Filecoin white paper mentions (4.1.1): “Storage Miners participate in Filecoin by offering their disk space and serving Put requests. To become Storage Miners, users must pledge their storage by depositing collateral proportional to it.”
My question is, Is there a model for a rough collateral economy? What is the proportion between the mortgage and the storage space promised by the miners? For example, a commitment to provide 1G of storage space requires a proportion of 5Fil.