Blockchain uses cryptography to provide a secure method to store long-running records of data. It saw great success in its primary application, cryptocurrency, by solving the dreaded Double Spending Problem in traditional online transaction systems. Its other key features include decentralised storage, which makes the stored history of transactions immutable, down to the first record. Research is ongoing on Blockchain's applications, and we hope to be part of its continued development. All the key advantages of Blockchain technologies have been integrated into DocuChain, and other applications as pertinent.