Sia / Skynet
Decentralized Storage NetworksSia is a decentralized cloud storage network where renters form cryptographic storage contracts with hosts on a Proof-of-Work blockchain, paying in Siacoin (SC). Skynet (now defunct as a hosted service, Sia continues) was a layer-2 content delivery and decentralized web protocol built on top of Sia, enabling file sharing via persistent Skylinks.
Totalmente P2P Fundação Risco de captura baixo
Links
Detalhes
Licença MIT / Permissive
Status de Dev Defunct
Proprietário Sia Foundation (nonprofit, Luke Champine) — core Sia protocol; Skynet Labs (David Vorick) — defunct since Nov 2022
País USA
Ano de Início 2013
Stack Golang
Financiamento VC, ICO, Foundation
Última Investigação 10 de mar. de 2026
Decentralized Storage Network Atributos
P2P Architecture Public blockchain (PoW; host-renter contracts via blockchain; Skynet adds portal layer)
Overlay Network Global
Content Addressing Yes (file shards addressed by Merkle hash; Skylinks encode content-addressed metadata)
Local-First N/A (cloud storage model)
E2EE Yes (client-side encryption of uploaded files before storage on hosts)
Byzantine Fault Tolerance Partial (PoW blockchain is BFT; individual host honesty enforced by cryptographic storage contracts and collateral slashing)
Signature Ed25519
Permissions Cryptographic Capabilities (storage contracts with host collateral; Skynet registry uses public key access control)
Semantic Web Compatability N/A
Smart Contract Yes (storage contracts are on-chain smart contracts in Siacoin blockchain)
Protocol Stack Position Application-layer (built on TCP/IP)
Asset / Value Embedding Native (Siacoin SC embedded at blockchain level; storage contracts settle in SC)
Protocol Maturity / Standardization De Facto Standard (established since 2015; community standard for decentralized storage; no formal standards body)
Update Policy Mutable (versioned) for Sia files (hosts can update via new contracts); Skynet Registry supports mutable entries; immutable content-addressed files via Skylinks
Storage Proof Mechanism Merkle audit proof (hosts must submit cryptographic storage proofs on-chain at contract end; failure results in collateral burn and missed payment)
Economic / Incentive Model Token rewards (native token SC): renters lock SC in contracts; hosts earn SC for proven storage; both parties lose collateral for breach
Retrieval Guarantee Best-effort (incentivized via cryptographic contracts and collateral; retrieval availability depends on host uptime and contract renewal)