"Storj aims to ""build a cloud storage infrastructure"" on the ethereum blockchain through end-to-end encryption and multiple service providers. Each file uploaded to the Storj system is encrypted and split into multiple parts, which are then stored by multiple storage service providers. These storage service providers or node operators are rewarded for contributing to the overall network capacity by providing unused storage space and bandwidth to the network. STORJ tokens are ERC-20 tokens used to pay for storage services on the Storj network."