Siacoin (SC) aims to provide an open-source low-cost solution for cloud storage, offering encryption and distribution of files chosen for storage by users across a decentralized network of peers. User-controlled private keys give the assertion that no third parties should have access to or control over data stored on the network. As a result, the cloud storage marketplace made available to users of the Sia blockchain is meant to be highly redundant, completely private, and more affordable than many alternatives.