A system is provided for optimizing the distribution of media production resources. The system includes a grain store having a persistent file system that stores essence grains upon receipt into individual files according to a folder layout. The system also includes a grain store manager that dynamically names the individual files upon receipt of the essence grains to configure the folder layout to form a natural index that maps bytes of the essence grains to a numerical index of the essence grains, respectively, generates a descriptor for flows of files in the folder layout, generates a unique identity for a plurality of sources in the grain store, and receives a media access request from a client device application based on a media production workflow. The grain store then dynamically accesses the essence grains by identifying the unique identity of the respective group of flows and the descriptor for the format.