audit trail. Overall, the EXACHAIN blockchain is set to revolutionize pathology and contribute to advancements in medical research and treatment.