HyperVault is a flexible, secure access-control system for confidential documents. In 2018 alone, data breaches compromised over 5 billion records, revealing a lack of effective solutions for securely managing sensitive data on a corporate scale – executives often share confidential documents by email, placing immense trust in system administrators and cloud providers. Powered by distributed ledger technology (DLT), HyperVault offers complete security and auditability, including an immutable record of all activity associated with a file. Additionally, HyperVault allows for granular control of permissions and smart sharing features which do not exist on current platforms – including scheduled access, location-based access restrictions.