Abstract: A decentralized hybrid system for collecting, storing, and managing sensitive data, such as medical record data. Data is stored as multiple atomic records in a centralized database. A non-fungible token (NFT) is associated with each data record and assigned to a cryptographic wallet of a party owning the data in the data record on a blockchain ledger. A user key based on the wallet is stored in a centralized user database to identify the data owner to the system. Ownership tokens are granted for each data record and distributed to parties have an ownership interest in proceeds from the sale of data. When data is purchased, the proceeds are distributed, pro rata, based on the ownership tokens.