Abstract: A system and method of blockchain-based data management of multi-source, multi-format data objects. The method including obtaining a plurality of data objects from a plurality of sources in a plurality of formats. The method including storing the plurality of data objects on one or more blockchains in a blockchain format. The method including generating, by a processing device using natural language processing (NLP), one or more keywords for each data object of the plurality of data objects. The method including respectively linking each of a plurality of metadata tags to a single data object of the plurality of data objects on the one or more blockchains, each metadata tag comprising the one or more keywords for the single data object.