Introduction
SecureSphere is a decentralized, privacy-first security suite built entirely on the Sia network. Our previous grant funded the successful MVP, which included:
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A mobile app with vault encryption and password management
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A browser extension with stealer-resistant security features
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A breach monitoring tool
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Seedphrase-based authentication
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All built using decentralized storage via Sia and fully open-source.
We shared the MVP with a selected group of enterprise users including universities who expressed strong interest in adopting SecureSphere for internal use. One key request was secure file sharing, which we are now prioritizing in this proposal.
With this expansion, SecureSphere becomes a cross-platform, Sia-native ecosystem, including:
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File storage and sharing via SIA
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Self-hosting tools with auto-deploy
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NFC cold wallet for seedphrase storage
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Desktop client apps (macOS & Windows)
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TOTP & QR sync
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Flutter Plugin for developer integration
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Enhanced browser extension with stealer log detection
Our ecosystem will remain fully open-source and designed to empower users and developers to take back control of their data.
Who Benefits from This Project?
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End-users who want a secure alternative to centralized password/file managers
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Developers building mobile apps via the Flutter SDK
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Privacy advocates demanding data sovereignty
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The Sia ecosystem gains through new Flutter integrations, and user adoption
How does the projected outcome serve the Foundation’s mission of user-owned data?
SecureSphere promotes user-owned data by enabling users to store and manage sensitive information passwords, 2FA codes, seedphrases and files directly on Sia. There’s no centralized control, no data harvesting, and no reliance on external cloud storage.
The planned Flutter plugin will lower the barrier to entry for mobile developers, expanding Sia’s reach into real-world apps and decentralized tooling.
MVP Impact & Adoption Forecast
Our MVP is already being evaluated by several enterprise and academic organizations. Based on current interest, we estimate:
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800 active users by year-end 2025
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Each user consuming ~25 GB of Sia storage on average
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Total network usage:
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20 TB+ storage
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~40 TB bandwidth (based on 1:1 upload/download ratio)
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This helps grow real Sia network usage, supporting decentralized economics and reinforcing the mission of open infrastructure.
Timeline & Milestones
Milestone 1: Flutter Plugin
- File Sharing Plugin to integrate SIA renterd (upload/download, encryption)
- pub.dev release with documentation
Milestone 2: File Vaults in Mobile App
- Upload UI
- Encrypted File manager
- Beta release on Play Store
Milestone 3: Docs & Landing Page
- Developer & user docs
- SecureSphere landing page
- Onboarding tutorials
- Beta release on App Store
Milestone 4: NFC Cold Wallet
- NFC seedphrase storage function
- Flash-your-own guide + open-source firmware
- Mobile app support for read and write NFC card or tag
- Can store Securesphere seedphrase, SIA seedphrase or any others seedphrases
Milestone 5: Self-Hosted Auto Installer + Dashboard
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Docker-based 1-click installer
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Admin dashboard for monitoring uses
Milestone 6: TOTP Integration in Mobile
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In-app 2FA generator
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Sync with seedphrase
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Export/import compatibility
Milestone 7: Desktop App (macOS + Windows)
- SecureSphere desktop client with file vault, TOTP, sync
Milestone 8: Enhanced Browser Extension
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File storage access
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Stealer-info detection module
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QR login to mobile app
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UI & performance improvements
Funding Requested
$51,200 USD over 7 months
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Paid in $7,300 monthly tranches
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Includes $1,500 for infra costs
Risks & Mitigations
Risk | Mitigation |
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Low user adoption | Partner with early enterprise users, offer easy onboarding |
Cross-platform delays | Modular timeline, shared Flutter codebase |
Security vulnerabilities | Peer-reviewed code, open-source audits |
Hosting complexity | Docker installer + auto-config |
Extension limitations | Fallback features for browser store compliance |
Development Information
Are you a resident of any jurisdiction on that list? No
Will your payment bank account be located in any jurisdiction on that list? No
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Open-source? Yes
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Code Access? GitHub + pub.dev (Flutter plugin)
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Monthly Reports? Yes
Acknowledgment
We thank the Sia Foundation for supporting our MVP and this new chapter.
Together, we’re not just building software, we’re building a privacy-first ecosystem and a community that believes in user-owned infrastructure.
Email: [email protected]