Sia is a cloud storage service. It’s the decentralized option to an array of centralized giants such as Apple, Microsoft, Dropbox or Amazon. It enables people to access and host encrypted storage. All transactions are registered within the Sia blockchain and verifiable through its public ledger.
We’re looking at a peer-to-peer ecosystem; there, anybody can rent out spare hard drive space and receive Siacoin in exchange. This can be done safely, through filing contracts and storage proofs. Obviously, renting space on such hard drives will cost users Siacoins.
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