Sia / Skynet

Red de Almacenamiento Descentralizada

Sia 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.

Fundación
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Detalles

Licencia Permissive (MIT)
Estado de Desarrollo 🟢 Activo
Detalle del Estado de Desarrollo Released (Sia actively maintained by Sia Foundation); Skynet Labs: Defunct
Propietario Sia Foundation (nonprofit, Luke Champine) — core Sia protocol; Skynet Labs (David Vorick) — defunct since Nov 2022
Órgano de Gobierno Sia Foundation (non-profit — core Sia protocol); Skynet Labs defunct since November 2022
País USA
Año de Inicio 2013
Stack Golang
Financiamiento VC + personal investment (no ICO; ~$750K seed 2014; <$10M total raised by Nebulous; Sia Foundation funded via blockchain subsidy)
Última Investigación 9 mar 2026

Dominios de Caso de Uso

Evolución de Plataformas y Soberanía

Capacidades

Autoalojable Almacenamiento local-first Portabilidad de datos

Red de Almacenamiento Descentralizada Atributos

Orígenes Decentralized cloud storage / backup
Base de Datos Proof-of-Work blockchain (Siacoin); erasure-coded file shards on hosts
Lenguaje de Consulta REST API (renterd/hostd APIs); Skynet SDK (JS, Go)
Formatos de Datos Any binary; Skylinks (46-char encoded metadata for Skynet content)
Soporte Móvil N/A (infrastructure; wallet apps exist)
Soporte Web Yes (web portals for Skynet; renterd has web dashboard)
Aplicaciones Nativas Native apps (Sia Desktop app; renterd/hostd with web dashboard)
Términos Self-hosting (run host or renter node); pay-per-contract (Siacoin)
Fondos <$10M raised by Nebulous Inc. through 2020; Sia Foundation funded by block reward subsidy (~30,000 SC/block) introduced via hard fork Feb 2021
Basado En Novel (original PoW blockchain with smart storage contracts)
Arquitectura P2P Public blockchain (PoW; host-renter contracts via blockchain; Skynet adds portal layer)
Red de Superposición Global
Direccionamiento por Contenido Yes (file shards addressed by Merkle hash; Skylinks encode content-addressed metadata)
Local-First N/A (cloud storage model)
Cifrado de Extremo a Extremo (E2EE) Yes (client-side encryption of uploaded files before storage on hosts)
Tolerancia a Fallos Bizantinos Partial (PoW blockchain is BFT; individual host honesty enforced by cryptographic storage contracts and collateral slashing)
Firma Ed25519
Permisos Cryptographic Capabilities (storage contracts with host collateral; Skynet registry uses public key access control)
Compatibilidad con la Web Semántica N/A
Contrato Inteligente Yes (storage contracts are on-chain smart contracts in Siacoin blockchain)
Posición en la Pila del Protocolo Application-layer (built on TCP/IP)
Incorporación de Activos/Valor Native (Siacoin SC embedded at blockchain level; storage contracts settle in SC)
Madurez del Protocolo / Estandarización De Facto Standard (established since 2015; community standard for decentralized storage; no formal standards body)
Política de Actualización Mutable (versioned) for Sia files (hosts can update via new contracts); Skynet Registry supports mutable entries; immutable content-addressed files via Skylinks
Mecanismo de Prueba de Almacenamiento Merkle audit proof (hosts must submit cryptographic storage proofs on-chain at contract end; failure results in collateral burn and missed payment)
Modelo Económico / de Incentivos Token rewards (native token SC): renters lock SC in contracts; hosts earn SC for proven storage; both parties lose collateral for breach
Garantía de Recuperación Best-effort (incentivized via cryptographic contracts and collateral; retrieval availability depends on host uptime and contract renewal)